Harsprånget hydroelectric power station

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

Harsprånget
Harsprånget hydroelectric power station is located in Sweden
Harsprånget hydroelectric power station
Location of Harsprånget in Sweden
CountrySweden
LocationSouth of Porjus
Coordinates66°57′15″N 19°48′53″E / 66.95417°N 19.81472°E / 66.95417; 19.81472
StatusOperational
Construction began1918 Cancelled 1921
Restarted 1945
Opening date1951
Owner(s)Vattenfall
Dam and spillways
Type of damRock-fill dam
ImpoundsLule River
Height50 m (164 ft)
Length1,400 m (4,600 ft)
Dam volume6,000,000 m3 (210,000,000 cu ft)
Reservoir
CreatesHarsprånget Reservoir
Power Station
TypeConventional
Hydraulic head107 M
Turbines3*110 MW, 1*180 MW, 1*465 MW, All of Francis-type
Installed capacity977 MW
Annual generation2,1 TWh (2009)

With a power of 977 MW,[1] it is 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

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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

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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

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  1. ^ "Harsprånget". Vattenfall. Archived from the original on 23 October 2014. Retrieved 13 June 2023.