Sils is a 248MW hydro power project. It is located on Sil river/basin in Graubunden, Switzerland. The project is currently active. It has been developed in single phase.

Project Type Total Capacity (MW) Active Capacity (MW) Pipeline Capacity (MW) Project Status Project Location Project Developer
Hydropower 248 248 Active Graubunden, Switzerland Kraftwerke Hinterrhein


The project was developed by Kraftwerke Hinterrhein. The project is currently owned by Edison with a stake of 20%, Axpo Power with a stake of 19.5%, Alpiq EcoPower with a stake of 9.28%, BKW with a stake of 7.72%, Repower with a stake of 6.5%, IWB Renewable Power with a stake of 2.5% and Kraftwerke Hinterrhein.

The hydro reservoir capacity is 200 million cubic meter. The net head of the project is 413m. The project generated 646 GWh of electricity.

Contractors Involved

Alstom Grid was selected to render EPC services for the hydro power project.

Voith Hydro Holding was selected as the turbine supplier for the hydro power project. The company provided 4 units of francis turbines, each with 62MW nameplate capacity.

Voith Hydro Holding supplied 4 electric generators for the project.

About Kraftwerke Hinterrhein

Kraftwerke Hinterrhein AG (Kraftwerke Hinterrhein) is a power generation company that produces and distributes electricity. The company operates the hydro power plant combination in the canton of Grisons. Its processes water for the plants of KHR is taken at catchment area from runoff in water catchments, reservoirs, catch basin, and balancing reservoir, among others. Kraftwerke Hinterrhein operates through dams such as Valle di Lei reservoir, balancing reservoir Ferrera, dam Sufers and balancing reservoir Barenburg. The company developed project with a head storage in the Italian Valle di Lei. Kraftwerke Hinterrhein is headquartered in Thusis, Switzerland.


All power projects included in this report are drawn from GlobalData’s Power Intelligence Center. The information regarding the project parameters is sourced through secondary information sources such as electric utilities, equipment manufacturers, developers, project proponent’s – news, deals and financial reporting, regulatory body, associations, government planning reports and publications. Wherever needed the information is further validated through primary from various stakeholders across the power value chain and professionals from leading players within the power sector.