Alliant Energy
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Alliant Energy Corporation is an American public utility holding company.

Alliant Energy - 10-Q quarterly report FY


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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549

FORM 10-Q

[X]QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES EXCHANGE
 ACT OF 1934
 For the quarterly period ended September 30, 2004
or
[   ]TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES EXCHANGE
 ACT OF 1934
 For the transition period from _______ to _______

CommissionName of Registrant, State of Incorporation,IRS Employer
File Number Address of Principal Executive Offices and Telephone Number Identification Number
1-9894ALLIANT ENERGY CORPORATION39-1380265
 (a Wisconsin corporation) 
 4902 N. Biltmore Lane 
 Madison, Wisconsin 53718 
 Telephone (608)458-3311 
   
0-4117-1INTERSTATE POWER AND LIGHT COMPANY42-0331370
 (an Iowa corporation) 
 Alliant Energy Tower 
 Cedar Rapids, Iowa 52401 
 Telephone (319)786-4411 
   
0-337WISCONSIN POWER AND LIGHT COMPANY39-0714890
 (a Wisconsin corporation) 
 4902 N. Biltmore Lane 
 Madison, Wisconsin 53718 
 Telephone (608)458-3311 

This combined Form 10-Q is separately filed by Alliant Energy Corporation, Interstate Power and Light Company and Wisconsin Power and Light Company. Information contained in the Form 10-Q relating to Interstate Power and Light Company and Wisconsin Power and Light Company is filed by such registrant on its own behalf. Each of Interstate Power and Light Company and Wisconsin Power and Light Company makes no representation as to information relating to registrants other than itself.

Indicate by check mark whether the registrants (1) have filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrants were required to file such reports), and (2) have been subject to such filing requirements for the past 90 days. Yes [ X ] No [  ]

Indicate by check mark whether the registrants are accelerated filers (as defined in Rule 12b-2 of the Exchange Act).
Alliant Energy CorporationYes [X]No [   ]
Interstate Power and Light CompanyYes [   ]No [X]
Wisconsin Power and Light CompanyYes [   ]No [X]

Number of shares outstanding of each class of common stock as of October 29, 2004:
Alliant Energy CorporationCommon stock, $0.01 par value, 115,533,441 shares outstanding
  
Interstate Power and Light CompanyCommon stock, $2.50 par value, 13,370,788 shares outstanding (all of which
 are owned beneficially and of record by Alliant Energy Corporation)
  
Wisconsin Power and Light CompanyCommon stock, $5 par value, 13,236,601 shares outstanding (all of which are
 owned beneficially and of record by Alliant Energy Corporation)

TABLE OF CONTENTS

  Page
Part I.Financial Information2
 Item 1.Condensed Consolidated Financial Statements (Unaudited)2
 Alliant Energy Corporation:
   Condensed Consolidated Statements of Income for the Three and Nine Months Ended Sep. 30, 2004 and 20032
   Condensed Consolidated Balance Sheets as of Sep. 30, 2004 and Dec. 31, 20033
   Condensed Consolidated Statements of Cash Flows for the Nine Months Ended Sep. 30, 2004 and 20035
   Notes to Condensed Consolidated Financial Statements6
 Interstate Power and Light Company:  
   Condensed Consolidated Statements of Income for the Three and Nine Months Ended Sep. 30, 2004 and 200318
   Condensed Consolidated Balance Sheets as of Sep. 30, 2004 and Dec. 31, 200319
   Condensed Consolidated Statements of Cash Flows for the Nine Months Ended Sep. 30, 2004 and 200321
   Notes to Condensed Consolidated Financial Statements22
 Wisconsin Power and Light Company:  
   Condensed Consolidated Statements of Income for the Three and Nine Months Ended Sep. 30, 2004 and 200324
   Condensed Consolidated Balance Sheets as of Sep. 30, 2004 and Dec. 31, 200325
   Condensed Consolidated Statements of Cash Flows for the Nine Months Ended Sep. 30, 2004 and 200327
   Notes to Condensed Consolidated Financial Statements28
 Item 2.Management's Discussion and Analysis of Financial Condition and Results Operations30
 Item 3.Quantitative and Qualitative Disclosures About Market Risk46
 Item 4.Controls and Procedures46
Part II.Other Information47
 Item 6.Exhibits47
 Signatures47

DEFINITIONS

Certain abbreviations or acronyms used in the text and notes of this combined Form 10-Q are defined below:
Abbreviation or Acronym Definition
Alliant EnergyAlliant Energy Corporation
Corporate ServicesAlliant Energy Corporate Services, Inc.
DthDekatherm
EBITDAEarnings Before Interest, Taxes, Depreciation and Amortization
EmeryEmery Generating Facility
EPSEarnings Per Average Common Share
FASBFinancial Accounting Standards Board
FINFASB Interpretation No.
FIN 46Consolidation of Variable Interest Entities
GAAPAccounting Principles Generally Accepted in the U.S.
IPLInterstate Power and Light Company
IUBIowa Utilities Board
KewauneeKewaunee Nuclear Power Plant
McLeodMcLeodUSA Incorporated
MD&AManagement's Discussion and Analysis of Financial Condition and Results of Operations
MPUCMinnesota Public Utilities Commission
MWMegawatt
MWhMegawatt-hour
N/ANot Applicable
PSCWPublic Service Commission of Wisconsin
PUHCAPublic Utility Holding Company Act of 1935
ResourcesAlliant Energy Resources, Inc.
SECSecurities and Exchange Commission
SFASStatement of Financial Accounting Standards
South BeloitSouth Beloit Water, Gas and Electric Company
TBDTo Be Determined
U.S.United States of America
WPLWisconsin Power and Light Company
WPCWhiting Petroleum Corporation

1

PART I. FINANCIAL INFORMATION

ITEM 1. CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

ALLIANT ENERGY CORPORATION
CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED)

  For the Three Months For the Nine Months
  Ended September 30, Ended September 30,
 2004 20032004 2003

  (in thousands, except per share amounts)
Operating revenues:  
  Domestic utility: 
    Electric $583,227   $580,054 $1,519,767   $1,467,187 
    Gas 54,190   62,254 382,007   396,527 
    Other 23,214   28,744 60,320   74,916 
  Non-regulated 70,041   72,593 213,041   207,789 
 
  730,672   743,645 2,175,135   2,146,419 
 

Operating expenses:  
  Domestic utility: 
    Electric production fuel and purchased power 195,143   195,534 565,476   561,859 
    Cost of gas sold 28,989   39,874 262,068   277,943 
    Other operation and maintenance 171,000   183,233 513,057   533,925 
  Non-regulated operation and maintenance 62,915   61,497 186,575   177,617 
  Depreciation and amortization 83,300   78,066 248,385   230,864 
  Taxes other than income taxes 24,081   21,173 76,051   68,014 
 
  565,428   579,377 1,851,612   1,850,222 
 

Operating income  165,244   164,268 323,523   296,197 
 

Interest expense and other:  
  Interest expense 46,048   49,939 133,325   159,443 
  Loss on early extinguishment of debt 2,300   - 7,692   - 
  Equity income from unconsolidated investments (4,625 ) (4,899)(27,054 ) (9,851)
  Allowance for funds used during construction (3,160 ) (5,881)(15,977 ) (14,314)
  Preferred dividend requirements of subsidiaries 4,679   4,087 14,035   12,213 
  Interest income and other (1,863 ) (5,165)(4,517 ) (14,761)
 
  43,379   38,081 107,504   132,730 
 

Income from continuing operations before income taxes  121,865   126,187 216,019   163,467 
 

Income taxes  34,421   41,611 63,502   54,470 
 

Income from continuing operations  87,444   84,576 152,517   108,997 
 

Income (loss) from discontinued operations, net of tax (Note 7)  (5,652 ) 18,656 (49,741 ) 31,894 
 

Income before cumulative effect of changes in accounting principles  81,792   103,232 102,776   140,891 
 

Cumulative effect of changes in accounting principles, net of tax  -   - -   (5,983)
 

Net income  $81,792   $103,232 $102,776   $134,908 
 

Average number of common shares outstanding (basic)  114,246   109,221 112,493   98,214 
 

Earnings per average common share (basic):  
   Income from continuing operations $0.77   $0.78 $1.35   $1.11 
   Income (loss) from discontinued operations (0.05 ) 0.17 (0.44 ) 0.32 
   Cumulative effect of changes in accounting principles -   - -   (0.06)
 
   Net income $0.72   $0.95 $0.91   $1.37 
 

Average number of common shares outstanding (diluted)  114,703   109,433 112,921   98,331 
 

Earnings per average common share (diluted):  
   Income from continuing operations $0.76   $0.77 $1.35   $1.11 
   Income (loss) from discontinued operations (0.05 ) 0.17 (0.44 ) 0.32 
   Cumulative effect of changes in accounting principles -   - -   (0.06)
 
   Net income $0.71   $0.94 $0.91   $1.37 
 

Dividends declared per common share  $0.25   $0.25 $0.75   $0.75 
 

The accompanying Notes to Condensed Consolidated Financial Statements are an integral part of these statements.

2

ALLIANT ENERGY CORPORATION
CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED)

 September 30, December 31,
ASSETS 2004 2003

 (in thousands)
      
Property, plant and equipment:  
  Domestic utility: 
    Electric plant in service $6,328,320   $5,707,478 
    Gas plant in service 670,428   646,439 
    Other plant in service 566,089   538,340 
    Accumulated depreciation (3,164,579 ) (2,985,285)
 
      Net plant 4,400,258   3,906,972 
    Construction work in progress: 
      Emery generating facility 144   304,332 
      Other 153,142   152,684 
    Other, less accumulated depreciation (accum. depr.) of $3,405 and $3,242 68,378   68,611 
 
          Total domestic utility 4,621,922   4,432,599 
 
  Non-regulated and other: 
    Non-regulated Generation, less accum. depr. of $6,016 and $3,380 212,377   204,480 
    International, less accum. depr. of $42,490 and $33,708 194,283   198,875 
    Other Investments, less accum. depr. of $30,008 and $26,179 60,783   53,819 
    Integrated Services, less accum. depr. of $29,040 and $26,570 50,544   51,788 
    Corporate Services and other, less accum. depr. of $38,832 and $25,283 66,395   68,415 
 
          Total non-regulated and other 584,382   577,377 
 
  5,206,304   5,009,976 
 

Current assets:  
  Cash and temporary cash investments 184,065   241,046 
  Restricted cash 6,579   9,816 
  Accounts receivable: 
    Customer, less allowance for doubtful accounts of $4,602 and $4,872 149,776   59,095 
    Unbilled utility revenues 95,526   83,385 
    Other, less allowance for doubtful accounts of $1,610 and $786 61,866   93,802 
  Production fuel, at average cost 62,743   54,148 
  Materials and supplies, at average cost 65,933   60,518 
  Gas stored underground, at average cost 67,367   49,298 
  Regulatory assets 57,350   61,777 
  Assets of discontinued operations (Note 7) 70,739   184,002 
  Other 112,948   82,921 
 
  934,892   979,808 
 

Investments:  
  Investments in unconsolidated foreign entities 511,001   481,525 
  Nuclear decommissioning trust funds 401,224   381,524 
  Investment in ATC and other 275,799   258,767 
 
  1,188,024   1,121,816 
 

Other assets:  
  Regulatory assets 325,974   339,261 
  Deferred charges and other 303,262   324,585 
 
  629,236   663,846 
 

Total assets  $7,958,456   $7,775,446 
 

The accompanying Notes to Condensed Consolidated Financial Statements are an integral part of these statements.

3

ALLIANT ENERGY CORPORATION
CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Continued)

September 30, December 31,
CAPITALIZATION AND LIABILITIES 2004 2003

(in thousands, except share amounts)
Capitalization:      
  Common stock - $0.01 par value - authorized 240,000,000 and 200,000,000 shares; 
    outstanding 115,515,983 and 110,962,910 shares $1,155   $1,110 
  Additional paid-in capital 1,756,117   1,643,572 
  Retained earnings 859,488   840,417 
  Accumulated other comprehensive loss (92,275 ) (106,415)
  Shares in deferred compensation trust - 255,352 and 264,673 shares 
    at an average cost of $27.40 and $27.84 per share (6,997 ) (7,370)
 
       Total common equity 2,517,488   2,371,314 
 
  Cumulative preferred stock of subsidiaries, net 243,803   243,803 
  Long-term debt, net (excluding current portion) 2,237,628   2,123,298 
 
  4,998,919   4,738,415 
 

Current liabilities:  
  Current maturities and sinking funds 97,960   69,281 
  Variable rate demand bonds 39,100   55,100 
  Commercial paper 21,000   107,500 
  Other short-term borrowings 23,322   21,495 
  Accounts payable 240,710   296,229 
  Accrued interest 45,002   43,962 
  Accrued taxes 67,519   68,868 
  Accrued payroll and vacation 37,362   39,597 
  Liabilities of discontinued operations (Note 7) 17,361   50,076 
  Other 136,083   108,332 
 
  725,419   860,440 
 

Other long-term liabilities and deferred credits:  
  Accumulated deferred income taxes 759,236   699,799 
  Accumulated deferred investment tax credits 45,280   49,085 
  Regulatory liabilities 663,767   632,230 
  Asset retirement obligations 363,111   345,680 
  Pension and other benefit obligations 146,292   188,324 
  Other 205,250   209,125 
 
  2,182,936   2,124,243 
 

Minority interest  51,182   52,348 
 

Total capitalization and liabilities  $7,958,456   $7,775,446 
 

The accompanying Notes to Condensed Consolidated Financial Statements are an integral part of these statements.

4

ALLIANT ENERGY CORPORATION
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED)

 For the Nine Months
 Ended September 30,
 2004 2003

  (in thousands)
Cash flows from operating activities:      
  Net income $102,776   $134,908 
  Adjustments to reconcile net income to net cash flows from operating activities:  
    (Income) loss from discontinued operations, net of tax 49,741   (31,894)
    Depreciation and amortization 248,385   230,864 
    Other amortizations 50,692   53,666 
    Deferred tax expense and investment tax credits 55,788   35,821 
    Equity income from unconsolidated investments, net (27,054 ) (9,851)
    Distributions from equity method investments 25,841   16,907 
    Refueling outage provision 4,003   (9,809)
    Cumulative effect of changes in accounting principles, net of tax --   5,983 
    Other (12,801 ) (15,356)
  Other changes in assets and liabilities:  
    Accounts receivable 54,114   (9,425)
    Sale of utility accounts receivable (125,000 ) (161,000)
    Income tax refunds receivable (20,004 ) (27,003)
    Gas stored underground (18,069 ) (24,645)
    Accounts payable (23,705 ) (21,645)
    Accrued taxes (1,349 ) 53,264 
    Adjustment clause balances 14,536   (17,472)
    Pension and other benefit obligations (42,032 ) 16,110 
    Other (21,191 ) (21,417)
 
       Net cash flows from operating activities 314,671   198,006 
 

Cash flows from financing activities:  
    Common stock dividends (83,705 ) (73,699)
    Proceeds from issuance of common stock 109,196   339,189 
    Proceeds from issuance of preferred stock of subsidiary --   38,738 
    Proceeds from issuance of long-term debt 225,168   161,208 
    Reductions in long-term debt (100,897 ) (76,140)
    Net change in commercial paper and other short-term borrowings (84,673 ) (138,784)
    Net change in loans with discontinued operations 30,920   (46,924)
    Other (2,312 ) (14,540)
 
       Net cash flows from financing activities 93,697   189,048 
 

Cash flows used for investing activities:  
    Construction and acquisition expenditures: 
       Domestic utility business (382,260 ) (399,601)
       Non-regulated businesses (52,182 ) (226,176)
       Corporate Services and other (11,548 ) (5,427)
    Nuclear decommissioning trust funds (11,326 ) (10,366)
    Proceeds from asset sales 4,650   256,418 
    Other (12,683 ) 32,761 
 
       Net cash flows used for investing activities (465,349 ) (352,391)
 

Net increase (decrease) in cash and temporary cash investments  (56,981 ) 34,663 
 

Cash and temporary cash investments at beginning of period  241,046   57,747 
 

Cash and temporary cash investments at end of period  $184,065   $92,410 
 

Supplemental cash flows information:  
    Cash paid during the period for: 
       Interest $133,362   $148,700 
 
       Income taxes, net of refunds $16,736   $30,813 
 
    Noncash investing and financing activities: 
       Debt repaid directly by buyer in the sale of Australian business $--   $127,595 
 
       Debt assumed by buyer of affordable housing business $--   $87,986 
 
       Capital lease obligations incurred $13,689   $2,853 
 

The accompanying Notes to Condensed Consolidated Financial Statements are an integral part of these statements.

5

ALLIANT ENERGY CORPORATION
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

1.

The interim condensed consolidated financial statements included herein have been prepared by Alliant Energy, without audit, pursuant to the rules and regulations of the SEC. Accordingly, certain information and footnote disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted, although management believes that the disclosures are adequate to make the information presented not misleading. The condensed consolidated financial statements include Alliant Energy and its consolidated subsidiaries (including IPL, WPL, Resources and Corporate Services). These financial statements should be read in conjunction with the financial statements and the notes thereto included in Alliant Energy’s, IPL’s and WPL’s latest combined Annual Report on Form 10-K.


  In the opinion of management, all adjustments, which are normal and recurring in nature, necessary for a fair presentation of the condensed consolidated results of operations for the three and nine months ended Sep. 30, 2004 and 2003, the condensed consolidated financial position at Sep. 30, 2004 and Dec. 31, 2003, and the condensed consolidated statements of cash flows for the nine months ended Sep. 30, 2004 and 2003 have been made. Because of the seasonal nature of Alliant Energy’s utility operations, results for the three and nine months ended Sep. 30, 2004 are not necessarily indicative of results that may be expected for the year ending Dec. 31, 2004. Certain prior period amounts have been reclassified on a basis consistent with the current period presentation.

2.

Alliant Energy’s comprehensive income, and the components of other comprehensive income (loss), net of taxes, for the three and nine months ended Sep. 30 were as follows (in thousands):


 Three Months Nine Months
 
 2004 20032004 2003
 
          Net income $81,792   $103,232 $102,776   $134,908 
                 Unrealized holding gains on securities, net of tax 3,742   1,891 8,653   5,296 
                 Less: reclassification adjustment for gains 
                   included in net income, net of tax --   417 3   1,420 
 
               Net unrealized gains on securities 3,742   1,474 8,650   3,876 
 
               Foreign currency translation adjustments, net of tax 29,721   (3,669)5,353   65,837 
 
                 Unrealized holding gains (losses) on qualifying       
                   derivatives, net of tax 387   2,822   525 (2,058)
                 Less: reclassification adjustment for gains (losses) 
                   included in net income, net of tax 509   827 388   (8,157)
 
               Net unrealized gains (losses) on qualifying derivatives (122 ) 1,995 137   6,099 
 
            Other comprehensive income (loss) 33,341   (200)14,140   75,812 
 
          Comprehensive income $115,133   $103,032 $116,916   $210,720 
 
3.

Certain financial information relating to Alliant Energy’s business segments is as follows. Gas revenues included $4.2 million and $16.8 million for the three months ended Sep. 30, 2004 and 2003, and $20.1 million and $39.9 million for the nine months ended Sep. 30, 2004 and 2003, respectively, for sales to the electric segment. All other intersegment revenues were not material to Alliant Energy’s operations.


