Endesa S.A. is a Spanish power holding, part of the multinational group Enel since 2009. It owns and operates electric power generation, distribution, transmission and trading assets located mainly in Spain, Portugal and Morocco. The company owns 174 power plants, and operates a 317,675km distribution and transmission network supplying electricity to more than 11 million customers. Endesa is also engaged in secondary activities including natural gas transportation and distribution, coal mining, exploration and asset management. Incorporated in 1944, the company is headquartered in the city of Madrid.