MGE Energy, Inc. engages in the provision of natural gases and electric services. It operates through the following segments: Regulated Electric Utility Operations, Regulated Gas Utility Operations, Non-Regulated Energy Operations, Transmission Investments, and All Other. The Regulated Electric Utility Operations segment involves generating, purchasing, and distributing electricity. The Regulated Gas Utility Operations segment includes purchasing and distributing natural gas. The Non-Regulated Energy Operations segment offers owning and leasing electric generating capacity. The Transmission Investments segment represents investment in American Transmission Company LLC, a company engaged in the business of providing electric transmission services primarily in Wisconsin. The All Other segment invests in companies and property that relate to the regulated operations and financing the regulated operations. The company was founded in 2001 and is headquartered in Madison, WI.