Bern/Baden (energate) - Building permits for new hydropower plants are a rarity in Switzerland. However, two such permits were announced on 1. January. One of them: the Grimsel 4 pumped storage power plant of Kraftwerke Oberhasli AG (KWO), which is worth millions and has a planned capacity of 150 MW. He had just received the news today that KWO had received the building permit for Grimsel 4, said BKW CEO Robert Itschner at the Swiss Electricity Congress in Bern.