World Power Plants

Fionnay (Mauvoisin)140 MW Hydroelectric

HydroRenewable

Fionnay (Mauvoisin) ranks 19th among Switzerland's 168 power generation facilities, showcasing its notable capacity of 140 MW in a country renowned for its hydroelectric resources. Commissioned in 1958, this hydro plant contributes 1.05% to Switzerland's total capacity of 13,281 MW, a significant figure given the dominance of hydroelectric power in the Swiss energy profile. With a hydro rank of 15th out of 162 hydro plants, Fionnay is a vital player in the nation’s energy landscape, characterized by its reliance on renewable energy sources. The facility employs advanced hydroelectric technology that harnesses the power of flowing water to generate electricity, ensuring a sustainable energy supply while minimizing environmental impact. The regional context surrounding Fionnay is rich in hydroelectric potential, with nearby plants such as Bieudron (1285 MW), Nendaz (392 MW), and the Fionnay (Dixence) facility (306 MW) further solidifying the area's reputation as a hub for hydro power generation. This proximity to larger plants enhances grid stability and reliability, allowing for efficient energy distribution across the region. Switzerland's commitment to renewable energy sources is reflected in Fionnay's operational significance and integration into the national grid. As one of the pioneers in hydroelectric power generation, Fionnay exemplifies the country's long-standing tradition of harnessing natural resources for energy. Looking ahead, the importance of Fionnay and its fellow hydro plants is expected to grow, particularly as Switzerland continues to prioritize sustainable energy solutions in response to global climate challenges.

Capacity
140 MW
Commissioning Year
1958

68 years old

Owner
Energie Ouest Suisse (EOS)
Location
46.1573°, 7.2092°

Switzerland, Europe

Context & rankings
  • 19. largest of 168 plants in Switzerland
  • #8,685 worldwide by installed capacity
  • #1,845 of 8,493 Hydroelectric plants worldwide
  • 1.05% of the installed capacity of Switzerland
Age & fleet comparison

68 years in operation

Hydroelectric fleet average: 42.1 years

Operator portfolio

Energie Ouest Suisse (EOS) operates 1 plants totalling 140 MW

Regional density

92 plants within 100 km, 7,963 MW combined

Nearest plant: Riddes (2 km)

Data provenance

Location

Coordinates:: 46.157300, 7.209200
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Carbon Footprint

Zero Direct Emissions

Fionnay (Mauvoisin) is a hydro power plant producing approximately 491 GWh of clean electricity per year with zero direct CO₂ emissions during operation.

Lifecycle emissions: ~24 g CO₂/kWh (manufacturing, transport, decommissioning)

Technical Details

Primary Fuel Type
Hydro
Energy Source
Renewable
Country
Switzerland
Continent
Europe
Data Source
Global Power Plant Database

SwitzerlandEnergy Profile

168
Total Plants
13.3 GW
Total Capacity
HydroNuclearSolar
Top Fuels

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