Muttsee

Muttsee is a reservoir in the Canton of Glarus, Switzerland, with a surface area of 42 ha (100 acres). It is used as the upper reservoir in the 1 GW pumped-storage hydroelectricity Linth–Limmern Power Stations.

Key Information

Muttsee
Muttsee Show map of Canton of Glarus Muttsee Show map of Canton of Graubünden Muttsee Show map of Switzerland Muttsee Show map of Alps
Location	Linthal, Glarus
Coordinates	46°51′49″N 9°1′38″E / 46.86361°N 9.02722°E / 46.86361; 9.02722
Type	natural, reservoir
Primary outflows	Limmernsee
Basin countries	Switzerland
Surface area	42 ha (100 acres)
Water volume	0.025 km3 (0.0060 cu mi)
Surface elevation	2,446 m (8,025 ft)
Location
Interactive map of Muttsee
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The 2.4 km high altitude permits a 2.2 MW solar farm to supply 3.3 GWh per year,^[1] more than average power, even in winter (as the high altitude prevents fog formation, and as the snow reflects the sunlight onto the solar panels). The 6,000 photovoltaic panels were installed on the containment wall of the artificial basin in 2021, covering approximately 10,000 square meters of concrete, and stretching over almost 1 km.^[2]

1. ^ "Switzerland's 2.2-MW alpine solar farm fully operating". Renewablesnow.com. 1 September 2022.
2. ^ "Axpo receives permit to build 2-MW vertical solar plant on Muttsee Dam". 8 April 2020.

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