Mainova AG operates as an energy service provider in Germany. It operates through Electricity Supply; Gas Supply; Generation and District Heating; Renewable Energy/Energy Services; Water Supply; Investments; and Other Activities segments. The company generates and supplies electricity and heat using thermal, wind, solar, and biomass power plants; and PV business, contracting, and energy services. It is also involved in the supply of gas and water, as well as street lighting business. The company was founded in 1828 and is based in Frankfurt am Main, Germany. Mainova AG operates as a subsidiary of Stadtwerke Frankfurt Am Main Holding Gmbh.