Armasuisse builds alpine small wind solar plant in Surselva
In the Surselva region, construction of a combined test facility for the use of wind and solar energy for alpine electricity generation will begin in August. The project is being realised by armasuisse Real Estate with partners from business and research.
Armasuisse Immobilien, part of the Federal Department of Defence, Civil Protection and Sport(DDPS), is testing with partners from Swiss industry and research how wind and sun can be used in the Alpine region to generate electricity locally. According to a media release, the construction permit for a test facility at the La Stadera site in the Surselva region in the canton of Graubünden has been granted. Construction work will begin in August and the test plant is scheduled to go into operation in autumn 2024.
The plant combines the generation of electricity through the use of wind energy and the use of solar radiation through photovoltaics. The test facility consists of a small wind turbine and bifacial (double-sided) photovoltaic modules that will be combined. The project was approved as part of the military plan approval procedure, the Federal Council‘s statement said. The wind turbine will be installed from August 2023. The photovoltaic modules arranged around the wind turbine will follow by autumn 2024 and complete the test facility.
By the end of 2025, the test facility should provide data so that the efficiency of the new type of construction can be estimated more precisely. The expected energy yield is around 60 megawatt hours per year. According to the statement, this corresponds to the electricity consumption of around 15 Swiss households. The evaluation of the data by the end of 2025 will form the basis for the decision on whether to implement a final expansion with a total of nine small wind solar plants at the site.
A solar prototype already installed in La Stadera by the Swiss system supplier Turn2Sun from La Sagne NE has already been successfully supplying electricity since winter. The solar prototype is also equipped with double-sided photovoltaic modules.