Solar power plant to be built on Lake Lei dam

Lake Lei is located almost entirely on Italian territory. Only the dam is on Swiss soil. © Keystone / Gian Ehrenzeller

A large alpine solar power plant is to be installed on the dam wall of Lake Lei near Ferrera in southeastern Switzerland. The 1,800 square-metre plant is being built by the Zurich Electricity Company.

This content was published on August 11, 2022 minutes

Located at an altitude of 1,930 metres, the plant will comprise more than 1,000 solar units with a total output of 350 kilowatts, equivalent to the consumption of 160 households. The construction costs are estimated at CHF800,000 ($850,000). Initial operation is scheduled for the end of September.

Installing the solar panels on Thursday © Keystone / Gian Ehrenzeller

Lake Lei is located almost entirely on Italian territory. Only the dam, which has a height of 141 metres, is located on Swiss soil.

This is the second large-scale solar installation built by the Zurich Electricity Company on a dam. The other was commissioned in 2020 on the Albigna dam, also in canton Graubünden.

The largest alpine solar power plant in Switzerland is on the Lake Mutt dam in canton Glarus. It covers an area of 10,000 square metres and has a capacity of 2.2 megawatts.

The first photovoltaic plant in Europe was commissioned in 1982 near Lugano in southern Switzerland. The TISO (Ticino Solare) is still in operation and has an output of 10 kilowatts.

In compliance with the JTI standards

In compliance with the JTI standards

More: SWI certified by the Journalism Trust Initiative

Contributions under this article have been turned off. You can find an overview of ongoing debates with our journalists here. Please join us!

If you want to start a conversation about a topic raised in this article or want to report factual errors, email us at

Share this story

Change your password

Do you really want to delete your profile?