Leirelva power plant

Småkraft operates two power plants in Leirskardalen, Tverråga and Leirelva power plant. These two power plants produce a total of 23.5 GWh, which corresponds to the consumption of approximately 1,200 households a year. There are two separate intakes. One in Leirelva and one in Tverråga. Both have their own pipe gate down to a common power station building.

The intake in the Leirelva river is a typical gravity dam, with ductile iron pipes buried along its entire length of approx. 2,150 m. Of this, 1,000 m is a shared trench with Tverråga. The pipeline runs in a side-sloped and landslide-prone area, which meant that special considerations had to be taken during the construction process, both in terms of the extent of the intervention and weather conditions.

Fjellbygg AS has been the contractor for building and construction in Leirskardalen. The waterway equipment was supplied by Br.Dahl and Spetals Verk AS supplied all electromechanical equipment.

Technical data

Rainfall field

14,9 km²

Minimum water flow

Summer: 50 l/s

Intake elevation

395,0 m

Power station elevation

135,0 m

Drop height

260,0 m

Production

14,4 GWh
This corresponds to electricity for 900 households.