 Domestic Utility BusinessNon-regulated Businesses Alliant
 
 Energy
 ElectricGasOtherTotalInt'l *ISCO **OtherTotalOtherConsolidated
 
 (in thousands)
Three Months Ended Sep. 30, 2004                      
Operating revenues   $583,227   $54,190   $23,214   $660,631   $32,458   $27,168   $11,826   $71,452   ($1,411 ) $730,672  
Operating income (loss)   173,747   (7,331 ) 1,650   168,066   197   (2,138 ) (543 ) (2,484 ) (338 ) 165,244  
Income (loss) from continuing  
  operations               91,141   (6,672 ) (1,679 ) (4,390 ) (12,741 ) 9,044   87,444  
Loss from discontinued  
  operations, net of tax               --   --   (5,652 ) --   (5,652 ) --   (5,652 )
Net income (loss)               91,141   (6,672 ) (7,331 ) (4,390 ) (18,393 ) 9,044   81,792  

6

 Domestic Utility BusinessNon-regulated Businesses Alliant
 
 Energy
 ElectricGasOtherTotalInt'l *ISCO **OtherTotalOtherConsolidated
 
 (in thousands)
Three Months Ended Sep. 30, 2003            
Operating revenues $580,054 $62,254 $28,744 $671,052 $30,635 $31,082 $12,434 $74,151 ($1,558)$743,645 
Operating income (loss) 168,169 (7,393)2,764 163,540 5,232 1,119 (4,893)1,458 (730)164,268 
Income (loss) from continuing 
  operations             83,935 33 541 (3,728)(3,154)3,795 84,576 
Income from discontinued 
  operations, net of tax             -- 6 676 17,974 18,656 -- 18,656 
 Net income             83,935 39 1,217 14,246 15,502 3,795 103,232 
 
Nine Months Ended Sep. 30, 2004  
Operating revenues   $1,519,767   $382,007   $60,320   $1,962,094   $98,384   $83,861   $34,803   $217,048   ($4,007 ) $2,175,135  
Operating income (loss)   304,319   18,553   4,348   327,220   5,273   (3,781 ) (3,632 ) (2,140 ) (1,557 ) 323,523  
Income (loss) from continuing  
  operations               163,432   (6,998 ) (5,570 ) (3,876 ) (16,444 ) 5,529   152,517  
Loss from discontinued  
  operations, net of tax               --   --   (49,741 ) --   (49,741 ) --   (49,741 )
Net income (loss)               163,432   (6,998 ) (55,311 ) (3,876 ) (66,185 ) 5,529   102,776  
 
Nine Months Ended Sep. 30, 2003  
Operating revenues $1,467,187 $396,527 $74,916 $1,938,630 $85,777 $93,047 $33,525 $212,349 ($4,560)$2,146,419 
Operating income (loss) 271,028 21,445 3,015 295,488 10,637 1,111 (10,257)1,491 (782)296,197 
Income (loss) from continuing 
  operations             137,545 (6,305)(222)(11,449)(17,976)(10,572)108,997 
Income (loss) from discontinued 
  operations, net of tax             -- 44,664 2,623 (15,393)31,894 -- 31,894 
Cumulative effect of changes in 
  accounting principles, net of tax             -- -- (2,078)(3,905)(5,983)-- (5,983)
Net income (loss)             137,545 38,359 323 (30,747)7,935 (10,572)134,908 

* Int’l = International ** ISCO = Integrated Services

4.

The provisions for income taxes for earnings from continuing operations are based on the estimated annual effective tax rate, which differs from the federal statutory rate of 35% principally due to state income taxes, the impact of foreign income and associated taxes, tax credits, effects of utility rate making and certain non-deductible expenses.


5.

Alliant Energy utilizes derivative instruments to manage its exposures to various market risks as described in Alliant Energy’s, IPL’s and WPL’s combined Annual Report on Form 10-K for the year ended Dec. 31, 2003. The following information supplements, and should be read in conjunction with, Note 10(a) in Alliant Energy’s “Notes to Consolidated Financial Statements” in the Form 10-K for the year ended Dec. 31, 2003.


  For the nine months ended Sep. 30, 2004, no income or loss was recognized in connection with hedge ineffectiveness in accordance with SFAS 133, “Accounting for Derivative Instruments and Hedging Activities” (SFAS 133). For the three and nine months ended Sep. 30, 2004, Alliant Energy reclassified losses of $1.1 million (includes losses of $1.0 million for discontinued operations) and $1.2 million (includes losses of $1.0 million for discontinued operations), respectively, into earnings as a result of the discontinuance of hedges. Alliant Energy estimates that losses of $0.1 million (all continuing operations) will be reclassified from accumulated other comprehensive loss into earnings within the 12 months between Oct. 1, 2004 and Sep. 30, 2005 as the hedged transactions affect earnings.

6.

A reconciliation of the weighted average common shares outstanding used in the basic and diluted EPS calculation for the three and nine months ended Sep. 30 was as follows:


 Three Months Nine Months
 
 2004 20032004 2003
 
           Weighted average common shares outstanding:         
              Basic EPS calculation 114,246,443   109,220,668 112,492,809   98,214,316 
              Effect of dilutive securities 456,267   211,841 427,961   116,605 
 
              Diluted EPS calculation 114,702,710   109,432,509 112,920,770   98,330,921 
 

7

  The following options to purchase shares of common stock were excluded from the calculation of diluted EPS as the exercise prices were greater than the average market price for the three and nine months ended Sep. 30 as follows:

 Three Months Nine Months
 
 2004 20032004 2003
 
          Options to purchase shares of common stock 3,319,268   3,539,155 3,348,093   3,963,584 
          Average exercise price of options excluded $29.33   $29.48 $29.33   $28.46 

  The effect on net income and EPS for the three and nine months ended Sep. 30 if Alliant Energy had applied the fair value recognition provisions of SFAS 123, “Accounting for Stock-Based Compensation,” to the stock options issued under its two stock-based incentive compensation plans was as follows (dollars in thousands):

 Three Months Nine Months
 
 2004 20032004 2003
 
          Net income, as reported $81,792   $103,232 $102,776   $134,908 
          Less: stock-based compensation expense, net of tax 433   688 1,308   1,838 
 
          Pro forma net income $81,359   $102,544 $101,468   $133,070 
 
          EPS (basic): 
             As reported $0.72   $0.95 $0.91   $1.37 
             Pro forma $0.71   $0.94 $0.90   $1.35 
          EPS (diluted): 
             As reported $0.71   $0.94 $0.91   $1.37 
             Pro forma $0.71   $0.94 $0.90   $1.35 

7.

In July 2004, Alliant Energy announced its intent to divest the following businesses within its Integrated Services business platform:


  o   Cogenex Corporation, an energy services business, based in Lowell, Mass., and affiliated companies;
  o   NG Energy Trading, LLC (NGE), a gas marketing business, based in Oklahoma City, Okla.; and
  o   Energy management services business, which includes offices in Florida, Minnesota and Wisconsin.

  In September 2004, Alliant Energy successfully completed the sale of substantially all of the assets of NGE. Alliant Energy is currently in the process of executing its divestiture plan for the other two businesses. As of Sep. 30, 2004, NGE and Cogenex Corporation qualified as assets held for sale and discontinued operations. Alliant Energy intends to complete the divestiture of its energy management services business within the next twelve months and expects this business will qualify for reporting as assets held for sale and discontinued operations in the fourth quarter of 2004. Alliant Energy applied the provisions of SFAS 144, “Accounting for the Impairment or Disposal of Long-Lived Assets” (SFAS 144), to certain of its assets which were held for sale as of Sep. 30, 2004. SFAS 144 requires that a long-lived asset classified as held for sale be measured at the lower of its carrying amount or fair value, less costs to sell, and to cease depreciation and amortization.

  In addition, Alliant Energy completed the sale of its Australian, affordable housing and SmartEnergy, Inc. businesses in the second, third and third quarters of 2003, respectively. In the fourth quarter of 2003, Alliant Energy completed an initial public offering of WPC, leaving Alliant Energy with an approximate 5% ownership interest in WPC as of Sep. 30, 2004 that is accounted for under the cost method. WPC recently filed a registration statement with the SEC proposing to sell additional new shares of common equity as well as Alliant Energy’s remaining shares.

  The operating results for all of these non-regulated businesses, except the energy management services business, have been separately classified and reported as discontinued operations in Alliant Energy’s Condensed Consolidated Financial Statements. A summary of the components of discontinued operations in Alliant Energy’s Condensed Consolidated Statements of Income for the three and nine months ended Sep. 30 was as follows (in thousands):

8

 Three Months Nine Months
 
 2004 20032004 2003
 
          Operating revenues $25,414   $78,238 $134,096   $362,806 
          Operating expenses (a) 33,960   53,231 184,517   286,320 
          Interest expense and other (pre-tax): 
               Gain on sale of NGE (157 ) -- (157 ) -- 
               Loss (gain) on sale of affordable housing business (b) --   (2,106)--   60,638 
               Loss on sale of SmartEnergy, Inc. (b) --   141 --   13,641 
               SFAS 133 income from Australian business --   -- --   (14,689)
               Gain on sale of Australian business --   -- --   (72,115)
               Other (1,101 ) 2,311 3,183   16,760 
 
          Income (loss) before income taxes (7,288 ) 24,661 (53,447 ) 72,251 
          Income tax expense (benefit) (c) (1,636 ) 6,005 (3,706 ) 40,357 
 
          Income (loss) from discontinued operations, net of tax ($5,652 ) $18,656 ($49,741 ) $31,894 
 

(a)  

In the second quarter of 2004, Alliant Energy recorded a SFAS 142, “Goodwill and Other Intangible Assets,” pre-tax non-cash goodwill impairment charge of $41 million related to its energy services business, primarily due to less favorable market conditions. The fair value of the goodwill was estimated using a combination of the expected discounted future cash flows and market value indicators.

     (b)  

Loss (gain) on sale of affordable housing and SmartEnergy, Inc. businesses includes pre-tax valuation adjustments and selling costs incurred. The valuation adjustments reflect updated estimates of the market value, less selling costs, of assets classified as held for sale for each reporting period and other adjustments and changes in estimates after the sale date.

     (c)  

The provision for income taxes from discontinued operations for the nine months ended Sep. 30, 2004 was significantly different from the federal statutory rate of 35% due to the goodwill impairment charge recorded in the second quarter of 2004. Alliant Energy anticipates a significant portion of the temporary difference resulting from the goodwill impairment charge will more likely than not reverse in the form of a capital loss for tax purposes. Given Alliant Energy’s current capital loss carryforward position and the likelihood regarding its ability to utilize the capital loss related to this goodwill impairment charge before it expires, Alliant Energy recorded a valuation allowance against deferred tax assets of approximately $14 million in the second quarter of 2004 related to this issue.


  A summary of the components of assets and liabilities of discontinued operations on Alliant Energy’s Consolidated Balance Sheets was as follows (in thousands):
 Sep. 30, 2004 Dec. 31, 2003
 
          Assets of discontinued operations:     
             Property, plant and equipment, net $7,188   $8,830 
             Current assets 22,321   87,095 
             Investments 1,725   1,744 
             Deferred charges and other 39,505   86,333 
 
                  Total assets of discontinued operations $70,739   $184,002 
 
          Liabilities of discontinued operations: 
             Current liabilities $9,318   $43,745 
             Other long-term liabilities and deferred credits 8,043   6,331 
 
                 Total liabilities of discontinued operations 17,361   50,076 
 
                      Net assets of discontinued operations $53,378   $133,926 
 

9

  A summary of the components of cash flows for discontinued operations for the nine months ended Sep. 30 was as follows (in thousands):
 2004 2003
 
          Net cash flows from operating activities $35,336   $59,934 
          Net cash flows used for financing activities (33,735 ) (6,878)
          Net cash flows from (used for) investing activities 120   (29,986)
 
          Net increase in cash and temporary cash investments 1,721   23,070 
          Cash and temporary cash investments at beginning of period 1,235   21,155 
 
          Cash and temporary cash investments at end of period $2,956   $44,225 
 
          Supplemental cash flows information: 
            Cash paid (refunded) during the period for: 
               Interest ($28 ) $18,089 
 
               Income taxes, net of refunds ($221 ) ($15,789)
 

8.

In 2004, Alliant Energy adopted revised FIN 46 guidance (FIN 46R). The entities that Alliant Energy consolidated as a result of this guidance did not have a material impact on its financial condition or results of operations. After making an ongoing exhaustive effort, Alliant Energy concluded that it was unable to obtain the information necessary from the counterparties for the Riverside and RockGen power plants, tolling and purchased-power agreements, respectively, to determine whether the counterparties are variable interest entities and if Alliant Energy is the primary beneficiary. These agreements are currently accounted for as operating leases. Costs are included in “Electric production fuel and purchased power” in Alliant Energy’s Condensed Consolidated Statements of Income based on monthly payments for these agreements. Monthly capacity payments related to the Riverside agreement began in June 2004 when the plant was placed in service and are higher during the peak demand period from May 1 through Sep. 30 and lower in all other periods during each calendar year. These seasonal differences in capacity charges are consistent with market pricing and the expected usage of energy from the plant. The counterparties sell some or all of their generating capacity to WPL, and can sell their energy output to both WPL and IPL. WPL and IPL incurred costs (excluding fuel costs) related to the Riverside contract of $24.3 million and $0.4 million for the three months ended Sep. 30, 2004, and $31.5 million and $0.5 million for the nine months ended Sep. 30, 2004, respectively. WPL incurred costs related to the RockGen contract of approximately $4.7 million and $28.0 million for the three and nine months ended Sep. 30, 2004, and $10.1 million and $26.8 million for the three and nine months ended Sep. 30, 2003, respectively. Alliant Energy’s maximum exposure to loss from these contracts is undeterminable due to the inability to obtain the necessary information to complete such evaluation.


9.

Pursuant to SFAS 143, “Accounting for Asset Retirement Obligations” (SFAS 143), a reconciliation of the changes in asset retirement obligations associated with long-lived assets is as follows (in millions):


 IPLWPLTotal
 
          Balance at Jan. 1, 2004 $158 $188 $346 
          Accretion expense 8 9 17 
 
          Balance at Sep. 30, 2004 $166 $197 $363 
 

10.

The components of Alliant Energy’s qualified and non-qualified pension benefits and other postretirement benefits costs for the three and nine months ended Sep. 30 were as follows (in thousands):


 Pension Benefits Other Postretirement Benefits
 
 2004 20032004 2003
 
          Three months ended Sep. 30:          
          Service cost $4,757   $4,036 $2,490   $1,894 
          Interest cost 10,918   10,898 3,459   3,665 
          Expected return on plan assets (11,734 ) (10,153)(1,663 ) (1,339)
          Amortization of: 
             Transition obligation (asset) (80 ) (132)502   918 
             Prior service cost 922   796 (265 ) (76)
             Actuarial loss 1,812   2,181 1,084   665 
 
  $6,595   $7,626 $5,607   $5,727 
 

10

 Pension Benefits Other Postretirement Benefits
 
 2004 20032004 2003
 
          Nine months ended Sep. 30:          
          Service cost $14,538   $12,108 $7,768   $5,682 
          Interest cost 32,790   32,694 10,572   10,995 
          Expected return on plan assets (35,049 ) (30,459)(4,846 ) (4,017)
          Amortization of: 
             Transition obligation (asset) (236 ) (396)1,483   2,754 
             Prior service cost 2,548   2,388 (715 ) (228)
             Actuarial loss 5,714   6,543 3,694   1,995 
 
  $20,305   $22,878 $17,956   $17,181 
 

  Alliant Energy estimates that funding for the pension and other postretirement benefits plans for 2004 will be approximately $65 million and $15 million, of which $65 million and $12 million, respectively, has been contributed through Sep. 30, 2004.

  In the second quarter of 2004, Alliant Energy adopted FASB Staff Position (FSP) No. FAS 106-2, “Accounting and Disclosure Requirements Related to the Medicare Prescription Drug, Improvement and Modernization Act of 2003,” (FSP 106-2). Actuarial equivalence has not yet been formally defined by the U.S. Department of Health and Human Services. However, Alliant Energy believes that a substantial portion of the postretirement medical plans will be actuarially equivalent to the Medicare Prescription Drug Plan. Alliant Energy anticipates continuing its current prescription drug coverage for currently covered retirees and therefore should be eligible for the subsidy available from Medicare. The estimated reductions in Alliant Energy’s 2004 other postretirement benefits costs and accumulated projected benefit obligation are $3 million and $20 million, respectively.

11.

In March 2004, WPL discontinued its participation in Alliant Energy’s combined utility customer accounts receivable sale program. WPL had no receivables sold and no short-term debt outstanding at the time it discontinued its participation in the program. In May 2004, Alliant Energy reduced the maximum amount of receivables that can be sold in the program from $250 million to $175 million, all of which may be sold by IPL. At Sep. 30, 2004 and Dec. 31, 2003, Alliant Energy had sold $51 million (all at IPL) and $176 million ($126 million at IPL and $50 million at WPL) of domestic utility customer accounts receivable, respectively.


12.

WPL has signed a definitive agreement to sell its 41% ownership interest in Kewaunee to a subsidiary of Dominion Resources, Inc. (Dominion). Approval has already been obtained from the Federal Trade Commission, Nuclear Regulatory Commission, IUB, Illinois Commerce Commission and MPUC, and certain approvals have been obtained from the Federal Energy Regulatory Commission (FERC). Alliant Energy expects to receive the PSCW order on this matter in the fourth quarter of 2004.


  WPL anticipates that it will receive approximately $90 million in cash and retain ownership of the trust assets contained in one of the two decommissioning funds it has established to cover the eventual decommissioning of Kewaunee. The fund that will be retained had an after-tax value of $70 million as of Sep. 30, 2004. Dominion will assume responsibility for the eventual decommissioning of Kewaunee and will receive WPL’s qualified decommissioning trust assets which had an after-tax value of $172 million as of Sep. 30, 2004. The cash proceeds, after certain transaction costs, from the sale are expected to slightly exceed WPL’s carrying value of the assets being sold. WPL has requested deferral of any gain and related costs from the PSCW. Because any gain realized and the retained decommissioning fund will likely be returned to customers in future rate filings, WPL does not expect this transaction will have a significant impact on its operating results. As of Sep. 30, 2004, WPL’s share of the carrying value of the assets and liabilities included within the sale agreement was as follows (in millions):

                Assets:   Liabilities:   
                  Investments $172    Asset retirement obligations $197 
                  Property, plant and equipment, net 83    Regulatory liabilities (5)
   
                  Other 16   $192 
 
  
  $271 
 
   

11

  As of Sep. 30, 2004, the assets and liabilities in the previous table do not meet the criteria to be classified as held for sale on the Condensed Consolidated Balance Sheets under the provisions of SFAS 144. At the closing of the sale, WPL will enter into a long-term purchased-power agreement with Dominion to purchase energy and capacity equivalent to the amounts received had current ownership continued. The purchased-power agreement, which also will require regulatory approval, will extend through 2013 when Kewaunee’s current operating license will expire. In April 2004, WPL entered into an exclusivity agreement with Dominion. Under this agreement, if Dominion decides to extend the operating license of Kewaunee, Dominion must negotiate only with WPL and Wisconsin Public Service Corporation (WPSC) for new purchased-power agreements for their respective share of the plant output that would extend beyond Kewaunee’s current operating license termination date. The exclusivity period will start on the closing date of the sale and will extend through Dec. 21, 2011.

