Endesa. 

Endesa, S.A. is a major energy corporation primarily engaged in the production, distribution, and retail sale of electricity, predominantly operating within Spain and Portugal. The company's power generation capacity is diverse, utilizing sources such as hydroelectric, nuclear, thermal, wind, and solar energy. As of December 31, 2021, Endesa supplied electricity to approximately 21 million customers, serving an expansive area covering around 195,794 square kilometers. Its extensive network infrastructure for distribution and transmission spans 316,506 kilometers. Beyond its core operations, Endesa also markets energy and offers various commercial services related to energy. Its activities further encompass the installation, maintenance, and repair of domestic electrical systems, heating, and air conditioning units, alongside engaging in energy trading and investment holding. The company extends its reach by supplying electricity and gas to other European nations, including Germany, France, and the Netherlands. Endesa is also involved in forward-looking sectors like electric mobility, demand-side management, and energy storage solutions. Its broader enterprise includes the extraction of primary energy resources, providing industrial services in areas such as telecommunications, water, and gas, and operating electricity transmission networks. Additionally, it manages and operates nuclear power plants, issues debt instruments, and offers both consultancy and civil engineering services. Founded in 1944, the company was initially known as Empresa Nacional de Electricidad, S.A. before rebranding to Endesa, S.A. in June 1997. Its corporate headquarters are situated in Madrid, Spain, and it functions as a subsidiary of ENEL Iberia, S.L.U.