E.ON SE operates as an energy company in Germany, the United Kingdom, Sweden, the Netherlands, rest of Europe, and internationally. The company operates through Energy Networks, Energy Infrastructure Solutions, and Energy Retail segments. The Energy Networks segment operates power and gas distribution networks; and offers maintenance, repair, and related services for its power and gas networks. Its Energy Infrastructure Solutions provides integrated and sustainable energy solutions for cities, municipalities, and industrial and commercial customers comprising district heating and cooling; heat, steam, and electricity services; embedded solutions; products and services that enhance energy efficiency. This segment also installs smart energy meters, block-type thermal power stations, photovoltaic systems, air-conditioning systems, and heat pumps. Its Energy Retail segment supplies power and gas; installs customer connections and connects renewable energy generating stations to the grid; and offers a range of green power and green gas, and sustainable solutions that enhance energy efficiency for residential, small and medium-sized enterprises, commercial and industrial, and sales partners. It also provides digital solutions; biogas and biomethane products; and compressed natural gas refueling services, as well as solar and battery storage systems, heating systems, and charging infrastructure for electric vehicle. E.ON SE was founded in 1923 and is headquartered in Essen, Germany.