The 15 MW Sisimiut hydropower project in western Greenland, north of the town Sisimiut, involves harnessing the outflow of a natural lake by blasting a headrace tunnel into the bottom of the lake and thus creating a reservoir.

The 15 MW Sisimiut hydropower project in western Greenland, north of the town Sisimiut, involves harnessing the outflow of a natural lake by blasting a headrace tunnel into the bottom of the lake and thus creating a reservoir. The headrace tunnel is 4.1 km long and feeds a 420 m long pressure tunnel to an underground powerhouse, housing two Francis units, each being 7.5 MW. The harnessed head is 79 m and the design flow is 22 m3/s.

From a GIS substation, a 26 km long 66 kV transmission line transfers the power to Sisimiut. The services include assistance during commissioning, recommendations in regard to improvements of operation systems, setting up maintenance and operation program, training of operators and directions of operations during the one year guarantee period. Completed in 2011.