As of September 2026 TransAlta has a market cap of โน367.71 Billion. This makes TransAlta the world's 3699th 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 Sep 16th, 2026 the market cap of TransAlta was reported to be: