Power from the sun

1. Power from the sun comes to the Earth as heat and light. This heat and light are the effect of the Sun's constant nuclear fusion of hydrogen nuclei. The process of fusion produces helium nuclei along with large amounts of energy. This energy is expressed as electromagnetic radiation (light is a specific frequency range of this radiation) as well as radiated temperatures of more than 6,100 degrees C. Only a small fraction of these extreme levels of energy that are released by the Sun come into contact with the Earth.