Kewaunee is currently down for a scheduled maintenance and refueling outage. The outage is currently anticipated to be two to three weeks longer than the original schedule and is anticipated to be complete in late November. The delays have occurred primarily due to problems with lifting equipment related to the reactor vessel inspection required during this outage and procedures to perform the lift. WPL’s share of the estimated increase in replacement power and operation and maintenance expenses resulting from the delay is approximately $6 million. WPL plans to seek deferral of these additional costs from the PSCW and FERC.


13.

The other (income) and deductions included in “Interest income and other” in Alliant Energy’s Condensed Consolidated Statements of Income for the three and nine months ended Sep. 30 were as follows (in millions):


 Three Months Nine Months
 
 2004 20032004 2003
 
          Interest income:         
             From loans to discontinued operations ($1 .6) ($2.1)($5 .6) ($8.3)
             Other (2 .0) (3.0)(5 .9) (8.4)
          Currency transaction gains, net --   -- (1 .4) (0.1)
          Valuation charges (income): 
             McLeod trading securities 0 .1 0.11 .0 (0.5)
             Other unconsolidated investments 1 .1 0.31 .1 0.3
          Minority interest of subsidiaries' net earnings 0 .5 1.83 .0 3.5
          Other --   (2.3)3 .3 (1.3)
 
  ($1 .9) ($5.2)($4 .5) ($14.8)
 

14.

In May 2004, Emery was placed in service and resulted in an increase in “Domestic utility — Electric plant in service” and a corresponding decrease in “Construction work in progress — Emery generating facility” on Alliant Energy’s Condensed Consolidated Balance Sheet as of Sep. 30, 2004.


15.

Alliant Energy, through its subsidiaries Corporate Services, IPL and WPL, has entered into purchased-power, coal, and natural gas supply, transportation and storage contracts for its domestic utility business. As of Sep. 30, 2004, minimum commitments related to its domestic utility business for 2005 and beyond for purchased-power (excluding operating leases), coal and natural gas were $59.2 million, $315.9 million and $365.5 million, respectively.


16.

Alliant Energy has fully and unconditionally guaranteed the payment of principal and interest on various debt securities issued by Resources and, as a result, is required to present condensed consolidating financial statements. No Alliant Energy subsidiaries are guarantors of Resources’ debt securities. Alliant Energy’s condensed consolidating financial statements are as follows:


12

Alliant Energy Corporation Condensed Consolidating Statements of Income for the Three Months Ended September 30, 2004 and 2003

 Alliant Energy Other Alliant Consolidated
 Parent EnergyConsolidatingAlliant
 CompanyResourcesSubsidiariesAdjustmentsEnergy
 
Three Months Ended September 30, 2004      (in thousands)   
Operating revenues:  
  Domestic utility: 
    Electric $-- $-- $583,227 $-- $583,227 
    Gas -- -- 54,190 -- 54,190 
    Other -- -- 23,214 -- 23,214 
  Non-regulated -- 71,452 76,589 (78,000)70,041 
 
  -- 71,452 737,220 (78,000)730,672 
 
 Operating expenses:  
  Domestic utility: 
    Electric production fuel and purchased power -- -- 195,143 -- 195,143 
    Cost of gas sold -- -- 28,989 -- 28,989 
    Other operation and maintenance -- -- 171,000 -- 171,000 
  Non-regulated operation and maintenance 317 64,007 69,216 (70,625)62,915 
  Depreciation and amortization 17 8,419 79,518 (4,654)83,300 
  Taxes other than income taxes 4 1,510 24,528 (1,961)24,081 
 
  338 73,936 568,394 (77,240)565,428 
 
Operating income (loss)  (338)(2,484)168,826 (760)165,244 
 
Interest expense and other:  
  Interest expense 135 18,961 27,915 (963)46,048 
  Loss on early extinguishment of debt -- 2,300 -- -- 2,300 
  Equity (income) loss from unconsolidated investments -- 2,222 (6,847)-- (4,625)
  Allowance for funds used during construction -- -- (3,255)95 (3,160)
  Preferred dividend requirements of subsidiaries -- -- 4,679 -- 4,679 
  Interest income and other (72,982)(1,083)(695)72,897 (1,863)
 
  (72,847)22,400 21,797 72,029 43,379 
 
Income (loss) from continuing operations before income taxes  72,509 (24,884)147,029 (72,789)121,865 
 
Income tax expense (benefit)  (9,283)(12,143)55,882 (35)34,421 
 
Income (loss) from continuing operations  81,792 (12,741)91,147 (72,754)87,444 
 
Loss from discontinued operations, net of tax  -- (5,652)-- -- (5,652)
 
Net income (loss)  $81,792 ($18,393)$91,147 ($72,754)$81,792 
 
Three Months Ended September 30, 2003  
Operating revenues:  
  Domestic utility: 
    Electric $-- $-- $580,054 $-- $580,054 
    Gas -- -- 62,254 -- 62,254 
    Other -- -- 28,744 -- 28,744 
  Non-regulated -- 74,151 106,599 (108,157)72,593 
 
  -- 74,151 777,651 (108,157)743,645 
 
Operating expenses:  
  Domestic utility: 
    Electric production fuel and purchased power -- -- 195,543 (9)195,534 
    Cost of gas sold -- -- 39,874 -- 39,874 
    Other operation and maintenance -- -- 183,233 -- 183,233 
  Non-regulated operation and maintenance 996 62,337 100,861 (102,697)61,497 
  Depreciation and amortization 10 8,618 73,601 (4,163)78,066 
  Taxes other than income taxes 4 1,738 21,422 (1,991)21,173 
 
  1,010 72,693 614,534 (108,860)579,377 
 
Operating income (loss)  (1,010)1,458 163,117 703 164,268 
 
Interest expense and other:  
  Interest expense 1,693 22,932 26,095 (781)49,939 
  Equity (income) loss from unconsolidated investments -- 356 (6,564)1,309 (4,899)
  Allowance for funds used during construction -- -- (5,898)17 (5,881)
  Preferred dividend requirements of subsidiaries -- -- 4,087 -- 4,087 
  Interest income and other (99,870)(4,902)(315)99,922 (5,165)
 
  (98,177)18,386 17,405 100,467 38,081 
 
Income (loss) from continuing operations before income taxes  97,167 (16,928)145,712 (99,764)126,187 
 
Income tax expense (benefit)  (6,065)(13,774)61,975 (525)41,611 
 
Income (loss) from continuing operations  103,232 (3,154)83,737 (99,239)84,576 
 
Income from discontinued operations, net of tax  -- 18,656 -- -- 18,656 
 
Net income  $103,232 $15,502 $83,737 ($99,239)$103,232 
 

13

Alliant Energy Corporation Condensed Consolidating Statements of Income for the Nine Months Ended September 30, 2004 and 2003

 Alliant Energy Other Alliant Consolidated
 Parent EnergyConsolidatingAlliant
 CompanyResourcesSubsidiariesAdjustmentsEnergy
 
Nine Months Ended September 30, 2004   (in thousands)  
Operating revenues:
  Domestic utility:
    Electric $-- $-- $1,519,767 $-- $1,519,767 
    Gas -- -- 382,007 -- 382,007 
    Other -- -- 60,320 -- 60,320 
  Non-regulated -- 217,048 241,055 (245,062)213,041 
 
  -- 217,048 2,203,149 (245,062)2,175,135 
 
Operating expenses:  
  Domestic utility: 
    Electric production fuel and purchased power -- -- 565,476 -- 565,476 
    Cost of gas sold -- -- 262,068 -- 262,068 
    Other operation and maintenance -- -- 513,057 -- 513,057 
  Non-regulated operation and maintenance 1,506 189,076 219,121 (223,128)186,575 
  Depreciation and amortization 46 24,780 237,071 (13,512)248,385 
  Taxes other than income taxes 7 5,332 76,510 (5,798)76,051 
 
  1,559 219,188 1,873,303 (242,438)1,851,612 
 
Operating income (loss)  (1,559)(2,140)329,846 (2,624)323,523 
 
Interest expense and other:  
  Interest expense 679 57,465 77,996 (2,815)133,325 
  Loss on early extinguishment of debt -- 7,692 -- -- 7,692 
  Equity income from unconsolidated investments -- (9,429)(17,625)-- (27,054)
  Allowance for funds used during construction -- -- (16,204)227 (15,977)
  Preferred dividend requirements of subsidiaries -- -- 14,035 -- 14,035 
  Interest income and other (97,821)(2,297)(1,943)97,544 (4,517)
 
  (97,142)53,431 56,259 94,956 107,504 
 
Income (loss) from continuing operations before income taxes  95,583 (55,571)273,587 (97,580)216,019 
 
Income tax expense (benefit)  (7,193)(39,127)110,167 (345)63,502 
 
Income (loss) from continuing operations  102,776 (16,444)163,420 (97,235)152,517 
 
Loss from discontinued operations, net of tax  -- (49,741)-- -- (49,741)
 
Net income (loss)  $102,776 ($66,185)$163,420 ($97,235)$102,776 
 
Nine Months Ended September 30, 2003  
Operating revenues:  
  Domestic utility: 
    Electric $-- $-- $1,467,187 $-- $1,467,187 
    Gas -- -- 396,527 -- 396,527 
    Other -- -- 74,916 -- 74,916 
  Non-regulated -- 212,349 283,591 (288,151)207,789 
 
  -- 212,349 2,222,221 (288,151)2,146,419 
 
Operating expenses:  
  Domestic utility: 
    Electric production fuel and purchased power -- -- 561,319 540 561,859 
    Cost of gas sold -- -- 277,943 -- 277,943 
    Other operation and maintenance -- -- 533,925 -- 533,925 
  Non-regulated operation and maintenance 2,155 181,430 263,985 (269,953)177,617 
  Depreciation and amortization 28 24,308 218,636 (12,108)230,864 
  Taxes other than income taxes 9 5,120 68,748 (5,863)68,014 
 
  2,192 210,858 1,924,556 (287,384)1,850,222 
 
Operating income (loss)  (2,192)1,491 297,665 (767)296,197 
 
Interest expense and other:  
  Interest expense 8,230 76,657 79,710 (5,154)159,443 
  Equity (income) loss from unconsolidated investments -- 5,368 (15,219)-- (9,851)
  Allowance for funds used during construction -- -- (14,412)98 (14,314)
  Preferred dividend requirements of subsidiaries -- -- 12,213 -- 12,213 
  Interest income and other (148,655)(14,812)(830)149,536 (14,761)
 
  (140,425)67,213 61,462 144,480 132,730 
 
Income (loss) from continuing operations before income taxes  138,233 (65,722)236,203 (145,247)163,467 
 
Income tax expense (benefit)  3,325 (47,746)99,428 (537)54,470 
 
Income (loss) from continuing operations  134,908 (17,976)136,775 (144,710)108,997 
 
Income from discontinued operations, net of tax  -- 31,894 -- -- 31,894 
 
Income before cumulative effect of changes in  
   accounting principles, net of tax  134,908 13,918 136,775 (144,710)140,891 
 
Cumulative effect of changes in accounting principles, net of tax  -- (5,983)-- -- (5,983)
 
Net income  $134,908 $7,935 $136,775 ($144,710)$134,908 
 

14

Alliant Energy Corporation Condensed Consolidating Balance Sheet as of September 30, 2004

 Alliant Energy Other Consolidated
 Parent Alliant EnergyConsolidatingAlliant
ASSETS CompanyResourcesSubsidiariesAdjustmentsEnergy
 
Property, plant and equipment:      (in thousands)     
  Domestic utility: 
      Electric plant in service $-- $-- $6,328,320 $-- $6,328,320 
      Other plant in service -- -- 1,236,517 -- 1,236,517 
      Accumulated depreciation -- -- (3,164,579)-- (3,164,579)
      Construction work in progress: 
         Emery generating facility -- -- 144 -- 144 
         Other -- -- 153,142 -- 153,142 
      Other, net -- -- 68,378 -- 68,378 
 
          Total domestic utility -- -- 4,621,922 -- 4,621,922 
 
  Non-regulated and other, net -- 517,737 66,756 (111)584,382 
 
  -- 517,737 4,688,678 (111)5,206,304 
 
Current assets:         
  Restricted cash -- 3,494 3,085 -- 6,579 
  Accounts receivable, net 305 72,109 327,879 (93,125)307,168 
  Gas stored underground, at average cost -- -- 67,367 -- 67,367 
  Assets of discontinued operations -- 70,739 -- -- 70,739 
  Other 93,350 145,286 294,239 (49,836)483,039 
 
  93,655 291,628 692,570 (142,961)934,892 
 
Investments:         
   Consolidated subsidiaries 2,410,959 -- -- (2,410,959)-- 
   Other 13,077 599,206 575,741 -- 1,188,024 
 
  2,424,036 599,206 575,741 (2,410,959)1,188,024 
 
 
Deferred charges and other  8,165 83,144 567,832 (29,905)629,236 
 
Total assets  $2,525,856 $1,491,715 $6,524,821 ($2,583,936)$7,958,456 
 
CAPITALIZATION AND LIABILITIES  
Capitalization:  
  Common stock and additional paid-in capital $1,757,272 $250,261 $1,374,935 ($1,625,196)$1,757,272 
  Retained earnings 859,488 46,818 831,323 (878,141)859,488 
  Accumulated other comprehensive loss (92,275)(54,961)(37,313)92,274 (92,275)
  Shares in deferred compensation trust (6,997)-- -- -- (6,997)
 
       Total common equity 2,517,488 242,118 2,168,945 (2,411,063)2,517,488 
 
  Cumulative preferred stock of subsidiaries, net -- -- 243,803 -- 243,803 
  Long-term debt, net (excluding current portion) -- 835,510 1,402,118 -- 2,237,628 
 
  2,517,488 1,077,628 3,814,866 (2,411,063)4,998,919 
 
Current liabilities:  
  Current maturities and sinking funds -- 9,960 88,000 -- 97,960 
  Variable rate demand bonds -- -- 39,100 -- 39,100 
  Commercial paper -- -- 21,000 -- 21,000 
  Liabilities of discontinued operations -- 17,361 -- -- 17,361 
  Other 8,092 155,187 529,680 (142,961)549,998 
 
  8,092 182,508 677,780 (142,961)725,419 
 
 
Other long-term liabilities and deferred credits  276 180,397 2,032,175 (29,912)2,182,936 
 
 
Minority interest  -- 51,182 -- -- 51,182 
 
Total capitalization and liabilities  $2,525,856 $1,491,715 $6,524,821 ($2,583,936)$7,958,456 
 

15

Alliant Energy Corporation Condensed Consolidating Balance Sheet as of December 31, 2003

 Alliant Energy Other Consolidated
 Parent Alliant EnergyConsolidatingAlliant
ASSETS CompanyResourcesSubsidiariesAdjustmentsEnergy
 
Property, plant and equipment:      (in thousands)    
  Domestic utility: 
      Electric plant in service $-- $-- $5,707,478 $-- $5,707,478 
      Other plant in service -- -- 1,184,779 -- 1,184,779 
      Accumulated depreciation -- -- (2,985,285)-- (2,985,285)
      Construction work in progress: 
         Emery generating facility -- -- 304,332 -- 304,332 
         Other -- -- 152,684 -- 152,684 
      Other, net -- -- 68,611 -- 68,611 
 
          Total domestic utility -- -- 4,432,599 -- 4,432,599 
 
  Non-regulated and other, net -- 508,769 68,719 (111)577,377 
 
  -- 508,769 4,501,318 (111)5,009,976 
 
Current assets:  
  Restricted cash -- 6,799 3,017 -- 9,816 
  Accounts receivable, net 6,581 67,942 225,783 (64,024)236,282 
  Gas stored underground, at average cost -- -- 49,298 -- 49,298 
  Assets of discontinued operations -- 184,002 -- -- 184,002 
  Other 49,359 171,185 330,822 (50,956)500,410 
 
  55,940 429,928 608,920 (114,980)979,808 
 
Investments:  
  Consolidated subsidiaries 2,324,030 -- 10 (2,324,040)-- 
  Other 12,422 566,221 543,173 -- 1,121,816 
 
  2,336,452 566,221 543,183 (2,324,040)1,121,816 
 
 
Deferred charges and other  4,146 88,282 613,446 (42,028)663,846 
 
Total assets  $2,396,538 $1,593,200 $6,266,867 ($2,481,159)$7,775,446 
 
CAPITALIZATION AND LIABILITIES  
Capitalization:  
  Common stock and additional paid-in capital $1,644,682 $232,743 $1,274,663 ($1,507,406)$1,644,682 
  Retained earnings 840,417 113,004 810,149 (923,153)840,417 
  Accumulated other comprehensive loss (106,415)(69,102)(37,313)106,415 (106,415)
  Shares in deferred compensation trust (7,370)-- -- -- (7,370)
 
       Total common equity 2,371,314 276,645 2,047,499 (2,324,144)2,371,314 
 
  Cumulative preferred stock of subsidiaries, net -- -- 243,803 -- 243,803 
  Long-term debt, net (excluding current portion) -- 874,079 1,249,219 -- 2,123,298 
 
  2,371,314 1,150,724 3,540,521 (2,324,144)4,738,415 
 
Current liabilities:  
  Current maturities and sinking funds -- 7,281 62,000 -- 69,281 
  Variable rate demand bonds -- -- 55,100 -- 55,100 
  Commercial paper -- -- 107,500 -- 107,500 
  Liabilities of discontinued operations -- 50,076 -- -- 50,076 
  Other 22,049 167,042 504,372 (114,980)578,483 
 
  22,049 224,399 728,972 (114,980)860,440 
 
 
Other long-term liabilities and deferred credits  3,175 165,729 1,997,374 (42,035)2,124,243 
 
 
Minority interest  -- 52,348 -- -- 52,348 
 
Total capitalization and liabilities  $2,396,538 $1,593,200 $6,266,867 ($2,481,159)$7,775,446 
 

16

Alliant Energy Corporation Condensed Consolidating Statements of Cash Flows for the Nine Months Ended September 30, 2004 and 2003

 Alliant Energy Other Alliant Consolidated
 Parent EnergyConsolidatingAlliant
 CompanyResourcesSubsidiariesAdjustmentsEnergy
 
Nine Months Ended September 30, 2004     (in thousands)    
 Net cash flows from (used for) operating activities  $102,600 ($48,294)$371,634 ($111,269)$314,671 
 
 Cash flows from financing activities:  
     Common stock dividends (83,705)-- (142,246)142,246 (83,705)
     Proceeds from issuance of common stock 109,196 -- -- -- 109,196 
     Proceeds from issuance of long-term debt -- 168 225,000 -- 225,168 
     Reductions in long-term debt -- (38,897)(62,000)-- (100,897)
     Net change in commercial paper and other short-term borrowings (20,048)22,459 (87,084)-- (84,673)
     Net change in loans with discontinued operations -- 30,920 -- -- 30,920 
     Other 153 17,224 84,066 (103,755)(2,312)
 
