Finså power station is situated at Tonstad in Sirdal Municipality.
Finså power station lies in Sirdal Municipality in Vest-Agder. The municipality has a population of 1 831, and covers an area of 1 554 km², approximately 11% of which is water. Finså is one of seven power stations in the municipality.
The power station makes use of the drop from Bjørnestadvatnet down to Sirdalsvannet.
Bjørnestadvatnet is dammed to an elevation of between 353 and 338 m a.s.l.
Wikipedia, Agder Energi’s own data.