As of December 2025 Talen Energy has a market cap of ยฃ12.23 Billion. This makes Talen Energy the world's 1316th 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 9th, 2025 the market cap of Talen Energy was reported to be: