Geothermal Energy

Geothermal energy is thermal energy generated and stored in the Earth. The geothermal energy of the Earth's crust originates from the original formation of the planet. Geothermal is location specific i.e. a resource must exist. Access to the resource is gained by drilling and getting access to steam or hot water. Geothermal is a base-load renewable energy resources.

What are the benefits of using geothermal energy?

  • Renewable

    Through proper reservoir management, the rate of energy extraction can be balanced with a reservoir's natural heat recharge rate.

  • Baseload

    Geothermal power plants produce electricity consistently, running 24 hours per day / 7 days per week, regardless of weather conditions.

  • Domestic

    Geothermal resources can be harnessed for power production without importing fuel.

  • Small Footprint

    Geothermal power plants are compact; using less land per GWh (404 m2) than coal (3642 m2) wind (1335 m2) or solar PV with center station (3237 m2)

  • Clean

    Modern closed-loop geothermal power plants emit no greenhouse gasses; life cycle GHG emissions (50 g CO2 eq/kWhe) are four times less than solar PV, and six to 20 times lower than natural gas.

Frequently asked questions

For more information please contact The Renewable Energy Cluster,

% Usage

Geothermal (heat)

Based on 35.482 TJ

A breakdown of the usage of geothermal energy produced in Iceland. The greatest potential for development is in connection to greenhouses and growing food locally therefore reducing the CO2 and improving quality of selected vegetables & fruits.

Thermal Energy

by Source

Based on 35.482 TJ

Almost all building in Iceland are connected to a district heating system. 97% of thermal energy comes from geothermal sources. The 3% is made with electricity from hydro-power plants. There are around 200 district heating systems in Iceland.