Renewable resources can be used to produce renewable energy than can be used by people, like electricity and heat.
99.9% of earth’s energy comes from the sun. A lot of energy is direct solar energy, but also wind and hydraulic energy come from the sun. Hydraulic energy exists because the heat of the sun and wind work together to move water from low lying to elevated areas. The biomass that may be used as bio-fuel exists due to the photosynthesis process. The energy that comes from the wind exists because the sun’s energy heats different regions in different ways.