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Switzerland’s Mauvoisin dam turns Alpine glacier meltwater into 943 million kWh of clean electricity a year

By OCT 30, 2025 7:50 AM 3 MIN READ
Switzerland clean Credits: Matteo Catanese
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In the Pennine Alps in Switzerland, a great power is found. Switzerland has an energy source that can produce 943 million kWh a year, out of water. This water starts out as snowflakes. It is then eventually used to create clean energy once the snowflakes melt. It is quite the thing.

How snow is being used in Switzerland to make clean energy

The idea is simple. Snowflakes melt and make water, which can then be used to create clean energy. Switzerland has a lot of snow, so why not use it in this way? Sounds a lot like the thinking of a country like Switzerland. The plan, as always, is to lower carbon emissions. This energy project is a good way of doing that.

Near a village in Bagnes, Switzerland, are using a resource they have plenty of. Snow. The Mauvoisin Dam holds water from glaciers. Snow is trapped around this dam, and streams see the melting ice find its way into the dam. This is then used to make electricity, clean energy for a nation known to take things like that seriously.

How glaciers of snow help make clean electricity in Switzerland

The glaciers in this area feed the dam with a steady supply of meltwater, which is a strong advantage. There will always be water there, behind a wall that is 250 meters high. It is one of the tallest dams you will find in Europe. There is a lot of power in the water it holds. It might look like a simple dam, but the glaciers make it special. Their waters trickle into it slowly over time.

Pressure builds behind the wall, and turbines below the dam transport the electricity to where it needs to go. Water is stored in the reservoir behind the dam and released through large pipes that go down the mountain. The water drops down these pipes at great speed and with lots of force. This water hits turbines that are connected to big generators. The water hitting those turbines turns kinetic energy into electricity.

943 million kilowatt-hours are generated by this dam in Switzerland

There are a few of these turbines at the Mauvoisin power plant. They produce 943 million kilowatt-hours of power. Clean power at that. This can supply around 300,000 households. The plant is also silent; only the sound of water and the hum of turbines can be heard as it gets to work providing clean power. The design was made to last for decades to ensure power supply.

The dam was first worked on in 1951 and finished by 1957. The design allows the water to push the wall against the mountain because of the curvy arch structure of it. It can flex a bit but remain solid even when the dam is full. The reservoir holds about 200 million cubic meters of water.

Maintaining a dam like this is no easy job

Maintaining this dam is something that happens all through the year. Inspections are done on the face, gates, and spillways. Sensors track pressure, temperature, and the concrete. All this is done to keep the operation safe and running the way it should. This dam is large but works well with what is around it. Using the glaciers the way it does is truly remarkable, and the kind of thinking the world has come to expect from a country like Switzerland.

Switzerland’s energy experts pride themselves on the Mauvoisin power plant and the 943 million kilowatt-hours of clean power it produces. It uses nature in a peaceful way to serve an important need to a country that is known for clean living.

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Phumlani S.Staff Writer