As of December 2025 Talen Energy has a market cap of NZ$27.66 Billion. This makes Talen Energy the world's 1329th most valuable company by market cap according to our data. The market capitalization, commonly called market cap, is the total market value of a publicly traded company's outstanding shares and is commonly used to measure how much a company is worth.
On Dec 10th, 2025 the market cap of Talen Energy was reported to be: