n 2011, geothermal energy provided about 65 percent of primary energy, the share of hydropower was 20 percent, and the share of fossil fuels (mainly oil products for the transport sector) was 15 percent.[1] In 2013, Iceland also became a producer of wind energy.[2]
The main use of geothermal energy is for space heating with the heat being distributed to buildings through extensive district-heating systems.[1] About 85% of all houses in Iceland are heated with geothermal energy.[3]