Kraftwerke Oberhasli AG (KWO founded 1925) is a Swiss company operating several hydroelectric plants in Oberhasli Canton of Berne. Founded in 1925 the company had its first power plant Handeck 1 online by 1932. Currently KWO is operating nine plants fed by the reservoirs of Grimselsee Oberaarsee Räterichsbodensee Gelmersee and Totensee with a total of 26 turbines yielding 1.1 GW or about 12% of Switzerland's total electricity consumption.