As of April 2025 Hydro One has a market cap of €19.41 Billion. This makes Hydro One the world's 910th 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 Apr 2nd, 2025 the market cap of Hydro One was reported to be: