Oñatiko Ur Jauziak is a company in which the Oñati Town Council in Gipuzkoa (90%) and the Ente Vasco de la Energía (10%) participate. In 1925, the Ente Vasco de la Energía (10%) established a monopoly on the electricity supply service. Electricity was supplied through a trading company (Oñargi S.L) and marketed through Mercaoña S.A. They have three hydroelectric power stations: Olaran Erreka y Urdantegietea since 1915 and Olate since 1988.
Oñati, España Gipuzkoa, Basque Country