Obervermuntwerk II is a 360MW hydro power project. It is located on Silvretta river/basin in Vorarlberg, Austria. The project is currently active. It has been developed in single phase. The project construction commenced in 2014 and subsequently entered into commercial operation in 2018.

Project Type Total Capacity (MW) Active Capacity (MW) Pipeline Capacity (MW) Project Status Project Location Project Developer
Hydropower 360 360 Active Vorarlberg, Austria Vorarlberger Illwerke


The project was developed by Vorarlberger Illwerke. The project is currently owned by EnBW Energie Baden-Wurttemberg with a stake of 50% and Vorarlberger Illwerke.

Obervermuntwerk II is a pumped storage project. The gross head and net head of the project are 311m and 291m respectively. The project cost is $553m.

Development Status

The project construction commenced in 2014 and subsequently entered into commercial operation in 2018.

Contractors Involved

Andritz Hydro was selected as the turbine supplier for the hydro power project. The company provided 2 units of francis turbines, each with 180MW nameplate capacity.

GE Renewable Energy supplied 2 electric generators for the project.

About Vorarlberger Illwerke

Vorarlberger Illwerke AG (Vorarlberger Illwerke) is a producer of peak and control energy. The company operates hydroelectric power plants such as Kopswerk I, Kopswerk II, Latschauwerk, Lunerseewerk, Obervermuntwerk I, Rifawerk, Rodundwerk I, Rodundwerk II, Vermuntwerk, Rellswerk and Walgauwerk. It also operates alpine storage and pumped storage power plants such as the Obere lll. Vorarlberger Illwerke owns and operates 380 kV, 220 kV and 110 kV power plant direct lines and switchgear and substations. The company serves residential, commercial and industrial customers across Austria. Vorarlberger Illwerke is headquartered in Bregenz, Austria.


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.