        Net cash flows from financing activities 5,596 31,874 17,736 38,491 93,697 
 
 Cash flows used for investing activities:  
     Construction and acquisition expenditures: 
        Domestic utility business -- -- (382,260)-- (382,260)
        Non-regulated businesses -- (52,182)-- -- (52,182)
        Corporate Services -- -- (11,548)-- (11,548)
     Proceeds from asset sales -- 4,240 410 -- 4,650 
     Other (72,348)1,706 (26,145)72,778 (24,009)
 
        Net cash flows used for investing activities (72,348)(46,236)(419,543)72,778 (465,349)
 
 Net increase (decrease) in cash and temporary cash investments  35,848 (62,656)(30,173)-- (56,981)
 
 Cash and temporary cash investments at beginning of period  35,776 143,126 62,144 -- 241,046 
 
 Cash and temporary cash investments at end of period  $71,624 $80,470 $31,971 $-- $184,065 
 
  Supplemental cash flows information:  
     Cash paid (refunded) during the period for: 
        Interest $3,178 $56,308 $73,876 $-- $133,362 
 
        Income taxes, net of refunds ($18,334)$12,886 $22,184 $-- $16,736 
 
     Noncash investing and financing activities: 
        Capital lease obligations incurred $-- $-- $13,689 $-- $13,689 
 
Nine Months Ended September 30, 2003  
 Net cash flows from (used for) operating activities  $132,636 ($52,454)$274,746 ($156,922)$198,006 
 
 Cash flows from (used for) financing activities:  
     Common stock dividends (73,699)-- (111,401)111,401 (73,699)
     Proceeds from issuance of common stock 339,189 -- -- -- 339,189 
     Proceeds from issuance of preferred stock of subsidiary -- -- 38,738 -- 38,738 
     Proceeds from issuance of long-term debt -- 61,208 100,000 -- 161,208 
     Reductions in long-term debt -- (3,460)(72,680)-- (76,140)
     Net change in commercial paper and other short-term borrowings (43,534)(49,968)(45,282)-- (138,784)
     Net change in loans with discontinued operations -- (46,924)-- -- (46,924)
     Other (1,650)1,869 291,574 (306,333)(14,540)
 
        Net cash flows from (used for) financing activities 220,306 (37,275)200,949 (194,932)189,048 
 
 Cash flows from (used for) investing activities:  
     Construction and acquisition expenditures: 
        Domestic utility business -- -- (508,448)108,847 (399,601)
        Non-regulated businesses -- (226,176)-- -- (226,176)
        Corporate Services and other (50)-- (5,377)-- (5,427)
     Proceeds from asset sales -- 364,777 488 (108,847)256,418 
     Other (352,114)(4,843)27,498 351,854 22,395 
 
        Net cash flows from (used for) investing activities (352,164)133,758 (485,839)351,854 (352,391)
 
 Net increase (decrease) in cash and temporary cash investments  778 44,029 (10,144)-- 34,663 
 
 Cash and temporary cash investments at beginning of period  4 42,124 15,619 -- 57,747 
 
 Cash and temporary cash investments at end of period  $782 $86,153 $5,475 $-- $92,410 
 
  Supplemental cash flows information:  
     Cash paid (refunded) during the period for: 
        Interest $7,755 $60,272 $80,673 $-- $148,700 
 
        Income taxes, net of refunds ($5,473)($21,428)$57,714 $-- $30,813 
 
     Noncash investing and financing activities: 
        Debt repaid directly by buyer in the sale of Australian business $-- $127,595 $-- $-- $127,595 
 
        Debt assumed by buyer of affordable housing business $-- $87,986 $-- $-- $87,986 
 
        Capital lease obligations incurred $-- $-- $2,853 $-- $2,853 
 

17

INTERSTATE POWER AND LIGHT COMPANY
CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED)

 For the Three Months For the Nine Months
 Ended September 30, Ended September 30,
 2004 20032004 2003

 (in thousands)
Operating revenues:          
  Electric utility $325,400   $308,141 $807,591   $773,186 
  Gas utility 29,662   28,383 208,047   195,725 
  Steam and other 19,408   15,587 50,220   49,029 
 
  374,470   352,111 1,065,858   1,017,940 
 

Operating expenses:  
  Electric production fuel and purchased power 78,494   83,332 239,079   241,403 
  Cost of gas sold 16,552   17,742 149,786   136,735 
  Other operation and maintenance 105,025   111,468 309,222   310,759 
  Depreciation and amortization 47,843   41,583 142,562   123,000 
  Taxes other than income taxes 13,509   11,623 43,177   39,708 
 
  261,423   265,748 883,826   851,605 
 

Operating income  113,047   86,363 182,032   166,335 
 

Interest expense and other:  
  Interest expense 18,551   16,404 50,367   48,360 
  Allowance for funds used during construction (1,894 ) (4,942)(12,725 ) (11,002)
  Interest income and other (126 ) (155)(993 ) (426)
 
  16,531   11,307 36,649   36,932 
 

Income before income taxes  96,516   75,056 145,383   129,403 
 

Income taxes  34,270   34,068 54,935   55,586 
 

Net income  62,246   40,988 90,448   73,817 
 

Preferred dividend requirements  3,852   3,260 11,552   9,730 
 

Earnings available for common stock  $58,394   $37,728 $78,896   $64,087 
 

The accompanying Notes to Condensed Consolidated Financial Statements are an integral part of these statements.  

18

INTERSTATE POWER AND LIGHT COMPANY
CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED)

 September 30, December 31,
ASSETS 2004 2003

 (in thousands)
Property, plant and equipment:      
  Electric plant in service $4,222,642   $3,705,472 
  Gas plant in service 355,221   345,238 
  Steam plant in service 60,310   60,184 
  Other plant in service 224,076   202,519 
  Accumulated depreciation (1,956,962 ) (1,845,686)
 
    Net plant 2,905,287   2,467,727 
  Construction work in progress: 
     Emery generating facility 144   304,332 
     Other 79,276   85,484 
  Other, less accumulated depreciation of $3,121 and $2,941 50,456   52,894 
 
  3,035,163   2,910,437 
 

Current assets:  
  Cash and temporary cash investments 59   2,062 
  Accounts receivable: 
    Customer, less allowance for doubtful accounts of $1,275 and $1,262 81,725   18,035 
    Associated companies 2,708   2,556 
    Other, less allowance for doubtful accounts of $770 and $145 25,513   51,775 
  Income tax refunds receivable 9,267   34,838 
  Production fuel, at average cost 32,803   28,269 
  Materials and supplies, at average cost 33,058   30,904 
  Gas stored underground, at average cost 34,945   25,021 
  Regulatory assets 30,957   37,552 
  Prepayments and other 17,092   10,619 
 
  268,127   241,631 
 

Investments:  
  Nuclear decommissioning trust funds 159,251   147,859 
  Other 14,047   14,233 
 
  173,298   162,092 
 

Other assets:  
  Regulatory assets 246,248   243,317 
  Deferred charges and other 38,302   41,563 
 
  284,550   284,880 
 

Total assets  $3,761,138   $3,599,040 
 

The accompanying Notes to Condensed Consolidated Financial Statements are an integral part of these statements.


19

INTERSTATE POWER AND LIGHT COMPANY
CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Continued)

 September 30, December 31,
CAPITALIZATION AND LIABILITIES 2004 2003

 (in thousands, except share amounts)
Capitalization:      
  Common stock - $2.50 par value - authorized 24,000,000 shares; 
    13,370,788 shares outstanding $33,427   $33,427 
  Additional paid-in capital 746,264   646,077 
  Retained earnings 375,776   372,421 
  Accumulated other comprehensive loss (17,078 ) (17,078)
 
    Total common equity 1,138,389   1,034,847 
 
  Cumulative preferred stock 183,840   183,840 
  Long-term debt, net 962,903   837,810 
 
  2,285,132   2,056,497 
 

Current liabilities:  
  Commercial paper 21,000   107,500 
  Accounts payable 101,019   124,336 
  Accounts payable to associated companies 34,305   22,492 
  Accrued interest 16,948   15,412 
  Accrued taxes 55,761   58,272 
  Other 58,252   52,929 
 
  287,285   380,941 
 

Other long-term liabilities and deferred credits:  
  Accumulated deferred income taxes 391,857   351,857 
  Accumulated deferred investment tax credits 24,992   27,614 
  Regulatory liabilities 424,752   404,274 
  Asset retirement obligations 165,845   158,322 
  Pension and other benefit obligations 63,872   91,925 
  Other 117,403   127,610 
 
  1,188,721   1,161,602 
 

Total capitalization and liabilities  $3,761,138   $3,599,040 
 

The accompanying Notes to Condensed Consolidated Financial Statements are an integral part of these statements.

20

INTERSTATE POWER AND LIGHT COMPANY
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED)

 For the Nine Months
 Ended September 30,
 2004 2003

 (in thousands)
Cash flows from operating activities:      
  Net income $90,448   $73,817 
  Adjustments to reconcile net income to net cash  
   flows from operating activities:  
     Depreciation and amortization 142,562   123,000 
     Amortization of leased nuclear fuel 10,975   9,374 
     Deferred tax expense and investment tax credits 25,907   19,301 
     Refueling outage provision 4,003   (9,809)
     Other (3,446 ) (1,745)
  Other changes in assets and liabilities:  
     Accounts receivable 37,420   32,604 
     Sale of accounts receivable (75,000 ) (45,000)
     Income tax refunds receivable 25,571   (415)
     Gas stored underground (9,924 ) (13,426)
     Accounts payable (2,705 ) 19,816 
     Adjustment clause balances 14,648   (16,511)
     Pension and other benefit obligations (28,053 ) 8,862 
     Other (15,712 ) 7,428 
 
       Net cash flows from operating activities 216,694   207,296 
 

Cash flows from financing activities:  
     Common stock dividends (75,541 ) (64,632)
     Preferred stock dividends (11,552 ) (9,730)
     Capital contribution from parent 100,000   118,780 
     Proceeds from issuance of preferred stock -   38,738 
     Proceeds from issuance of long-term debt 125,000   100,000 
     Reductions in long-term debt -   (2,680)
     Net change in commercial paper (86,500 ) 4,000 
     Principal payments under capital lease obligations (9,659 ) (9,720)
     Other 16,373   13,996 
 
       Net cash flows from financing activities 58,121   188,752 
 

Cash flows used for investing activities:  
     Utility construction expenditures (239,369 ) (404,968)
     Nuclear decommissioning trust funds (9,169 ) (8,209)
     Other (28,280 ) 11,116 
 
       Net cash flows used for investing activities (276,818 ) (402,061)
 

Net decrease in cash and temporary cash investments  (2,003 ) (6,013)
 

Cash and temporary cash investments at beginning of period  2,062   6,076 
 

Cash and temporary cash investments at end of period  $59   $63 
 

Supplemental cash flows information:  
  Cash paid (refunded) during the period for: 
     Interest $49,907   $50,076 
 
     Income taxes, net of refunds ($4,796 ) $12,264 
 
  Noncash investing and financing activities: 
     Capital lease obligations incurred $13,689   $2,853 
 

The accompanying Notes to Condensed Consolidated Financial Statements are an integral part of these statements.

21

INTERSTATE POWER AND LIGHT COMPANY
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

  Except as modified below, the Alliant Energy Notes to Condensed Consolidated Financial Statements are incorporated by reference insofar as they relate to IPL.

1.

The interim condensed consolidated financial statements included herein have been prepared by IPL, without audit, pursuant to the rules and regulations of the SEC. Accordingly, certain information and footnote disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted, although management believes that the disclosures are adequate to make the information presented not misleading. The condensed consolidated financial statements include IPL and its consolidated subsidiaries. IPL is a direct subsidiary of Alliant Energy. These financial statements should be read in conjunction with the financial statements and the notes thereto included in IPL’s latest Annual Report on Form 10-K.


  In the opinion of management, all adjustments, which are normal and recurring in nature, necessary for a fair presentation of the condensed consolidated results of operations for the three and nine months ended Sep. 30, 2004 and 2003, the condensed consolidated financial position at Sep. 30, 2004 and Dec. 31, 2003, and the condensed consolidated statements of cash flows for the nine months ended Sep. 30, 2004 and 2003 have been made. Because of the seasonal nature of IPL’s operations, results for the three and nine months ended Sep. 30, 2004 are not necessarily indicative of results that may be expected for the year ending Dec. 31, 2004. Certain prior period amounts have been reclassified on a basis consistent with the current period presentation.

2.

For the three and nine months ended Sep. 30, 2004 and 2003, IPL had no other comprehensive income, thus IPL’s comprehensive income was equal to its earnings available for common stock for all periods.


3.

Certain financial information relating to IPL’s significant business segments is as follows. Intersegment revenues were not material to IPL’s operations.

 ElectricGasOtherTotal
 
 (in thousands)
Three Months Ended Sep. 30, 2004      
Operating revenues   $325,400   $29,662   $19,408   $374,470  
Operating income (loss)   115,605   (4,527 ) 1,969   113,047  
Earnings available for common stock               58,394  
 
Three Months Ended Sep. 30, 2003  
Operating revenues $308,141 $28,383 $15,587 $352,111 
Operating income (loss) 89,197 (4,708)1,874 86,363 
Earnings available for common stock             37,728 
 
Nine Months Ended Sep. 30, 2004  
Operating revenues   $807,591   $208,047   $50,220   $1,065,858  
Operating income   172,831   2,783   6,418   182,032  
Earnings available for common stock               78,896  
 
Nine Months Ended Sep. 30, 2003  
Operating revenues   $773,186   $195,725   $49,029   $1,017,940  
Operating income   156,298   7,474   2,563   166,335  
Earnings available for common stock               64,087  

22

10.

The components of IPL’s qualified pension benefits and other postretirement benefits costs for the three and nine months ended Sep. 30 were as follows (in thousands):


 Qualified Pension Benefits Other Postretirement Benefits
 
 2004 20032004 2003
 
Three months ended Sep. 30:          
Service cost $1,519   $1,275 $811   $545 
Interest cost 3,181   3,075 1,820   2,138 
Expected return on plan assets (3,373 ) (2,885)(1,208 ) (980)
Amortization of: 
   Transition obligation (asset) (53 ) (49)215   649 
   Prior service cost 322   331 (226 ) (62)
   Actuarial loss 500   472 659   416 
 
  $2,096   $2,219 $2,071   $2,706 
 
Nine months ended Sep. 30:  
Service cost $4,558   $3,825 $2,547   $1,635 
Interest cost 9,543   9,225 5,603   6,414 
Expected return on plan assets (10,121 ) (8,655)(3,565 ) (2,940)
Amortization of: 
   Transition obligation (asset) (157 ) (147)630   1,947 
   Prior service cost 967   993 (576 ) (186)
   Actuarial loss 1,502   1,416 2,253   1,248 
 
  $6,292   $6,657 $6,892   $8,118 
 

  The pension benefits costs shown in the previous table represent only the pension benefits costs for bargaining unit employees of IPL covered under the bargaining unit pension plans that are sponsored by IPL. The pension benefits costs for IPL’s non-bargaining employees who are participants in other Alliant Energy plans were $0.7 million and $1.1 million for the three months ended Sep. 30, 2004 and 2003, and $2.2 million and $3.3 million for the nine months ended Sep. 30, 2004 and 2003, respectively. In addition, Corporate Services provides services to IPL. The allocated pension benefits costs associated with these services were $0.9 million and $0.7 million for the three months ended Sep. 30, 2004 and 2003, and $2.6 million and $2.2 million for the nine months ended Sep. 30, 2004 and 2003, respectively. The other postretirement benefits costs shown previously represent the allocated other postretirement benefits costs for all IPL plans. The allocated other postretirement benefits costs associated with Corporate Services for IPL were $0.6 million and $0.4 million for the three months ended Sep. 30, 2004 and 2003, and $1.8 million and $1.2 million for the nine months ended Sep. 30, 2004 and 2003, respectively.

  IPL estimates that funding for the bargaining unit qualified pension plans and other postretirement benefits plans for 2004 will be approximately $19 million and $11 million, of which $19 million and $8 million, respectively, has been contributed through Sep. 30, 2004. In addition, IPL contributed $18 million in September 2004 related to the non-bargaining pension plan sponsored by Corporate Services.

  As a result of the adoption of FSP 106-2 in the second quarter of 2004 and anticipated eligibility for subsidies from Medicare, the estimated reductions in IPL’s 2004 other postretirement benefits costs and accumulated projected benefit obligation are $2 million and $12 million, respectively.

15.

As of Sep. 30, 2004, IPL’s minimum commitments for 2005 and beyond for purchased-power, coal and natural gas were $5.7 million, $95.1 million and $168.4 million, respectively. In addition, for 2005 and beyond, system-wide purchased-power contracts of $49.3 million and coal contracts of $154.1 million have not yet been directly assigned to IPL and WPL since the specific needs of each utility are not yet known.


23

WISCONSIN POWER AND LIGHT COMPANY
CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED)

 For the Three Months For the Nine Months
 Ended September 30, Ended September 30,
 2004 20032004 2003

 (in thousands)
Operating revenues:          
  Electric utility $257,827   $271,913 $712,176   $694,001 
  Gas utility 24,528   33,871 173,960   200,802 
  Other 3,806   13,157 10,100   25,887 
 
  286,161   318,941 896,236   920,690 
 

Operating expenses:  
  Electric production fuel and purchased power 116,649   112,202 326,397   320,456 
  Cost of gas sold 12,437   22,132 112,282   141,208 
  Other operation and maintenance 65,977   71,119 203,834   220,763 
  Depreciation and amortization 27,022   27,854 80,997   83,528 
  Taxes other than income taxes 9,058   7,809 27,535   23,177 
 
  231,143   241,116 751,045   789,132 
 

Operating income  55,018   77,825 145,191   131,558 
 

Interest expense and other:  
  Interest expense 8,439   9,254 24,853   29,469 
  Equity income from unconsolidated investments (6,887 ) (5,192)(17,697 ) (14,972)
  Allowance for funds used during construction (1,266 ) (939)(3,252 ) (3,312)
  Interest income and other (408 ) (87)(640 ) (306)
 
  (122 ) 3,036 3,264   10,879 
 

Income before income taxes  55,140   74,789 141,927   120,679 
 

Income taxes  21,576   27,384 54,886   43,306 
 

Net income  33,564   47,405 87,041   77,373 
 

Preferred dividend requirements  827   827 2,483   2,483 
 

Earnings available for common stock  $32,737   $46,578 $84,558   $74,890 
 

The accompanying Notes to Condensed Consolidated Financial Statements are an integral part of these statements.

