The geothermal heat flux from the Earth 's interior is estimated to be 47 terawatts. This comes to 0.087 watt / square metre, which represents only 0.027 % of Earth 's total energy budget at the surface, which is dominated by 173,000 terawatts of incoming solar radiation.
where does geothermal energy come from sunlight the oceans the land inside earth wind
the Earth 's interior