Qorlortorsuaq Dam

Qorlortorsuaq Dam is a hydroelectric dam near Qorlortorsuaq in the Nanortalik district of the Kujalleq municipality in southern Greenland. It has a capacity of 7.2 MW and it generates power for the neighbouring towns of Qaqortoq and Narsaq.

Qorlortorsuaq Dam
Location of Qorlortorsuaq Dam in Greenland
CountryGreenland
Coordinates60°46′45.90″N 45°14′27.27″W
StatusOperational
Construction began2003
Opening date2007
Owner(s)Nukissiorfiit
Dam and spillways
Type of damGravity
Height15 m (49 ft)
Length80 m (262 ft)
Spillway capacity3.9 m3/s (138 cu ft/s)
Reservoir
Total capacity108,000,000 m3 (88,000 acre⋅ft)
Surface area2.4–5.1 km2 (0.9–2.0 sq mi)
Coordinates60°46′33.98″N 45°14′13.19″W
Operator(s)Landsvirkjun
Turbines2 x 3.8 MW
Installed capacity7.6 MW
Annual generation27 GWh

History

The construction of the power plant started in December 2003 and was completed in October 2007.[1] It was built by consortium of E. Pihl & Son AS (51%), YIT (34%), and Landsvirkjun (15%). Landsvirkjun operates the power plant until 2012, when operation will be transferred to the Kujalleq municipality.[2] The design and engineering was performed by Icelandic companies Verkís and Efla.[3]

Description

Qorlortorsuaq Dam is a concrete gravity dam with height of 15 metres (49 ft) and crest length of 80 metres (260 ft). It creates a reservoir with a capacity of 108 million cubic meters.[4] Its tunnel length is 245 metres (804 ft) and pressure pipe is 245 metres (804 ft).[1] The flow rate is 3.9 cubic metres per second (140 cu ft/s).[3]

The power plant as two horizontal axis Francis turbines manufactured by Kössler with a total installed capacity of 7.6 MW. Its annual generation is 27 GWh.[4] A crew of four maintains the power plant.

Together with the power plant a 70 kilometres (43 mi) long high voltage (70 kV) line to Qaqortoq and Narsaq was erected.[4][5] It passes the Igaliko Fjord, a more than 2 km long span, approximate between these two pylons: 60.812446°N 45.661606°W / 60.812446; -45.661606 (Pylon 1) and 60.777958°N 45.595286°W / 60.777958; -45.595286 (Pylon 2).

Green Power program

The hydropower plant is part of the plan of the Greenland Home Rule government to replace fossil fuelled energy production and storage with sustainable power production. [6]

References
  1. "Hydro Power Plant Qorlortorsuaq, Greenland" (PDF). ÍSTAK Ltd. Retrieved 2008-02-16.
  2. "Ny stor spændende ordre: Vandkraftværk Qorlortorsuaq, Grønland" [New large exciting order: Qorlortorsuaq Hydroelectric Plant, Greenland] (Press release) (in Danish). YIT Denmark. 2004-01-06. Retrieved 2011-02-13.
  3. "Qorlortorsuaq — Hydroelectric Project". Verkís. Retrieved 2011-02-13.
  4. "Small Hydroelectric, Qorlortorsuaq". Mannvit Engineering. Retrieved 2011-02-13.
  5. "Flight Information". Narsarsuaq Airport. Retrieved 2013-05-31. Caution. Powerlines has been established.
  6. "Greenland opens hydrogen plant for renewable energy storage". Renewable Energy Focus. Retrieved 2011-02-15.
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