Geothermal energy is thermal energy generated and stored in the Earth. Thermal energy is the energy that determines the temperature of matter. The geothermal energy of the Earth's crust originates from the original formation of the planet and from radioactive decay of materials. GEOTHERMAL, ENERGY, soil, under, hot, heat, biomass, energy, wood, power, plant, renewable, fuel, bio, industry, vector, electricity, pellets, green, factory, icon, gas, biogas, environment, ecology, geothermal, energy, power, heat, plant, pump, iceland, heating, green, water, station, renewable, steam, environment, hot, industry, alternative, technology, nature, source, diagram, electricity, ground, pipe, landscape, building, house, ecology, volcanic, vector, volcano, geyser, thermal, industrial, sky, natural
