As of December 2025 Talen Energy has a market cap of โน1.562 Trillion. This makes Talen Energy the world's 1258th 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 28th, 2025 the market cap of Talen Energy was reported to be: