Ljusnan

In Sweden, the Ljusnan river's source flow starts in the mountains northwest of Ramundberget on the Norwegian border. Together with its biggest tributary, Voxnan, Ljusnan is Sweden's sixth biggest producer of hydropower. The total utilised river to sea height drop is 570 m.

River system Ljusnan

River system Ljusnan

In Ljusnan's catchment area Fortum has 23 wholly owned or part-owned hydropower plants. The river is 430 km long and the area of its catchment area is 19,830 km². Lossen is a big lake and a storage reservoir. Lossen and Grundsjön are the big annual storage reservoirs for Ljusnan.

Svegsjön came into being in 1975 through damming. With its area of 60 km² it is Härjedalen's biggest lake and one of the biggest artificial lakes in Europe, and it acts as a reservoir for Sveg power plant. Krokströmmen power plant is the biggest on Ljusnan in terms of energy, whilst together the two power plants in Långå have the biggest output. The catchment area also includes the following smaller power plants: Edeforsen, Viksjöfors and Lenninge.

Hydro power plant Stream Installed capacity (MW) Normal annual production (GWh) Year of Comm. Fortum's share (%)
Långa G1 Lossen Ljusnan 62.0 191.7 1973 100
Långa G2 Mittån Ljusnan 94.0 214.9 1973 100
Halvfari Ljusnan 24.0 76.1 1978 100
Sveg Ljusnan 36.0 148.6 1975 80
Byarforsen Ljusnan 16.0 85.0 1975 80
Krokströmmen Ljusnan 103.0 522.5 1952 91.3
Långströmmen Ljusnan 55.0 264.9 1961 89
Storåströmmen Ljusnan 25.0 144.1 1962 100
Öjeforsen Ljusnan 27.0 156.0 1967 100
Laforsen Ljusnan 57.0 331.5 1953 100
Edeforsen Ljusnan 0.6 5.2 1989 100
Norränge Ljusnan 50.0 234.8 1964 100
Lottefors Ljusnan 13.6 67.7 1958 100
Dönje Ljusnan 72.0 390.0 1953 100
Viksjöfors Flaxnan 2.3 7.0 1961 100
Alfta (Malvik) Voxnan 32.0 140.0 1945 100
Sunnerstaholm Voxnan 6.0 35.0 1942 100
Lenninge Voxnan 2.7 15.0 1982 100
Landafors Ljusnan 11.2 65.0 1976 100
Bergvik Ljusnan 16.2 107.0 1961 100
Höljebro Ljusnan 38.0 220.0 1967/2001 100
Ljusneströmmar Ljusnan 36.4 252.7 1986 92.6
Ljusnefors Ljusnan 14.5 97.0 1976 100