In the framework of new feed-in-tariff system in Switzerland for Small Hydropower Plants (SHP), aim SmallFLEX project, led by HES-SO Valais and performed collaboration with EPFL, WSL, EAWAG, PVE, FMV, is to show how SHP can provide winter peak energy ancillary services, whilst remaining eco-compatible. The pilot demonstrator site selected small hydropower plant Gletsch-Oberwald (KWGO) owned FMV...