Harsprånget hydroelectric power station

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Harsprånget
Harspranget.jpg
Harsprånget hydroelectric power station is located in Sweden
Harsprånget hydroelectric power station
Location of Harsprånget in Sweden
Country Sweden
Location South of Porjus
Coordinates 66°57′15″N 19°48′53″E / 66.95417°N 19.81472°E / 66.95417; 19.81472Coordinates: 66°57′15″N 19°48′53″E / 66.95417°N 19.81472°E / 66.95417; 19.81472
Status Operational
Construction began 1918 Cancelled 1921
Restarted 1945
Opening date 1951
Owner(s) Vattenfall
Dam and spillways
Type of dam Rock-fill dam
Impounds Lule River
Height 50 m (164 ft)
Length 1,400 m (4,600 ft)
Dam volume 6,000,000 m3 (210,000,000 cu ft)
Reservoir
Creates Harsprånget Reservoir
Power Station
Type Conventional
Hydraulic head 107 M
Turbines 3*110 MW, 1*180 MW, 1*465 MW, All of Francis-type
Installed capacity 977 MW
Annual generation 2,1 TWh (2009)

Harsprånget is a hydroelectric power station located on the Lule River in northern Sweden, just downstream of Porjus.

With a power of 977 MW,[1] it's the largest hydroelectric power station in Sweden, and also the fourth largest in the Nordic countries. The name means "Hare run" in Swedish. This was also the name of the mighty rapids there, and the name was related to the sharp turns in the rapids, a little similar to the ones a hare does when fleeing. Normal year production is around 2131 GWh. Total fall height is around 107 m.

History[edit]

Construction of the station started in 1918. However, recession after World War I cancelled the construction, which was not started again before 1945. It was opened in 1951, then with a power of 330 MW. In 1980, two new turbines were installed which increased the max power to 945 MW. The rated power was later increased further.

Turbines[edit]

The turbines are of Francis type with vertical axis and steel spirals.
Units 1 2 3 4 5
Capacity 110 MW 110 MW 110 MW 180 MW 475 MW
Maximum water flow 127 m³/s 127 m³/s 127 m³/s 175 m³/s 485 m³/s
Revolutions/min 166,7 r/min 166,7 r/min 166,7 r/min 166,7 r/min 107,1 r/min
Cog diameter 3,6 m 3,6 m 3,6 m 4,2 m 6,6 m
Supplier NOHAB NOHAB NOHAB KMW NOHAB

Grand total of 977 MW.

References[edit]