Companies disestablished in 1992

Iberduero (IBEX 35: IBE) was a Spanish company, dedicated to the generation and distribution of electricity, founded in Bilbao in 1944, as a result of the merger of Hidroeléctrica Ibérica and Saltos del Duero. Listed on the Madrid Stock Exchange, it was one of the leading Spanish companies in the electricity sector, and in 1992 it merged, through a takeover bid, with Hidroeléctrica Española to create Iberdrola, one of the five most important companies in the sector worldwide.