24

WISCONSIN POWER AND LIGHT COMPANY
CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED)

ASSETS September 30, December 31,
2004 2003

 (in thousands)
Property, plant and equipment:      
  Electric plant in service $2,105,678   $2,002,006 
  Gas plant in service 315,207   301,201 
  Other plant in service 281,703   275,637 
  Accumulated depreciation (1,207,617 ) (1,139,599)
 
    Net plant 1,494,971   1,439,245 
  Construction work in progress 73,866   67,200 
  Other, less accumulated depreciation of $284 and $301 17,922   15,717 
 
  1,586,759   1,522,162 
 

Current assets:  
  Cash and temporary cash investments 28,636   27,075 
  Accounts receivable: 
     Customer, less allowance for doubtful accounts of $2,174 and $2,662 112,482   78,934 
     Other, less allowance for doubtful accounts of $97 and $422 20,315   24,374 
  Income tax refunds receivable 23,912   16,795 
  Production fuel, at average cost 16,863   17,655 
  Materials and supplies, at average cost 25,319   22,922 
  Gas stored underground, at average cost 32,422   24,277 
  Regulatory assets 26,393   24,225 
  Prepaid gross receipts tax 24,021   28,341 
  Other 16,790   14,591 
 
  327,153   279,189 
 

Investments:  
  Nuclear decommissioning trust funds 241,973   233,665 
  Investment in ATC and other 157,150   144,075 
 
  399,123   377,740 
 

Other assets:  
  Regulatory assets 79,726   95,944 
  Deferred charges and other 184,088   194,242 
 
  263,814   290,186 
 

Total assets  $2,576,849   $2,469,277 
 

The accompanying Notes to Condensed Consolidated Financial Statements are an integral part of these statements.

25

WISCONSIN POWER AND LIGHT COMPANY
CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Continued)

 September 30, December 31,
CAPITALIZATION AND LIABILITIES 2004 2003

 (in thousands, except share amounts)
Capitalization:      
  Common stock - $5 par value - authorized 18,000,000 shares; 
       13,236,601 shares outstanding $66,183   $66,183 
  Additional paid-in capital 525,698   525,603 
  Retained earnings 458,139   440,286 
  Accumulated other comprehensive loss (20,235 ) (20,235)
 
    Total common equity 1,029,785   1,011,837 
 
  Cumulative preferred stock 59,963   59,963 
  Long-term debt, net (excluding current portion) 364,214   336,409 
 
  1,453,962   1,408,209 
 

Current liabilities:  
  Current maturities 88,000   62,000 
  Variable rate demand bonds 39,100   55,100 
  Accounts payable 59,147   80,051 
  Accounts payable to associated companies 52,444   22,615 
  Accrued taxes 18,849   6,284 
  Regulatory liabilities 21,659   13,874 
  Other 31,340   27,196 
 
  310,539   267,120 
 

Other long-term liabilities and deferred credits:  
  Accumulated deferred income taxes 225,925   213,652 
  Accumulated deferred investment tax credits 20,288   21,471 
  Regulatory liabilities 239,015   227,956 
  Asset retirement obligations 197,266   187,358 
  Pension and other benefit obligations 63,503   59,042 
  Other 66,351   84,469 
 
  812,348   793,948 
 

Total capitalization and liabilities  $2,576,849   $2,469,277 
 

The accompanying Notes to Condensed Consolidated Financial Statements are an integral part of these statements.

26

WISCONSIN POWER AND LIGHT COMPANY
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED)

 For the Nine Months Ended September 30,
 2004 2003

 (in thousands)
Cash flows from operating activities:      
  Net income $87,041   $77,373 
  Adjustments to reconcile net income to net cash  
   flows from operating activities:  
     Depreciation and amortization 80,997   83,528 
     Amortization of nuclear fuel 4,926   4,052 
     Amortization of deferred energy efficiency expenditures 25,588   31,685 
     Deferred tax expense and investment tax credits 13,035   9,072 
     Equity income from unconsolidated investments, net (17,697 ) (14,972)
     Distributions from equity method investments 16,814   10,791 
     Other (1,253 ) (1,036)
  Other changes in assets and liabilities:  
     Accounts receivable 20,511   (31,573)
     Sale of accounts receivable (50,000 ) (116,000)
     Gas stored underground (8,145 ) (11,219)
     Accounts payable 19,728   6,357 
     Accrued taxes 12,565   (5,670)
     Other (23,663 ) (7,141)
 
       Net cash flows from operating activities 180,447   35,247 
 

Cash flows from (used for) financing activities:  
     Common stock dividends (66,705 ) (46,768)
     Preferred stock dividends (2,483 ) (2,483)
     Capital contribution from parent --   200,000 
     Proceeds from issuance of long-term debt 100,000   -- 
     Reductions in long-term debt (62,000 ) (70,000)
     Net change in commercial paper --   (17,000)
     Other (4,367 ) (13,353)
 
       Net cash flows from (used for) financing activities (35,555 ) 50,396 
 

Cash flows used for investing activities:  
     Utility construction and acquisition expenditures (142,891 ) (103,454)
     Nuclear decommissioning trust funds (2,157 ) (2,157)
     Other 1,717   15,150 
 
       Net cash flows used for investing activities (143,331 ) (90,461)
 

Net increase (decrease) in cash and temporary cash investments  1,561   (4,818)
 

Cash and temporary cash investments at beginning of period  27,075   8,577 
 

Cash and temporary cash investments at end of period  $28,636   $3,759 
 

Supplemental cash flows information:  
  Cash paid during the period for: 
     Interest $24,813   $30,597 
 
     Income taxes, net of refunds $34,252   $46,385 
 

The accompanying Notes to Condensed Consolidated Financial Statements are an integral part of these statements.

27

WISCONSIN POWER AND LIGHT COMPANY
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

  Except as modified below, the Alliant Energy Notes to Condensed Consolidated Financial Statements are incorporated by reference insofar as they relate to WPL.

1.

The interim condensed consolidated financial statements included herein have been prepared by WPL, without audit, pursuant to the rules and regulations of the SEC. Accordingly, certain information and footnote disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted, although management believes that the disclosures are adequate to make the information presented not misleading. The condensed consolidated financial statements include WPL and its consolidated subsidiaries. WPL is a direct subsidiary of Alliant Energy. These financial statements should be read in conjunction with the financial statements and the notes thereto included in WPL’s latest Annual Report on Form 10-K.


  In the opinion of management, all adjustments, which are normal and recurring in nature, necessary for a fair presentation of the condensed consolidated results of operations for the three and nine months ended Sep. 30, 2004 and 2003, the condensed consolidated financial position at Sep. 30, 2004 and Dec. 31, 2003, and the condensed consolidated statements of cash flows for the nine months ended Sep. 30, 2004 and 2003 have been made. Because of the seasonal nature of WPL’s operations, results for the three and nine months ended Sep. 30, 2004 are not necessarily indicative of results that may be expected for the year ending Dec. 31, 2004. Certain prior period amounts have been reclassified on a basis consistent with the current period presentation.

2.

WPL’s comprehensive income, and the components of other comprehensive loss, net of taxes, for the three and nine months ended Sep. 30 were as follows (in thousands):


 Three Months Nine Months
 
 2004 20032004 2003
 
Earnings available for common stock $32,737   $46,578 $84,558   $74,890 
        Unrealized holding losses on qualifying derivatives, net of tax --   -- --   (5,914)
        Less: reclassification adjustment for losses included in 
          earnings available for common stock, net of tax --   -- --   (5,597)
 
     Net unrealized losses on qualifying derivatives --   -- --   (317)
 
   Other comprehensive loss --   -- --   (317)
 
Comprehensive income $32,737   $46,578 $84,558   $74,573 
 
3.

Certain financial information relating to WPL’s significant business segments is as follows. Gas revenues included $3.6 million and $15.2 million for the three months ended Sep. 30, 2004 and 2003, and $18.5 million and $36.8 million for the nine months ended Sep. 30, 2004 and 2003, respectively, for sales to the electric segment. All other intersegment revenues were not material to WPL’s operations.


 ElectricGasOtherTotal
 
 (in thousands)
Three Months Ended Sep. 30, 2004          
Operating revenues   $257,827   $24,528   $3,806   $286,161  
Operating income (loss)   58,141   (2,804 ) (319 ) 55,018  
Earnings available for common stock               32,737  
 
Three Months Ended Sep. 30, 2003  
Operating revenues $271,913 $33,871 $13,157 $318,941 
Operating income (loss) 79,620 (2,685)890 77,825 
Earnings available for common stock       46,578 
 
Nine Months Ended Sep. 30, 2004  
Operating revenues   $712,176   $173,960   $10,100   $896,236  
Operating income (loss)   131,491   15,770   (2,070 ) 145,191  
Earnings available for common stock               84,558  

28

 ElectricGasOtherTotal
 
 (in thousands)
Nine Months Ended Sep. 30, 2003      
Operating revenues $694,001 $200,802 $25,887 $920,690 
Operating income 117,135 13,971 452 131,558 
Earnings available for common stock             74,890 

10.

The components of WPL’s qualified pension benefits and other postretirement benefits costs for the three and nine months ended Sep. 30 were as follows (in thousands):


 Qualified Pension Benefits Other Postretirement Benefits
 
 2004 20032004 2003
 
Three months ended Sep. 30:          
Service cost $1,271   $991 $989   $847 
Interest cost 2,830   2,642 1,340   1,309 
Expected return on plan assets (4,015 ) (3,377)(455 ) (359)
Amortization of: 
   Transition obligation --   -- 292   287 
   Prior service cost 161   104 (7 ) (5)
   Actuarial loss 721   883 326   204 
 
  $968   $1,243 $2,485   $2,283 
 
Nine months ended Sep. 30:  
Service cost $3,758   $2,973 $3,053   $2,541 
Interest cost 8,397   7,926 4,072   3,927 
Expected return on plan assets (11,890 ) (10,131)(1,281 ) (1,077)
Amortization of: 
   Transition obligation --   -- 858   861 
   Prior service cost 425   312 (14 ) (15)
   Actuarial loss 2,272   2,649 1,095   612 
 
  $2,962   $3,729 $7,783   $6,849 
 

  The pension benefits costs shown in the previous table represent only the pension benefits costs for bargaining unit employees of WPL covered under the bargaining unit pension plan that is sponsored by WPL. The pension benefits costs for WPL’s non-bargaining employees who are participants in other Alliant Energy plans were $0.1 million and $0.5 million for the three months ended Sep. 30, 2004 and 2003, and $0.4 million and $1.4 million for the nine months ended Sep. 30, 2004 and 2003, respectively. In addition, Corporate Services provides services to WPL. The allocated pension benefits costs associated with these services were $0.5 million and $0.6 million for the three months ended Sep. 30, 2004 and 2003, respectively, and $1.6 million for both the nine months ended Sep. 30, 2004 and 2003. The other postretirement benefits costs shown previously represent the allocated other postretirement benefits costs for all WPL plans. The allocated other postretirement benefits costs associated with Corporate Services for WPL were $0.4 million and $0.2 million for the three months ended Sep. 30, 2004 and 2003, and $1.2 million and $0.7 million for the nine months ended Sep. 30, 2004 and 2003, respectively.

  WPL estimates that funding for the bargaining unit qualified pension plan and other postretirement benefits plans for 2004 will be approximately $5 million and $4 million, respectively, all of which has been contributed through Sep. 30, 2004.

  As a result of the adoption of FSP 106-2 in the second quarter of 2004 and anticipated eligibility for subsidies from Medicare, the estimated reductions in WPL’s 2004 other postretirement benefits costs and accumulated projected benefit obligation are $1 million and $7 million, respectively.

15.

As of Sep. 30, 2004, WPL’s minimum commitments for 2005 and beyond for purchased-power (excluding operating leases), coal and natural gas were $4.2 million, $66.7 million and $197.1 million, respectively. In addition, for 2005 and beyond, system-wide purchased-power contracts of $49.3 million and coal contracts of $154.1 million have not yet been directly assigned to IPL and WPL since the specific needs of each utility are not yet known.


29

ITEM 2.MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
 RESULTS OF OPERATIONS

Alliant Energy operates as a registered public utility holding company subject to the limitations imposed by PUHCA. The primary first tier subsidiaries of Alliant Energy include IPL, WPL, Resources and Corporate Services. IPL is a public utility engaged principally in the generation, transmission, distribution and sale of electric energy; and the purchase, distribution, transportation and sale of natural gas in selective markets in Iowa, Minnesota and Illinois. WPL is a public utility engaged principally in the generation, distribution and sale of electric energy; and the purchase, distribution, transportation and sale of natural gas in selective markets in Wisconsin and Illinois. Resources manages a portfolio of wholly-owned subsidiaries and additional investments through distinct platforms: Non-regulated Generation (domestic generation projects), International (foreign energy generation and delivery systems), Integrated Services (energy and environmental services) and Other Investments. Corporate Services provides administrative services to Alliant Energy and its subsidiaries as required under PUHCA. This MD&A includes information relating to Alliant Energy, IPL and WPL (as well as Resources and Corporate Services). Where appropriate, information relating to a specific entity has been segregated and labeled as such. The following discussion and analysis should be read in conjunction with the Condensed Consolidated Financial Statements and Notes to Condensed Consolidated Financial Statements included in this report as well as the financial statements, notes and MD&A included in Alliant Energy’s, IPL’s and WPL’s latest combined Annual Report on Form 10-K.

FORWARD-LOOKING STATEMENTS

Statements contained in this report that are not of historical fact are forward-looking statements intended to qualify for the safe harbors from liability established by the Private Securities Litigation Reform Act of 1995. Such forward-looking statements are subject to risks and uncertainties that could cause actual results to differ materially from those expressed in, or implied by, such statements. Some, but not all, of the risks and uncertainties include: weather effects on sales and revenues; economic and political conditions in Alliant Energy’s domestic and international service territories; federal, state and international regulatory or governmental actions, including the impact of potential energy-related legislation in Congress as well as the recently enacted federal tax legislation, including any potential tax charges incurred related to foreign repatriation of earnings, the ability to obtain adequate and timely rate relief to allow for, among other things, the recovery of operating costs, the earning of reasonable rates of return in current and future rate proceedings and the payment of expected levels of dividends; unanticipated construction and acquisition expenditures; unanticipated issues in connection with Alliant Energy’s construction of new generating facilities; issues related to the supply of purchased electricity and price thereof, including the ability to recover purchased-power and fuel costs in a timely manner through domestic and international rates; issues related to electric transmission, including recovery of costs incurred, and federal legislation and regulation affecting such transmission; risks related to the operations of Alliant Energy’s nuclear facilities and unanticipated issues relating to the pending sale of Alliant Energy’s interest in Kewaunee; costs associated with Alliant Energy’s environmental remediation efforts and with environmental compliance generally; developments that adversely impact Alliant Energy’s ability to implement its strategic plan; the amount of premiums incurred in connection with Alliant Energy’s planned debt reductions; the results from Alliant Energy’s Brazil investments; improved results from Alliant Energy’s non-regulated businesses as a whole; stable foreign exchange rates; no material permanent declines in the fair value of, or expected cash flows from, Alliant Energy’s investments; Alliant Energy’s ability to continue cost controls and operational efficiencies; Alliant Energy’s ability to identify and successfully complete proposed acquisitions and development projects; Alliant Energy’s ability to complete the divestiture of the remaining businesses within its Integrated Services business unit in a timely fashion; Alliant Energy’s ability to achieve its EPS growth goal; access to technological developments; employee workforce factors, including changes in key executives, collective bargaining agreements or work stoppages; continued access to the capital markets; the ability to successfully complete ongoing tax audits and appeals with no material impact on Alliant Energy’s earnings or cash flows; inflation rates; and factors listed in “Other Matters - Other Future Considerations.” Alliant Energy assumes no obligation, and disclaims any duty, to update the forward-looking statements in this report.

STRATEGIC OVERVIEW

Alliant Energy’s domestic utility business is its core business and the sole growth platform within its strategic plan. The strategic plan is concentrated on building and maintaining the generation and infrastructure necessary to provide Alliant Energy’s domestic utility customers with safe, reliable and environmentally sound energy service. Alliant Energy’s strategic plan also includes focusing on the profitability and cash flows of its remaining non-regulated businesses which will serve as ongoing business platforms. The following is an update related to Alliant Energy’s domestic utility generation plan:

o   IPL’s 565 MW, combined-cycle, natural gas-fired generating facility (Emery) near Mason City, Iowa was completed on time and on budget and placed in service in May 2004.

30

o   Calpine Corporation’s 600 MW, combined-cycle, natural gas-fired generating facility (Riverside) in Beloit, Wisconsin was placed in service in June 2004. WPL has contracted for 453 MW of this plant’s output.
o   Alliant Energy continues to make steady progress related to acquiring regulatory approvals for the 300 MW, simple-cycle, natural gas-fired generating facility under construction near Sheboygan Falls, Wisconsin. Resources’ Non-regulated Generation business began construction of the generating facility in the third quarter of 2004 and is expected to complete the facility in time to meet increased summer demand in 2005. Alliant Energy is proposing that Resources’ Non-regulated Generation business would own the facility and enter into a long-term agreement with WPL whereby WPL would operate and maintain the facility and have exclusive rights to the generation output. The facility is expected to cost approximately $155 million, of which $90 million had already been expended as of Sep. 30, 2004. The project and proposed structure is subject to final PSCW approval.
o   In May 2004, Alliant Energy announced WPL would pursue plans to build a jointly-owned 500 MW base-load electric plant with WPSC (respective ownership levels have not yet been determined). The planning process will include feasibility and siting studies. Based on the current energy requirement studies of both companies, WPL expects significant increases in electric supply are likely to be needed to offset rising energy demand by 2010. Alliant Energy expects to announce decisions on both location and fuel source for the plant by the end of the first quarter of 2005.
o   In October 2004, the federal renewable energy production tax credit was extended for generating facilities placed in service prior to Jan. 1, 2006. As a result, Alliant Energy will move forward with its plans to add up to 230 MW of wind generation to its diversified generation portfolio. WPL is reviewing the bids it received earlier in 2004 for adding 100 MW of wind generation in one or more locations in Wisconsin in 2005.

Alliant Energy also continues to evaluate the performance of all its businesses, both utility and non-regulated, and is focused on taking actions to increase the returns earned on invested capital in all of its businesses. Alliant Energy is committed to streamlining its portfolio of businesses to only those that can provide meaningful earnings and cash flows for shareowners and those it is prepared to invest the capital needed to reach the scale necessary to generate such earnings and cash flows. Consistent with this strategic focus, Alliant Energy is pursuing the divestiture of several utility and non-regulated businesses.

In August 2004, Alliant Energy announced its intention to sell its two Illinois utility properties (net book value of approximately $50 million to $60 million). The administrative costs of serving relatively few customers in a jurisdiction that requires the same regulatory and administrative support as a state with a larger number of customers make it difficult for Alliant Energy to offer its services cost-effectively. Alliant Energy currently intends to enter into a sales agreement for the Illinois properties by the end of the first quarter of 2005 and any such sales agreement would be subject to regulatory approvals. In September 2004, a tentative verbal agreement between WPL and the city of Ripon was reached on the purchase price of WPL’s Ripon water utility and WPL also continues to make progress on the sale of its South Beloit water utility. Additionally, the sale of Kewaunee to Dominion continues to move through the regulatory process. None of these utility assets qualified as assets held for sale as of Sep. 30, 2004.

