Central Switzerland’s first alpine solar plant goes online

The Sidenplangg solar plant has fed electricity into the grid for the first time. The plant at an altitude of 1800 to 2000 meters is the first in Central Switzerland. It is already generating 13% of the planned electricity and is due to be completed by the end of 2028. It was initiated by energieUri.

Spiringen UR, November 2025

energieUri has connected the first alpine solar plant in Central Switzerland to the grid on the Sidenplangg in the municipality of Spiringen, according to a press release. The plant at an altitude of 1,800 to 2,000 meters is set to generate 12.5 gigawatt hours of electricity per year with a total output of 8 megawatts when fully expanded. Almost half of this will be produced in winter.

The plant currently supplies 13 percent of the planned electricity. This qualifies it for funding under the Solarexpress program. Work is due to resume in spring and be completed by the end of 2028.

APV Sidenplangg AG is owned by the Uri-based energy supplier energieUri AG as the initiator and aventron AG, based in Münchenstein BL. “Such power plant projects create and secure highly qualified jobs in the region – be it in the planning, realization or future operation and energy management by energieUri,” says Werner Jauch. CEO of energieUri and Chairman of the Board of Directors of APV Sidenplangg AG, is quoted in the press release.

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