Most of the hydropower plants are owned by Landsvirkjun, the National Power Company, Landsvirkjun currently has 16 power stations, of which 13 are hydro-power stations, two geothermal power stations and one a natural-gas-fired station. Krafla and Bjarnarflag are geothermal power stations. Blanda, Burfell, Fljotsdalur, Hrauneyjafoss, Laxa, Sigal-da, Sog and Sultartangiand Vatnsfell are all hydropower stations. Straumsvik is the natural-gas fired station. It will be the largest power station in Iceland and will provide 690 MW of power to the Alcoa aluminium plant in Rey-oarfjorour.