Survey of Energy Resources 2007
Hydropower Country Notes
Norway possesses Western Europe's largest hydro resources, both in terms of its current installed capacity and of its economically feasible potential. Hydropower & Dams World Atlas 2006 reported a gross theoretical capability of 560 TWh/yr, of which 187 TWh was economically exploitable. The hydro generating capacity installed by the end of 2005 had an output capability equivalent to about two-thirds of the economic potential. Actual hydro output in 2005 was around 136 000 TWh, providing virtually all of Norway's electric power.
Two major HPPs were under construction at end-2005: Nit Tying (168 MW) and Over Otta (171 MW). A further 859 MW was licenced for development.
The economically exploitable capability applicable to small-scale hydro schemes was reported to be 9 TWh/yr, equivalent to 5% of the overall level. Installed capacity of small hydro plants totalled about 1 000 MW at end-2005 with an average annual output capability of 5 TWh.