In July 2004, Alliant Energy announced its intention to divest its energy services (Cogenex Corporation and affiliates), gas marketing (NGE) and energy management services businesses within its Integrated Services non-regulated business platform. In September 2004, Alliant Energy successfully completed the sale of substantially all of the assets of NGE. Alliant Energy is currently in the process of executing its divestiture plan for the other two businesses. At Sep. 30, 2004, NGE and the energy services business qualified as assets held for sale and discontinued operations. Refer to Note 7 of Alliant Energy’s “Notes to Condensed Consolidated Financial Statements” for additional information regarding these two businesses. Alliant Energy currently intends to complete the divestiture of its energy management services business within the next twelve months and expects this business will qualify for reporting as assets held for sale and discontinued operations in the fourth quarter of 2004. The net losses from the energy management services business included in Alliant Energy’s consolidated income from continuing operations were $0.4 million for both the three months ended Sep. 30, 2004 and 2003, and $4.6 million and $1.1 million for the nine months ended Sep. 30, 2004 and 2003, respectively. The proceeds from the divestiture of these Integrated Services businesses would be available for debt reduction at Resources.

31

RATES AND REGULATORY MATTERS

A summary of the regulatory environment is included in the combined Form 10-K filed by Alliant Energy, IPL and WPL for the year ended Dec. 31, 2003. Set forth below are recent developments relating to the regulatory environment.

Details of Alliant Energy’s rate cases impacting its historical and future results of operations are as follows (dollars in millions):

  Expected Return  
  Interim Interim Final Final Final on  
  Utility Filing Increase Increase Effective Increase Effective Effective Common  
          Case Type Date Requested Granted (1) Date Granted (1) Date Date Equity Notes

WPL:          
  2003 retailE/G/W5/02$123$--N/A$814/03N/A12% 
  2004 retailE/G/W3/0387--N/A141/04N/A12% 
  2005/2006 retailE/G/W9/0463N/AN/ATBDTBD7/05TBD(2)
  WholesaleE2/02664/0231/03N/AN/A(3)
  WholesaleE3/03557/0352/04N/AN/A 
  WholesaleE8/0412121/05TBDTBD8/05N/A 
  South Beloit        G-9.87%/ 
     retail - ILG/W10/031N/AN/A110/04N/AW-9.64% 
  2004 retail
     (fuel-related)E2/0416163/041010/04N/AN/A(4)
IPL:
  IA retailE3/0282157/02265/03N/A11.15% 
  IA retailG7/02201710/02138/03N/A11.05%(3)
  IA retailE3/04149986/04TBD TBD3/05TBD(5)
  MN retailE5/03527/0319/04N/A11.25%(4)

(1)  

Interim rate relief is implemented, subject to refund, pending determination of final rates. The final rate relief granted replaces the amount of interim rate relief granted.

(2)  

The 2005/2006 retail rate case is based on a test period from July 2005 to June 2006.

(3)  

Since the final increase was lower than the interim relief granted, a refund to customers was made in 2003.

(4)  

Since the final increase was lower than the interim relief granted, a refund to customers will be made in the fourth quarter of 2004. Such refunds were appropriately reserved for at Sep. 30, 2004.

(5)  

IPL requested interim rate relief of approximately $106 million. In July 2004, a non-unanimous settlement agreement was filed with the IUB proposing resolution of all revenue requirement issues in the case. A majority of the parties to the case signed the settlement agreement including IPL, the Iowa Office of Consumer Advocate, and certain other customers and/or customer groups. The parties agreed to an increase in IPL’s annual Iowa electric rates of $107 million ($9 million more than the revenues granted in the IUB’s interim order) and a return on equity for capital unrelated to Emery of 10.7%. Capital related to Emery will continue to earn a return on equity of 12.23% consistent with the ratemaking principles granted by the IUB in 2002. The elements of the settlement agreement are subject to approval by the IUB. A decision by the IUB on the settlement is expected in the first quarter of 2005. The filing of the settlement agreement does not impact interim rates.


With the exception of recovering a return on IPL’s Emery plant, which is a large component of IPL’s retail Iowa electric rate case filed in March 2004, and on other additions to IPL’s and WPL’s infrastructure, a significant portion of the rate increases included in the previous table reflect the recovery of increased costs incurred by IPL and WPL or costs they expect to incur. In addition to the 2005/2006 retail base rate case, WPL currently plans to file an estimated $35 million fuel-related rate case in early 2005, with anticipated approval from the PSCW to implement interim rates for the fuel-related increase to be effective approximately three weeks after the filing is made. The major drivers in the base rate and fuel-related rate cases for 2005 are both fixed and variable fuel and purchased-power costs. Thus, the potential increase in revenues related to these rate increase requests are not expected to result in a corresponding increase in net income.

In March 2004, a new ratemaking law was passed in Iowa. The new law allows utilities to place in effect interim rates, subject to refund, without review by the IUB within ten days of filing a general rate increase request. The law also allows the IUB to consider known and measurable changes in costs and revenues occurring within nine months from the end of the historical test year in setting final rates in a rate case. Both of these changes are designed to mitigate regulatory lag in Iowa ratemaking, which uses a historical versus projected test year in setting rates. IPL does not expect this new law to have any impact on its pending retail electric rate case in Iowa as it is only expected to impact future Iowa rate cases.

32

ALLIANT ENERGY RESULTS OF OPERATIONS

Unless otherwise noted, all “per share” references in the Results of Operations section refer to earnings perdiluted share.

Overview — Third Quarter Results Alliant Energy’s net income and EPS for the third quarter were as follows (dollars in millions; totals may not foot due to rounding):

 2004 2003
 
Continuing operations:Net Income EPS* Net IncomeEPS*
 
    Domestic utility $91 .1 $0 .83 $83.9$0.77
    Non-regulated (Resources) (12 .7) (0 .12) (3.2)(0.03)
    Alliant Energy parent and other (primarily taxes, interest 
      and administrative and general) 9 .0 0 .09 3.90.03
    Effect of additional shares outstanding   (0 .04)
 
Income from continuing operations 87 .4 0 .76 84.60.77
Income (loss) from discontinued operations (5 .6) (0 .05) 18.60.17
 
Net income $81 .8 $0 .71 $103.2$0.94
 

*   The 2004 and 2003 EPS amounts from continuing operations have been computed based on the average diluted shares outstanding in 2003. For purposes of this table, Alliant Energy reports the impact of increased shares outstanding as a separate earnings variance item if it is material.

Alliant Energy experienced extremely mild weather conditions in its domestic utility service territories in the third quarter of 2004 and estimates this had a negative impact of $0.12-0.14 per share on earnings in the third quarter of 2004. In spite of this, Alliant Energy’s earnings from its domestic utility business were higher in the third quarter of 2004 compared to the same period in 2003 due to the impact of rate increases, Alliant Energy’s comprehensive cost-control and operational efficiency efforts, weather-normalized sales growth and a lower effective income tax rate. The decline in Alliant Energy’s non-regulated results from continuing operations was primarily due to lower results from its International and Integrated Services business units.

Domestic Utility Electric Margins Electric margins and MWh sales for Alliant Energy for the three months ended Sep. 30 were as follows (in thousands):

 Revenues and Costs MWhs Sold
 
 2004 2003Change2004 2003Change
 
Residential $211,486   $219,045 (3%)1,945   2,231 (13%)
Commercial 132,890   122,870 8%1,528   1,537 (1%)
Industrial 179,338   165,180 9%3,273   3,182 3%
 
 
 
   Total from retail customers 523,714   507,095 3%6,746   6,950 (3%)
Sales for resale 43,209   58,721 (26%)1,179   1,456 (19%)
Other 16,304   14,238 15%41   43 (5%)
 
 
 
   Total revenues/sales 583,227   580,054 1%7,966   8,449 (6%)
  
 
Electric production fuel and 
   purchased-power expense 195,143   195,534 -- 
 
 
   Margin $388,084   $384,520 1%
 
 

33

Electric margins and MWh sales for Alliant Energy for the nine months ended Sep. 30 were as follows (in thousands):

 Revenues and Costs MWhs Sold
 
 2004 2003Change2004 2003Change
 
Residential $544,252  $530,458 3%5,549  5,800 (4%)
Commercial 331,859  313,658 6%4,267  4,260 -- 
Industrial 464,933  432,586 7%9,414  9,173 3%
 
 
 
   Total from retail customers 1,341,044  1,276,702 5%19,230  19,233 -- 
Sales for resale 137,991  150,543 (8%)3,860  4,011 (4%)
Other 40,732  39,942 2%136  136 -- 
 
 
 
   Total revenues/sales 1,519,767  1,467,187 4%23,226  23,380 (1%)
 
 
Electric production fuel and 
   purchased-power expense 565,476  561,859 1%
 
 
   Margin $954,291  $905,328 5%
 
 

Electric margins increased $3.6 million, or 1%, and $49.0 million, or 5%, for the three- and nine-month periods, respectively, primarily due to the impact of various rate increases implemented in 2003 and 2004, weather-normalized sales growth including increased industrial sales which reflect improving economic conditions in Alliant Energy’s domestic utility service territories, lower purchased-power capacity costs at IPL and lower fuel and purchased-power energy costs at WPL. These items were partially offset by the impact of extremely mild weather conditions in the third quarter of 2004 and reduced energy conservation revenues. Cooling degree days in Cedar Rapids and Madison were 69% and 44% below normal in the third quarter of 2004, respectively. Alliant Energy estimates that the extremely mild weather conditions during the third quarter of 2004 reduced electric margins by approximately $23 million to $27 million, or $0.12 to 0.14 per share. By comparison, the impact of weather on the third quarter of 2003 results was not significant. Weather also had a modest downward impact on electric margins for the first six months of the year in 2004 and 2003. The reduced energy conservation revenues were largely offset by lower energy conservation expenses.

The three-month increase was also partially offset by higher purchased-power capacity costs at WPL related to the Riverside tolling agreement and the timing of rate collection of these costs. Monthly capacity costs related to the Riverside agreement began in June 2004 when the plant was placed in service and are higher during the peak demand period from May 1 through Sep. 30 and lower in all other periods during each calendar year. Recovery of these costs through rates began in January 2004 with WPL’s 2004 retail rate increase and is collected on a more levelized basis throughout the year. Total annual electric margins for 2004 are not expected to be impacted significantly. However, electric margins for the three months ended Sep. 30, 2004 were approximately $14 million lower than the same period in 2003 due to the higher summer capacity costs and the timing of rate collection of these costs.

The nine-month increase was also partially offset by the impact of seasonal rates at WPL. In April 2003, WPL implemented seasonal electric rates that are designed to result in higher rates for the peak demand period from June 1 through Sep. 30 and lower rates in all other periods during each calendar year. As a result, total annual revenues are not expected to be impacted significantly. However, the margins for the nine months ended Sep. 30, 2004 were approximately $7 million lower than the same period in 2003, all other things being equal, given the seasonal rates were not yet effective in the first quarter of 2003.

Domestic Utility Gas MarginsGas margins and Dth sales for Alliant Energy for the three months ended Sep. 30 were as follows (in thousands):

 Revenues and Costs Dths Sold
 
 2004 2003Change2004 2003Change
 
Residential $25,893  $23,401 11%1,648  1,676 (2%)
Commercial 15,639  13,727 14%1,665  1,569 6%
Industrial 4,474  5,382 (17%)729  872 (16%)
Transportation/other 8,184  19,744 (59%)9,890  11,974 (17%)
 
 
 
   Total revenues/sales 54,190  62,254 (13%)13,932  16,091 (13%)
 
 
Cost of gas sold 28,989  39,874 (27%)
 
 
   Margin $25,201  $22,380 13%
 
 

34

Gas margins and Dth sales for Alliant Energy for the nine months ended Sep. 30 were as follows (in thousands):

 Revenues and Costs Dths Sold
 
 2004 2003Change2004 2003Change
 
Residential $213,266  $215,622 (1%)20,070  21,719 (8%)
Commercial 114,528  112,043 2%12,924  13,484 (4%)
Industrial 21,457  22,876 (6%)2,985  3,361 (11%)
Transportation/other 32,756  45,986 (29%)33,702  36,586 (8%)
 
 
 
   Total revenues/sales 382,007  396,527 (4%)69,681  75,150 (7%)
 
 
Cost of gas sold 262,068  277,943 (6%)
 
 
   Margin $119,939  $118,584 1%
 
 

Gas margins increased $2.8 million, or 13%, and $1.4 million, or 1%, for the three- and nine-month periods, respectively, primarily due to rate refund reserves recorded by IPL in 2003 for the Iowa retail rate case. The nine-month increase was also due to improved results of $4 million from WPL’s performance-based commodity cost recovery program (benefits are shared by ratepayers and shareowners), partially offset by lower sales due to milder weather conditions in 2004 compared to 2003. Transportation/other sales decreased for the three- and nine-month periods due to reduced demand from natural gas-fired electric generating facilities during the third quarter of 2004, primarily due to lower electricity demand as a result of the extremely mild weather conditions. The impact of these sales decreases on gas margins was not significant.

Refer to “Rates and Regulatory Matters” for discussion of various electric and gas rate filings.

Domestic Utility Other RevenuesOther revenues for the domestic utilities decreased $5.5 million and $14.6 million for the three- and nine-month periods, respectively, due to lower construction management revenues from WindConnect™, resulting from uncertainty during the nine months ended Sep. 30, 2004 regarding the extension of the federal renewable energy production tax credit, and lower water revenues due to the 2003 sale of WPL’s water utility serving the Beloit area. These decreases were largely offset by lower operating expenses. The federal renewable energy production tax credit was extended in the fourth quarter of 2004 for generating facilities placed in service prior to Jan. 1, 2006.

Non-regulated RevenuesDetails regarding Alliant Energy’s non-regulated revenues for the three and nine months ended Sep. 30 were as follows (in thousands):

 Three Months Nine Months
 
 2004 20032004 2003
 
International $32,458   $30,635 $98,384   $85,777 
Integrated Services 27,168   31,082 83,861   93,047 
Non-regulated Generation 3,764   4,656 11,053   10,921 
Other (includes eliminations) 6,651   6,220 19,743   18,044 
 
  $70,041   $72,593 $213,041   $207,789 
 

The increased International revenues for the three- and nine-month periods were primarily due to increased production at Alliant Energy’s generating facilities in China resulting from increased electricity and steam demand. Also contributing to the nine-month International increase was the acquisition of an additional combined heat and power facility in China in the second quarter of 2003. The decreased Integrated Services revenues for the three- and nine-month periods were primarily due to lower revenues at Alliant Energy’s environmental and engineering services business.

Other Operating ExpensesOther operation and maintenance expense for the domestic utilities decreased $12.2 million and $20.9 million for the three- and nine-month periods, respectively, primarily due to the lower expenses for WindConnect™, lower energy conservation expenses and lower transmission and distribution costs, partially offset by increases in employee and retiree benefits (comprised of compensation, medical and pension costs). The nine-month decrease was also impacted by a planned refueling outage at Kewaunee in the second quarter of 2003 (there was no such outage in 2004). Also contributing to the three- and nine-month decreases was the impact of comprehensive cost-control and operational efficiency efforts.

35

Non-regulated operation and maintenance expenses for the three and nine months ended Sep. 30 were as follows (in thousands):

 Three Months Nine Months
 
 2004 20032004 2003
 
International $28,188  $21,625 $81,490  $64,962 
Integrated Services 27,355  27,513 81,034  84,560 
Non-regulated Generation 1,193  4,979 3,649  8,218 
Other (includes eliminations) 6,179  7,380 20,402  19,877 
 
  $62,915  $61,497 $186,575  $177,617 
 

The International increase for the three- and nine-month periods was largely due to higher coal and related transportation costs for its generating facilities in China and the increased generation discussed previously. Refer to “Other Matters — Other Future Considerations — China” for additional discussion of the coal and related transportation costs. The Integrated Services variances were due to the same factors impacting the revenues variances discussed previously, partially offset by bad debt and litigation-related expenses recorded in the third quarter of 2004. The Integrated Services decrease for the nine-month period was also partially offset by a pre-tax, non-cash goodwill impairment charge of $2 million in the second quarter of 2004 related to its energy management services business. Refer to “Strategic Overview” for discussion of the proposed divestiture of this business. The Non-regulated Generation decrease for the three- and nine-month periods was largely due to a charge recorded in the third quarter of 2003 related to a cancelled contract.

Depreciation and amortization expense increased $5.2 million and $17.5 million for the three- and nine-month periods, respectively, primarily due to utility property additions, including Emery, and the implementation of higher depreciation rates at IPL on Jan. 1, 2004 resulting from an updated depreciation study, partially offset by lower software amortizations at WPL. Taxes other than income taxes increased $2.9 million and $8.0 million for the three- and nine-month periods, respectively, primarily due to increased gross receipts and property taxes.

Interest Expense and OtherInterest expense decreased $3.9 million and $26.1 million for the three- and nine-month periods, respectively, primarily due to lower average borrowings as a result of debt retirements within Alliant Energy’s non-regulated businesses in 2003 and 2004. The impact of additional equity issued by Alliant Energy during the last 12 months and various debt refinancings also contributed to the decreases for both the three- and nine-month periods. The nine-month decrease was also due to credit facility fees incurred at Resources during the first half of 2003.

Loss on early extinguishment of debt includes debt repayment premiums and charges for the unamortized debt expenses related to long-term debt retirements of $20 million and $15 million of senior notes at Resources in the first and third quarters of 2004, respectively.

Equity (income) loss from Alliant Energy’s unconsolidated investments for the three and nine months ended Sep. 30 was as follows (in thousands):

 Three Months Nine Months
 
 2004 20032004 2003
 
Brazil ($1,181 ) ($856)($15,886 ) ($3,095)
American Transmission Company LLC (4,737 ) (4,046)(13,659 ) (11,902)
New Zealand (2,241 ) (3,164)(6,863 ) (5,616)
Wisconsin River Power Company (2,150 ) (1,146)(4,038 ) (3,070)
Alliant Energy Synfuel LLC (excludes tax benefits) 4,846   4,854 14,522   14,929 
Other 838   (541)(1,130 ) (1,097)
 
  ($4,625 ) ($4,899)($27,054 ) ($9,851)
 

The higher equity income from Alliant Energy’s Brazil investments for the three- and nine-month periods was primarily due to rate increases implemented at the Brazilian operating companies in 2003 and 2004, partially offset by higher operating (including bad debt), litigation-related and interest expenses at the Brazilian operating companies. The nine-month Brazil increase was also due to a gain of $5.1 million (representing Alliant Energy’s allocated portion of the total gain) realized in the first quarter of 2004 from the sale of two hydroelectric plants.

36

Allowance for funds used during construction (AFUDC) decreased $2.7 million and increased $1.7 million for the three- and nine-month periods, respectively, primarily due to the timing of the construction of Emery.

Interest income and other decreased $3.3 million and $10.2 million for the three- and nine-month periods, respectively, largely due to lower interest income, partially due to the elimination of loans to discontinued operations due to asset sales during 2003. The nine-month decrease was also due to lower non-cash valuation adjustments related to Alliant Energy’s McLeod trading securities. Refer to Note 13 of Alliant Energy’s “Notes to Condensed Consolidated Financial Statements” for further details.

Income TaxesThe effective income tax rates were 27.2% and 27.6% for the three- and nine-month periods ended Sep. 30, 2004, respectively, compared with 31.9% and 31.0% for the same periods last year. The decreases for the three- and nine-month periods were primarily due to lower state tax expense at IPL resulting from a retroactive Iowa state law change enacted in the third quarter of 2004 and a decrease in property-related temporary differences for which deferred taxes were not provided pursuant to rate making principles.

