Z’Mutt is a pumping station located in Canton Valais, Switzerland, and feeds water into the main reservoir of the Grande Dixence hydroelectric scheme. Originally commissioned in 1964, Z’Mutt has a total pumping capacity of 88 MW across five existing pumps. During XFLEX HYDRO, one unit will be replaced with a new 5 MW variable speed reversible pump-turbine which, when installed with modern power electronics and smart controls, will demonstrate a high range of flexibility.
View our video about the Z’Mutt project.
During the project, the flexibility technologies will be trialled at 7 demonstration sites. These are located at existing European hydropower stations. Each XFLEX HYDRO demonstration site will test a different technological configuration, installed together with the Smart Power Plant Supervisor in every case.
Vogelgrun is a 142 MW run-of-river hydropower plant in France, situated near the border with Germany along the river Rhine.
Alto Lindoso is a 630 MW hydropower plant situated on the Lima river in Portugal. Caniçada is a 70 MW hydropower plant located in northern Portugal
Alqueva is a pumped storage scheme in southern Portugal that was built in two phases, Alqueva I and II, now totalling 520 MW.
Sitting in the French Alps, Grand'Maison is Europe’s largest pumped storage plant at 1,800 MW capacity.