sentences:  Currently geothermal power heats 89% of the houses in Iceland, and over 54% of the primary energy used in Iceland comes from geothermal sources.Geothermal power is used for many things in Iceland.57.4% of the energy is used for space heat, 25% is used for electricity, and the remaining amount is used in many miscellaneous areas such as swimming pools, fish farms, and greenhouses.