Income (Loss) from Discontinued Operations Refer to Note 7 of Alliant Energy’s “Notes to Condensed Consolidated Financial Statements” for discussion of Alliant Energy’s discontinued operations.

Cumulative Effect of Changes in Accounting Principles In the first quarter of 2003, Alliant Energy recorded after-tax charges of $4 million and $2 million for the cumulative effect of changes in accounting principles related to the adoption on Jan. 1, 2003 of SFAS 143 and Emerging Issues Task Force Issue 02-3, “Issues Related to Accounting for Contracts Involved in Energy Trading and Risk Management Activities” within WPC and NGE, respectively.

IPL RESULTS OF OPERATIONS

Overview — Third Quarter Results Earnings available for common stock increased $20.7 million, primarily due to higher electric margins and a lower effective tax rate.

Electric MarginsElectric margins and MWh sales for IPL for the three months ended Sep. 30 were as follows (in thousands):

 Revenues and Costs MWhs Sold
 
 2004 2003Change2004 2003Change
 
Residential $120,555   $122,747 (2%)1,053   1,258 (16%)
Commercial 80,562   71,691 12%923   933 (1%)
Industrial 105,622   94,249 12%2,014   1,982 2%
 
 
 
   Total from retail customers 306,739   288,687 6%3,990   4,173 (4%)
Sales for resale 8,486   10,560 (20%)237   277 (14%)
Other 10,175   8,894 14%25   24 4%
 
 
 
   Total revenues/sales 325,400   308,141 6%4,252   4,474 (5%)
 
 
Electric production fuel and 
   purchased-power expense 78,494   83,332 (6%)
 
 
   Margin $246,906   $224,809 10%
 
 

37

Electric margins and MWh sales for IPL for the nine months ended Sep. 30 were as follows (in thousands):

 Revenues and Costs MWhs Sold
 
 2004 2003Change2004 2003Change
 
Residential $293,697  $287,076 2%2,989  3,181 (6%)
Commercial 194,233  183,286 6%2,594  2,610 (1%)
Industrial 265,911  250,291 6%5,837  5,762 1%
 
 
 
   Total from retail customers 753,841  720,653 5%11,420  11,553 (1%)
Sales for resale 29,216  28,975 1%988  867 14%
Other 24,534  23,558 4%75  76 (1%)
 
 
 
   Total revenues/sales 807,591  773,186 4%12,483  12,496 -- 
 
 
Electric production fuel and 
   purchased-power expense 239,079  241,403 (1%)
 
 
   Margin $568,512  $531,783 7%
 
 

Electric margins increased $22.1 million, or 10%, and $36.7 million, or 7%, for the three- and nine-month periods, respectively, primarily due to the impact of various rate increases implemented in 2003 and 2004, lower purchased-power capacity costs, and weather-normalized sales growth including increased industrial sales which reflect improving economic conditions in IPL’s service territory. These items were partially offset by the impact of extremely mild weather conditions in the third quarter of 2004, and reduced energy conservation revenues of $3 million and $4 million for the three- and nine-month periods, respectively. Cooling degree days in Cedar Rapids were 69% below normal in the third quarter of 2004. Alliant Energy estimates that the extremely mild weather conditions during the third quarter of 2004 reduced electric margins by approximately $14 million to $17 million. By comparison, the impact of weather on the third quarter of 2003 results was not significant. Weather also had a modest downward impact on electric margins for the first six months of the year in 2004 and 2003. The reduced energy conservation revenues were largely offset by lower energy conservation expenses.

Gas Margins Gas margins and Dth sales for IPL for the three months ended Sep. 30 were as follows (in thousands):

 Revenues and Costs Dths Sold
 
 2004 2003Change2004 2003Change
 
Residential $14,982  $13,891 8%894  1,006 (11%)
Commercial 8,284  7,730 7%871  879 (1%)
Industrial 3,901  4,651 (16%)563  773 (27%)
Transportation/other 2,495  2,111 18%6,464  6,778 (5%)
 
 
 
   Total revenues/sales 29,662  28,383 5%8,792  9,436 (7%)
 
 
Cost of gas sold 16,552  17,742 (7%)
 
 
   Margin $13,110  $10,641 23%
 
 

Gas margins and Dth sales for IPL for the nine months ended Sep. 30 were as follows (in thousands):

 Revenues and Costs Dths Sold
 
 2004 2003Change2004 2003Change
 
Residential $120,779  $116,737 3%11,401  12,776 (11%)
Commercial 63,724  57,787 10%7,074  7,523 (6%)
Industrial 15,971  15,850 1%2,190  2,541 (14%)
Transportation/other 7,573  5,351 42%21,175  21,667 (2%)
 
 
 
   Total revenues/sales 208,047  195,725 6%41,840  44,507 (6%)
 
 
Cost of gas sold 149,786  136,735 10%
 
 
   Margin $58,261  $58,990 (1%)
 
 

Gas margin increased $2.5 million, or 23%, and decreased $0.7 million, or 1%, for the three- and nine-month periods, respectively. The three-month increase was primarily due to a rate refund reserve recorded in 2003 for the Iowa retail rate case. The nine-month decrease was primarily due to lower sales, which were partially due to milder weather conditions in 2004 compared to 2003, partially offset by the rate refund reserve recorded in 2003.

38

Refer to “Rates and Regulatory Matters” for discussion of IPL’s electric and gas rate filings.

Steam and Other Revenues Steam and other revenues increased $3.8 million for the three-month period, primarily due to higher construction management revenues from WindConnect™. The increase was largely offset by higher other operation and maintenance expenses related to IPL’s WindConnect™ program.

Other Operating Expenses Other operation and maintenance expenses decreased $6.4 million and $1.5 million for the three- and nine-month periods, respectively, primarily due to lower transmission and distribution costs and energy conservation expenses. The three-month decrease was partially offset by higher expenses for WindConnect™. The nine-month decrease was partially offset by increases in employee and retiree benefits (comprised of compensation, medical and pension costs). Also contributing to the three- and nine-month decreases was the impact of comprehensive cost-control and operational efficiency efforts. Depreciation and amortization expense increased $6.3 million and $19.6 million for the three- and nine-month periods, respectively, primarily due to property additions, including Emery, and the implementation of higher depreciation rates on Jan. 1, 2004 resulting from an updated depreciation study. Taxes other than income taxes increased $1.9 million and $3.5 million for the three- and nine-month periods, respectively, due to increased property taxes.

Interest Expense and Other Interest expense increased $2.1 million and $2.0 million for the three- and nine-month periods, respectively, due to higher average borrowings outstanding primarily due to financing a portion of the construction costs of Emery. AFUDC decreased $3.0 million and increased $1.7 million for the three- and nine-month periods, respectively, due to the timing of the construction of Emery.

Income Taxes The effective income tax rates were 35.5% and 37.8% for the three- and nine-month periods ended Sep. 30, 2004, respectively, compared with 45.4% and 43.0% for the same periods last year. The decreases for the three- and nine-month periods were primarily due to lower state tax expense resulting from a retroactive Iowa state law change enacted in the third quarter of 2004 and a decrease in property-related temporary differences for which deferred tax expense is not recorded pursuant to rate making principles. The nine-month decrease was partially offset by a decrease in the Alliant Energy tax benefit allocated to IPL pursuant to the provisions of PUHCA.

WPL RESULTS OF OPERATIONS

Overview — Third Quarter Results Earnings available for common stock decreased $13.8 million, primarily due to lower electric margins.

Electric MarginsElectric margins and MWh sales for WPL for the three months ended Sep. 30 were as follows (in thousands):

 Revenues and Costs MWhs Sold
 
 2004 2003Change2004 2003Change
 
Residential $90,931  $96,298 (6%)892  973 (8%)
Commercial 52,328  51,179 2%605  604 -- 
Industrial 73,716  70,931 4%1,259  1,200 5%
 
 
 
   Total from retail customers 216,975  218,408 (1%)2,756  2,777 (1%)
Sales for resale 34,723  48,161 (28%)942  1,179 (20%)
Other 6,129  5,344 15%16  19 (16%)
 
 
 
   Total revenues/sales 257,827  271,913 (5%)3,714  3,975 (7%)
 
 
Electric production fuel and 
   purchased-power expense 116,649  112,202 4%
 
 
   Margin $141,178  $159,711 (12%)
 
 

39

Electric margins and MWh sales for WPL for the nine months ended Sep. 30 were as follows (in thousands):

 Revenues and Costs MWhs Sold
 
 2004 2003Change2004 2003Change
 
Residential $250,555  $243,382 3%2,560  2,619 (2%)
Commercial 137,626  130,372 6%1,673  1,650 1%
Industrial 199,022  182,295 9%3,577  3,411 5%
 
 
 
   Total from retail customers 587,203  556,049 6%7,810  7,680 2%
Sales for resale 108,775  121,568 (11%)2,872  3,144 (9%)
Other 16,198  16,384 (1%)61  60 2%
 
 
 
   Total revenues/sales 712,176  694,001 3%10,743  10,884 (1%)
 
 
Electric production fuel and 
   purchased-power expense 326,397  320,456 2%
 
 
   Margin $385,779  $373,545 3%
 
 

Electric margins decreased $18.5 million, or 12%, and increased $12.2 million, or 3%, for the three- and nine-month periods, respectively. The three-month decrease was primarily due to higher purchased-power capacity costs and the timing of rate collection of these costs, the impact of extremely mild weather conditions in the third quarter of 2004 and lower energy conservation revenues. These items were partially offset by the impact of rate increases, lower fuel and purchased-power energy costs and weather-normalized sales growth including increased industrial sales which reflect improving economic conditions in WPL’s service territory. Cooling degree days in Madison were 44% below normal in the third quarter of 2004. Alliant Energy estimates that the extremely mild weather conditions during the third quarter of 2004 reduced electric margins by approximately $9 million to $10 million. By comparison, the impact of weather on the third quarter of 2003 results was not significant. The nine-month increase was primarily due to the implementation of rate increases in 2003 and 2004, the weather-normalized sales growth and lower fuel and purchased-power energy costs, partially offset by milder weather conditions in the third quarter of 2004, lower energy conservation revenues and the impact of implementing seasonal rates in 2003. Weather also had a modest downward impact on electric margins for the first six months of the year in 2004 and 2003. The reduced energy conservation revenues were largely offset by lower energy conservation expenses. Refer to “Alliant Energy Results of Operations” for further discussion of the higher purchased-power capacity costs for the third quarter of 2004 and seasonal electric rates.

Gas Margins Gas margins and Dth sales for WPL for the three months ended Sep. 30 were as follows (in thousands):

 Revenues and Costs Dths Sold
 
 2004 2003Change2004 2003Change
 
Residential $10,911  $9,510 15%754  670 13%
Commercial 7,355  5,997 23%794  690 15%
Industrial 573  731 (22%)166  99 68%
Transportation/other 5,689  17,633 (68%)3,426  5,196 (34%)
 
 
 
   Total revenues/sales 24,528  33,871 (28%)5,140  6,655 (23%)
 
 
Cost of gas sold 12,437  22,132 (44%)
 
 
   Margin $12,091  $11,739 3%
 
 

Gas margins and Dth sales for WPL for the nine months ended Sep. 30 were as follows (in thousands):

 Revenues and Costs Dths Sold
 
 2004 2003Change2004 2003Change
 
Residential $92,487  $98,885 (6%)8,669  8,943 (3%)
Commercial 50,804  54,256 (6%)5,850  5,961 (2%)
Industrial 5,486  7,026 (22%)795  820 (3%)
Transportation/other 25,183  40,635 (38%)12,527  14,919 (16%)
 
 
 
   Total revenues/sales 173,960  200,802 (13%)27,841  30,643 (9%)
 
 
Cost of gas sold 112,282  141,208 (20%)
 
 
   Margin $61,678  $59,594 3%
 
 

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Gas margin increased $2.1 million, or 3%, for the nine-month period, primarily due to improved results of $4 million from WPL’s performance-based commodity cost recovery program (benefits are shared by ratepayers and shareowners), partially offset by lower sales due to milder weather conditions in 2004 compared to 2003. Transportation/other sales decreased for the three- and nine-month periods due to reduced demand from natural gas-fired electric generating facilities during the third quarter of 2004, primarily due to lower electricity demand as a result of the extremely mild weather conditions. The impact of these sales decreases on gas margins was not significant.

Refer to “Rates and Regulatory Matters” for discussion of WPL’s electric and gas rate filings.

Other RevenuesOther revenues decreased $9.4 million and $15.8 million for the three- and nine-month periods, respectively, primarily due to lower construction management revenues from WindConnect™, resulting from uncertainty during the nine months ended Sep. 30, 2004 regarding the extension of the federal renewable energy production tax credit, and lower water revenues due to the 2003 sale of the water utility serving the Beloit area. These decreases were largely offset by lower operating expenses. The federal renewable energy production tax credit was extended in the fourth quarter of 2004 for generating facilities placed in service prior to Jan. 1, 2006.

Other Operating Expenses Other operation and maintenance expenses decreased $5.1 million and $16.9 million for the three- and nine-month periods, respectively, primarily due to lower expenses for WindConnect™ and decreases in energy conservation expenses, partially offset by increases in employee and retiree benefits (comprised of compensation, medical and pension costs). The nine-month decrease was also impacted by a planned refueling outage at Kewaunee in the second quarter of 2003 (there was no such outage in 2004). Also contributing to the three- and nine-month decreases was the impact of comprehensive cost-control and operational efficiency efforts. Depreciation and amortization decreased $0.8 million and $2.5 million for the three- and nine-month periods, respectively, primarily due to lower software amortizations, partially offset by property additions. Taxes other than income taxes increased $1.2 million and $4.4 million for the three- and nine-month periods, respectively, primarily due to increased gross receipts taxes.

Interest Expense and Other Interest expense decreased $0.8 million and $4.6 million for the three- and nine-month periods, respectively, primarily due to lower average borrowings.

Income TaxesThe effective income tax rates were 39.1% and 38.7% for the three- and nine-month periods ended Sep. 30, 2004, respectively, compared with 36.6% and 35.9%, respectively, for the same periods last year. The increase for the three-and nine-month periods was due to a reduction in research and development tax credits. The increase for the nine-month period was also due to a decrease in the Alliant Energy tax benefit allocated to WPL pursuant to the provisions of PUHCA.

LIQUIDITY AND CAPITAL RESOURCES

Cash Flows for the Nine-Month PeriodsSelected information from Alliant Energy’s, IPL’s and WPL’s respective Condensed Consolidated Statements of Cash Flows for the nine months ended Sep. 30 was as follows (in thousands):

 Alliant Energy IPL WPL
 
Cash flows from (used for):2004 20032004 20032004 2003
 
Operating activities $314,671   $198,006 $216,694   $207,296 $180,447   $35,247 
Financing activities 93,697   189,048 58,121   188,752 (35,555 ) 50,396 
Investing activities (465,349 ) (352,391)(276,818 ) (402,061)(143,331 ) (90,461)

Alliant Energy’s cash flows from operating activities increased $117 million, primarily due to the timing of collections of receivables, changes in the level of accounts receivable sold and higher net income at IPL and WPL, partially offset by higher pension plan contributions and the timing of tax payments; cash flows from financing activities decreased $95 million, primarily due to lower proceeds from common stock issuances, partially offset by changes in the amount of debt issued and retired; and cash flows used for investing activities increased $113 million, primarily due to proceeds received from the sale of Alliant Energy’s Australian business in April 2003, partially offset by the 2003 acquisition by Resources of a 309 MW, non-regulated, tolled, natural gas-fired power plant in Neenah, Wisconsin, and other decreases in non-regulated construction and acquisition expenditures. IPL’s cash flows from financing activities decreased $131 million, primarily due to changes in the amount of debt issued and retired and the issuance of preferred stock in September 2003; and cash flows used for investing activities decreased $125 million, primarily due to lower construction and acquisition expenditures associated with the construction of Emery. WPL’s cash flows from operating activities increased $145 million, primarily due to higher net income, changes in the level of accounts receivable sold and the timing of collections of receivables; cash flows used for financing activities increased $86 million due to a $200 million capital contribution from Alliant Energy in 2003 and higher common stock dividends, partially offset by net changes in the amount of debt issued and retired; and cash flows used for investing activities increased $53 million, primarily due to increased levels of construction and acquisition expenditures.

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Certain Regulatory Approvals/Requirements PUHCA In September 2004, Alliant Energy, Resources and IPL filed for SEC approval under an Omnibus Financing Order for their ongoing program of external financing, credit support arrangements and other related proposals for the period through Dec. 31, 2007. Alliant Energy expects a new order will be in place before the current order expires on Dec. 31, 2004.

Alliant Energy is subject to a PUHCA requirement whereby Alliant Energy’s common equity balance must be at least 30% of its total consolidated capitalization, including short-term debt. Alliant Energy’s common equity ratio as of Sep. 30, 2004, as computed under this requirement, was 48%.

State Regulatory Agencies — In March 2004, IPL received the necessary regulatory authorization to increase short-term borrowings from $250 million to $300 million. In March 2004, WPL discontinued its utility customer accounts receivable sale program, increasing its short-term borrowing authority granted by the PSCW to $240 million, $185 million for general corporate purposes and an additional $55 million should WPL repurchase its variable rate demand bonds.

Shelf Registrations In 2004, Alliant Energy, IPL and WPL each filed separate shelf registrations with the SEC. Alliant Energy’s shelf registration allows Alliant Energy flexibility to offer from time to time up to an aggregate of $300 million of common stock, stock purchase contracts and stock purchase units. IPL’s shelf registration allows IPL flexibility to offer from time to time up to an aggregate of $210 million of preferred stock, senior unsecured debt securities and collateral trust bonds. WPL’s shelf registration allows WPL flexibility to offer from time to time up to an aggregate of $150 million of its preferred stock, senior unsecured debt securities and first mortgage bonds. Alliant Energy, IPL and WPL had $208 million, $85 million and $50 million remaining available under their respective shelf registrations as of Sep. 30, 2004.

Cash and Temporary Cash Investments As of Sep. 30, 2004, Alliant Energy and its subsidiaries had approximately $184 million of cash and temporary cash investments, of which approximately $73 million consisted of deposits in foreign bank accounts. Alliant Energy has elected permanent reinvestment of earnings for federal income tax purposes for certain foreign subsidiaries within its China business platform. Alliant Energy is currently reviewing its opportunities to repatriate cash from its International businesses given the new tax benefits under the American Jobs Creation Act passed in October 2004. Refer to “Other Matters — Other Future Considerations” for additional information.

Sale of Accounts Receivable Refer to Note 11 of Alliant Energy’s “Notes to Condensed Consolidated Financial Statements” for information on WPL’s discontinuance of participation in the utility customer accounts receivable sale program and a reduction in the maximum amount of receivables that can be sold in the program.

Short-term Debt — Information regarding commercial paper at Sep. 30, 2004 was as follows (dollars in millions):

 AlliantParent  
Commercial paper:EnergyCompanyIPLWPL
 
   Amount outstanding $21.0 $-- $21.0 $-- 
   Weighted average maturity 1 day N/A 1 day N/A 
   Discount rates 1.95% N/A 1.95% N/A 
   Available capacity under facilities 
     in effect at Sep. 30, 2004 (*) $619.0 $100.0 $279.0 $240.0 
(*)     WPL’s capacity is limited to $240 million due to a PSCW regulatory restriction.

