2 was built in 1980 and it produces, with its three thermal energy exchange systems 225 L/s (3 x 75 L/s) of hot water and 75 MW (3 x 25 MW) energy. Energy Plant 3, with its 6 MW counter-pressure steam turbines, is especially used for producing electricity. Each second 40 kg of steam passes through the turbines with 5 bar pressure. Energy Plant 4, with its seven 1.2 MW Isopentan Ormat turbines, was built in 1989-1992 to produce energy with hot excess steam and low pressure steam from the other energy plants. Energy Plant 5 was built in 1999 to substitute the old energy plant 1 and to increase the energy and hot water, so the demand could be met. It produces with its 30 MW turbines and 75 MW thermal energy exchange system, around 225 GWh per annum. Energy Plant 6 is a condenser plant with unique high pressure steam turbines and a total capacity of 30 MW. It produces only electricity, which depends on the using of the district heating and the electrical use. See also Geothermal power in Iceland List of largest power stations in the world Renewable energy in Iceland List of power stations in Iceland References External links Official website Technology explanation Geothermal power stations in Iceland Reykjanes Buildings and structures in Keflavík Reykjanes Volcanic Belt