Stausee Ferden

The reservoir Ferden is a reservoir of Lonza in Loetschental. It is located at about 1300 m above sea level between the two towns Ferden and Goppenstein in the canton of Valais and belongs to the municipality Ferden.

Weather damage

A triggered by heavy snow avalanche in February 1999 had indeed left no direct damage to the dam, but vulnerable on the air side of the drain. In addition, the access gallery was badly damaged. Through a storm in 2011 the electricity had to be stopped and the turbines to be replaced.

Power plant Loetschen

The reservoir is part of the power plant Loetschen the power plant Loetschen AG. For this next to the lake is the center for power generation. There, an average energy production of 330 GWh per year are obtained at a electrical power of 110 MW by two Pelton turbines with 500 U / min with a design flow of 21.5 m³ / sec.