In July 2004, Alliant Energy completed the syndication of three revolving credit facilities totaling $650 million ($100 million for Alliant Energy at the parent company level, $300 million for IPL and $250 million for WPL), which support commercial paper and are available for direct borrowings. The combined total amount of the new facilities remains the same as the former facilities. However, $100 million of the borrowing capability has been shifted from the parent company to IPL and WPL to support the continued focus on the domestic utility business as the primary source of future capital needs. The facility at the parent company is used to fund Resources and Corporate Services as well as its own needs. These new facilities replaced the former facilities which were to expire in September 2004. These new facilities are designed to be five-year facilities with the length of the facilities subject to various state and federal regulatory approvals given the term is longer than a 364-day facility. The credit facility agreements contain various covenants, including the following:

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 CovenantStatus at
Covenant DescriptionRequirementSep. 30, 2004

Alliant Energy:  
   Consolidated debt-to-capital ratioLess than 65%48%
   EBITDA interest coverage ratio (*)At least 2.5x4.0x
IPL debt-to-capital ratioLess than 58%46%
WPL debt-to-capital ratioLess than 58%32%
(*)In compliance with the agreement, results of discontinued operations have been included in this covenant calculation.

The cross default provisions, negative pledge provisions and material adverse change clauses of the new credit facilities are less restrictive than those of the former credit facilities. Alliant Energy’s, IPL’s and WPL’s new credit facilities contain provisions that require, during the term of the facilities, any proceeds from asset sales, with certain exclusions, in excess of 20% of their respective consolidated assets be used to reduce commitments under their respective facilities. Exclusions include, among others, certain sale and lease-back transactions and any potential sales of Alliant Energy’s nuclear, transmission or international assets.

Long-term Debt In October 2004, Resources’ wholly-owned New Zealand subsidiary issued NZ$100 million of non-recourse redeemable preference shares due 2007, secured by its investment in TrustPower Ltd., to take advantage of the strength of the New Zealand currency. Holders of the redeemable preference shares will receive semi-annual cash dividends of approximately NZ$3.4 million. Given their characteristics, the redeemable preference shares will be shown as “Long-term debt, net (excluding current portion)” on Alliant Energy’s Consolidated Balance Sheet. The majority of the approximately US$68 million of proceeds from this transaction has been repatriated to Resources, with no income tax implications, and will be used for general corporate purposes or further debt reduction at Resources.

In August 2004, WPL issued $100 million of 6.25% senior debentures due 2034 and used the proceeds to repay short-term debt, including $62 million incurred in connection with the repayment at maturity of 7.25% first mortgage bonds in June 2004, and for general corporate purposes. IPL issued $25 million and $100 million of 6.30% senior debentures due 2034 in August 2004 and May 2004, respectively, and used the proceeds to repay short-term debt primarily incurred in the construction of Emery and for general corporate purposes. All of this long-term debt was issued under WPL’s and IPL’s respective shelf registrations discussed previously. In October 2004, Resources retired $7.0 million of its 7.375% senior notes; in August 2004, Resources retired $15.0 million of its 7% senior notes; and in February 2004, Resources retired $10.0 million of its 9.75% senior notes and $9.5 million of its 7% senior notes. Resources incurred a total of approximately $0.05 per share of debt repayment premiums and charges for the unamortized debt expenses related to these debt retirements.

Common Equity In connection with Alliant Energy’s 2004 shelf registration discussed previously, Alliant Energy entered into a sales agreement with Cantor Fitzgerald & Co., under which Alliant Energy may sell from time to time up to 7.5 million shares of its common stock. During 2004, Alliant Energy issued approximately 3.6 million shares of new common stock and received approximately $90 million in net proceeds under this shelf registration and sales agreement. Alliant Energy announced in October 2004 that it has completed its common stock issuances for 2004 under this program. Alliant Energy intends to continue to issue modest amounts of equity through both its Shareowner Direct Plan and 401(k) Savings Plan, which totaled approximately $18 million for the nine months ended Sep. 30, 2004.

In October 2004, Alliant Energy announced an increase in its quarterly common stock dividend from $0.25 per share to $0.2625 per share, which is equivalent to an annual rate of $1.05 per share, beginning with the Nov. 15, 2004 dividend payment.

Credit Ratings In May 2004, Standard & Poor’s Rating Services lowered WPL’s secured long-term debt rating from A to A- to align it with WPL’s corporate/issuer credit rating.

Off-Balance Sheet Arrangements A summary of Alliant Energy’s off-balance sheet arrangements is included in the combined Form 10-K filed by Alliant Energy, IPL and WPL for the year ended Dec. 31, 2003 and has not changed materially from the items reported in the 2003 Form 10-K. Refer to Note 8 of Alliant Energy’s “Notes to Condensed Consolidated Financial Statements” for the impact of FIN 46R guidance on Alliant Energy’s tolling and purchased-power agreements.

Contractual ObligationsA summary of Alliant Energy’s, IPL’s and WPL’s contractual obligations is included in the combined Form 10-K filed by Alliant Energy, IPL and WPL for the year ended Dec. 31, 2003 and has not changed materially from the items reported in the 2003 Form 10-K, except for the items described in Note 15 of the “Notes to Condensed Consolidated Financial Statements.”

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EnvironmentalA summary of Alliant Energy’s environmental matters is included in the combined Form 10-K filed by Alliant Energy, IPL and WPL for the year ended Dec. 31, 2003 and has not changed materially from the items reported in the 2003 Form 10-K, except as described below.

Air Quality — WPL previously responded confidentially to multiple data requests from the U.S. Environmental Protection Agency (EPA) related to the historical operation and associated air permitting for certain major Wisconsin coal-fired generating units. In September 2004, WPL was notified by the EPA that a third party had requested WPL’s response materials. After review of such records, WPL determined that the information would no longer be claimed as confidential. There have been instances where citizen groups have pursued claims against utilities for alleged air permitting violations. WPL has not received any such actions to date and is unable to predict the outcome.

The Wisconsin Department of Natural Resources independently developed mercury control rules, which became effective in October 2004 for Wisconsin generating facilities, that cap emissions beginning in 2008, followed by subsequent reductions of 40% by 2010 and 75% by 2015. The Wisconsin mercury rule requirements will be superseded by federal mercury emissions standards when published. WPL has begun fuel sampling and will conduct stack testing in 2005 to support the compliance requirements for Wisconsin mercury rules. Alliant Energy continues to closely monitor the developments at the federal level related to mercury emissions standards and believes that required capital investments and/or modifications resulting from these rules could be significant.

Water Quality — The EPA regulation under the Clean Water Act referred to as “316(b)” became effective in September 2004. This regulation requires existing large power plants with cooling water intake structures to apply technology to minimize adverse environmental impacts to fish and other aquatic life. Alliant Energy is currently studying such impacts and will have compliance plans in place by the required date of January 2008. Alliant Energy is currently investigating compliance options and is unable to predict the final outcome, but believes that required capital investments and/or modifications resulting from this regulation could be significant.

In October 2004, FERC issued an order lifting a delay of its previously issued order regarding one of WPL’s hydroelectric project licenses to require WPL to develop a detailed engineering and biological evaluation of potential fish passage alternatives within one year and to install within three years agency-approved fish-protective devices and fish passages. Accordingly, these provisions are now effective and WPL is in the process of working with the appropriate federal and state agencies to comply with these provisions. WPL and state agencies are currently researching solutions and at this time WPL is unable to predict the final outcome but believes that required capital investments and/or modifications resulting from this issue could be significant.

Alliant Energy would expect to receive the appropriate rate recovery of any prudently incurred expenditures it may incur on these and other environmental initiatives within its domestic utility business.

OTHER MATTERS

Market Risk Sensitive Instruments and Positions Alliant Energy’s primary market risk exposures are associated with interest rates, commodity prices, equity prices and currency exchange rates. Alliant Energy has risk management policies to monitor and assist in controlling these market risks and uses derivative instruments to manage some of the exposures. A summary of Alliant Energy’s market risks is included in Alliant Energy’s, IPL’s and WPL’s combined Form 10-K for the year ended Dec. 31, 2003 and has not changed materially from those reported in the 2003 Form 10-K, except as described below.

Commodity Risk — Non-trading — Refer to “Other Future Considerations — China” for discussion of higher than anticipated coal and other related costs in China.

Accounting Pronouncements As of March 31, 2004, Alliant Energy adopted FIN 46R guidance. Refer to Note 8 of Alliant Energy’s “Notes to Condensed Consolidated Financial Statements” for additional information.

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In December 2003, the President signed into law the Medicare Prescription Drug, Improvement and Modernization Act of 2003 (the Act). The Act introduces a prescription drug benefit under Medicare Part D, as well as a federal subsidy to sponsors of retiree health care benefit plans, that provide a benefit that is at least actuarially equivalent to Medicare Part D. In the second quarter of 2004, the FASB issued, and Alliant Energy elected early adoption of, FSP 106-2, which supersedes FSP 106-1. Refer to Note 10 of Alliant Energy’s, IPL’s and WPL’s “Notes to Condensed Consolidated Financial Statements” for additional information.

Critical Accounting Policies A summary of Alliant Energy’s critical accounting policies is included in Alliant Energy’s, IPL’s and WPL’s combined Form 10-K for the year ended Dec. 31, 2003 and has not changed materially from the items reported in the 2003 10-K. Refer to Note 7 of Alliant Energy’s “Notes to Condensed Consolidated Financial Statements” for information regarding a goodwill impairment charge recorded in the second quarter of 2004.

Other Future Considerations A summary of Alliant Energy’s, IPL’s and WPL’s other future considerations is included in the combined Form 10-K filed by Alliant Energy, IPL and WPL for the year ended Dec. 31, 2003 and has not changed materially from the items reported in the 2003 Form 10-K, except as described below. In addition to items discussed earlier in MD&A, the following items could impact Alliant Energy’s future financial condition or results of operations:

Mexico — At Sep. 30, 2004, Resources held a secured loan receivable of approximately $82 million from an unrelated Mexican development company. The loan proceeds were used by the development company to construct substantially all the infrastructure for the initial phase of a master-planned resort community known as Laguna del Mar located near Puerto Penasco, State of Sonora, on the Sea of Cortez in Mexico. Alliant Energy has been concerned about the Mexican development company’s ability to timely complete all phases of the project, market and sell the real estate, and otherwise meet all of its obligations under the loan documents. As a result, Resources evaluated its alternatives and concluded that a negotiated transfer of ownership and control of the project to Resources was the best course of action for Resources to maximize the ultimate recovery of its loan and related interest income. In September 2004, Resources successfully completed negotiations and entered into a stock purchase agreement to acquire ownership of the project and all related assets, subject to the transferors’ compliance with certain conditions precedent. The proposed acquisition price for concluding the transfer is not significant. If these conditions are satisfied and the transfer of ownership and control of the project is consummated, which is expected to occur in the fourth quarter of 2004, Resources will continue to evaluate various alternatives related to the continued development of the resort community as well as its options related to the potential sale or sales of the project and its assets. Effective Jan. 1, 2004, Resources ceased accruing interest income related to this loan pending resolution of this matter. If the development of the project and related real estate sales are not ultimately successfully executed, it is possible that Alliant Energy could incur material asset valuation charges in the future. Alliant Energy is unable to predict the ultimate outcome of this matter.

Brazil — To complete earlier plans, the Juiz de Fora facility, a joint venture gas-fired generating facility in which Alliant Energy holds a 50% direct ownership interest, is scheduled for a 20 MW expansion from a single-cycle to a combined-cycle facility in early 2006 at an estimated cost of $26 million. However, initiation of the expansion construction is experiencing delays due to disputes with Alliant Energy’s Brazilian partner regarding the financing and construction of the Juiz de Fora facility and other matters (as mentioned below). Alliant Energy is currently discussing with its partner resolution of these matters including, but not limited to, arbitration, settlement or the possible sale of the facility. If the Juiz de Fora combined-cycle construction is not completed as anticipated, the future performance obligations of this generation asset might be significantly adversely affected. In such an event, Alliant Energy is not required to invest any additional capital in Juiz de Fora; however, it could lead to material asset valuation or other charges with respect to Alliant Energy’s investment in the Juiz de Fora facility. Alliant Energy’s direct investment in the Juiz de Fora facility at Sep. 30, 2004 was approximately $17 million.

Alliant Energy continues to closely monitor the financial performance of its Brazilian investments. While such performance improved significantly in 2003, it has been relatively flat in 2004 compared to 2003. Alliant Energy believes such performance can be improved, particularly in regard to controlling costs and reduction of debt, and this and Alliant Energy’s rights as a minority shareowner have been a source of ongoing dispute with its Brazilian partners. In particular, Alliant Energy’s Brazilian partners used company funds to pay dividends in order to ensure their control over the operations. Alliant Energy is not interested in and has not sought control of the operations. However, Alliant Energy has urged that, to the extent funds are available, they would be better used to pay down debt.

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Alliant Energy has been and continues to explore with various parties, including its existing Brazilian partners, all of the options available to it concerning its investments in Brazil. Among others, these options include the potential to repair Alliant Energy’s relationship with its partners, restructure the relationship or exit this market. Alliant Energy will consider the full range of options potentially available, although experience demonstrates that accomplishment of any of the considered options will take time. Consequently, Alliant Energy is unable to provide any assurances that one or more of the options under review will occur, or that implementation of any one or more of the options will not result in Alliant Energy incurring a material charge relating to its investments in Brazil as it cannot currently predict the ultimate outcome of these reviews and discussions.

China —The generating plants included in Alliant Energy’s China portfolio are currently experiencing higher than anticipated coal and related transportation costs due primarily to government reforms and coal allocations, rapid economic expansion in China and infrastructure bottlenecks. Alliant Energy has achieved some success in mitigating, and continues to work to mitigate, the impact of these cost increases through working with local and provincial Chinese authorities to increase the supply of lower-cost coal, gain access to long-term contracts and to enable the recovery of higher costs through tariffs. In addition, Alliant Energy is examining other ways to offset these cost increases within its operations. However, most of these efforts in China require government interaction, which is less formal and predictable than general fuel-related cost recovery processes experienced within the U.S. domestic utility industry. If the price of coal and related transportation costs were to increase (decrease) 10% compared to the average prices experienced during the 12 months ended Sep. 30, 2004, Alliant Energy’s pre-tax income for the 12 months ended Sep. 30, 2005 would (decrease) increase by approximately $6 million.

In addition to applying pressure on the margins currently being realized from Alliant Energy’s China operations, these cost pressures could impact the estimated fair value of Alliant Energy’s China investments. Alliant Energy has $10 million of goodwill related to its China investments on its balance sheet and if the fair value of these investments does not exceed their carrying value (including goodwill) in the future, Alliant Energy may be required to record an impairment charge related to this goodwill balance. Alliant Energy is currently unable to predict the future of these costs in China or provide assurances that its efforts to mitigate the impact of any cost increases will be successful.

Synfuel — Alliant Energy is an investor in a synthetic fuel facility. The Internal Revenue Service audited this facility to determine, among other issues, if the tax credits claimed have met the tests outlined in the Internal Revenue Code. The audit was substantially completed in the third quarter of 2004 with no significant impact to Alliant Energy’s financial condition or results of operations.

American Jobs Creation Act —In October 2004, the American Jobs Creation Act (the Act) was passed which includes changes to several provisions of the Internal Revenue Code.  The key changes that may impact Alliant Energy include, but are not limited to, a temporary dividends received deduction for foreign earnings repatriated during 2004 and 2005, future tax relief for domestic manufacturers (including electric production activities) and an extension of certain renewable energy production tax credits for generating facilities placed in service prior to Jan. 1, 2006. Alliant Energy is currently analyzing the impacts of the Act, including reviewing opportunities to repatriate cash from certain of its International businesses during 2004 and 2005 to gain the benefits of the temporary dividends received deduction.  If Alliant Energy elects to repatriate certain foreign earnings that were previously expected to be reinvested indefinitely, it will incur tax expense at the time such election is made given Alliant Energy has not previously recorded U.S. tax provisions related to these earnings. Alliant Energy does not currently anticipate that this tax expense would have a material adverse effect on its financial condition or results of operations. Any potential utility business tax benefits realized as a result of this legislation would be subject to all appropriate regulatory reviews.


ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Quantitative and Qualitative Disclosures About Market Risk are reported under Item 2 MD&A “Other Matters — Market Risk Sensitive Instruments and Positions.”


ITEM 4. CONTROLS AND PROCEDURES

Alliant Energy’s, IPL’s and WPL’s management evaluated, with the participation of each of Alliant Energy’s, IPL’s and WPL’s Chief Executive Officer (CEO), Chief Financial Officer (CFO) and Disclosure Committee, the effectiveness of the design and operation of Alliant Energy’s, IPL’s and WPL’s disclosure controls and procedures as of the end of the quarter ended Sep. 30, 2004 pursuant to the requirements of the Securities Exchange Act of 1934, as amended. Based on their evaluation, the CEO and the CFO concluded that Alliant Energy’s, IPL’s and WPL’s disclosure controls and procedures were effective as of the end of the quarter ended Sep. 30, 2004.

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There was no change in Alliant Energy’s, IPL’s and WPL’s internal control over financial reporting that occurred during the quarter ended Sep. 30, 2004 that has materially affected, or is reasonably likely to materially affect, Alliant Energy’s, IPL’s or WPL’s internal control over financial reporting.

PART II — OTHER INFORMATION

ITEM 6. EXHIBITS

The following Exhibits are filed herewith.

10.1   Form of Non-qualified Stock Option Agreement pursuant to the Alliant Energy 2002 Equity Incentive Plan (EIP)
10.2   Form of Restricted Stock Agreement pursuant to the Alliant Energy EIP
10.3   Form of Performance Share Grant pursuant to the Alliant Energy EIP
31.1   Certification of the Chairman and CEO for Alliant Energy
31.2   Certification of the Senior Executive Vice President and CFO for Alliant Energy
31.3   Certification of the Chairman and CEO for IPL
31.4   Certification of the CFO for IPL
31.5   Certification of the Chairman and CEO for WPL
31.6   Certification of the CFO for WPL
32.1   Written Statement of the CEO and CFO Pursuant to 18 U.S.C.§1350 for Alliant Energy
32.2   Written Statement of the CEO and CFO Pursuant to 18 U.S.C.§1350 for IPL
32.3   Written Statement of the CEO and CFO Pursuant to 18 U.S.C.§1350 for WPL

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, Alliant Energy Corporation, Interstate Power and Light Company and Wisconsin Power and Light Company have each duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized on the 5th day of November 2004.

ALLIANT ENERGY CORPORATION  
Registrant
   
By: /s/ John E. Kratchmer Vice President-Controller and Chief Accounting Officer
John E. Kratchmer    (Principal Accounting Officer and Authorized Signatory)
   
   
INTERSTATE POWER AND LIGHT COMPANY
Registrant
   
By: /s/ John E. Kratchmer Vice President-Controller and Chief Accounting Officer
John E. Kratchmer    (Principal Accounting Officer and Authorized Signatory)
   
   
WISCONSIN POWER AND LIGHT COMPANY
Registrant
   
By: /s/ John E. Kratchmer Vice President-Controller and Chief Accounting Officer
John E. Kratchmer    (Principal Accounting Officer and Authorized Signatory)

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