RWE AG is a holding company, which engages in the generation, transmission, distribution, and trading of electricity and gas. It operates through the following segments: Lignite & Nuclear, European Power, Supply & Trading, and innogy. The Lignite & Nuclear segment covers electricity generation in Germany using lignite and nuclear power. The European Power segment comprises the electricity generation business in Germany, the U.K., the Netherlands, and Belgium using gas and hard coal power plants. The Supply & Trading segment concentrates on trading in electricity, natural gas, coal, oil, carbon dioxide certificates, and biomass. The innogy segment focuses on renewable energy, distribution networks, and retail. The company was founded in 1898 and is headquartered in Essen, Germany.