Red Eléctrica de España, S.A.U

Red Eléctrica Corporación SA is a multinational business group of Spanish origin that operates in the international electricity market as an operator of the electricity system. Its most important subsidiary, Red Eléctrica de España operates in the Spanish electricity market and accounts for 93% of the group's revenues (2017). Its mission, as system operator, is to ensure the correct operation of the electrical supply system and to guarantee the continuity and security of the electrical power supply at all times.

https://www.ree.es/es