Pipelines run through the Svartsengi Power Station where superheated water is vented from the ground near a lava flow and used to run turbines that generate electricity. After going through the turbines, the steam and hot water passes through a heat exchanger to provide heat for a municipal hot water heating system. Then the water is fed into a geothermal spa called the Blue Lagoon (a popular tourist attraction) for recreational and medicinal users to bathe in.