Case Study
The world’s largest power converter for variable speed pumped hydropower, Grimsel 2, Switzerland
Grimsel 2, Switzerland The world’s largest power converter for variable speed pumped hydropower Upper lake of the pumped storage power plant Grimsel 2 in Switzerland Oberhasli Hydroelectric Company Kraftwerke Oberhasli AG (KWO), one of the leading hydro electric companies in Switzerland, operates 26 units in nine power plants with eight storage lakes spread over the Grimsel and Susten regions in the Swiss Alps. KWO provides on average about