As of December 2025 MGE Energy has a market cap of โน258.07 Billion. This makes MGE Energy the world's 4003th 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 MGE Energy was reported to be: