Biofuels and Bioenergy

Renewable Energy

Renewable energy is defined as an energy resource that can be naturally replenished or regenerated over a short period of time and is derived directly or indirectly from the sun, wind, hydropower, bioenergy, or other natural resource systems (geothermal energy, tidal energy). The natural processes that generate renewable energy are continually renewed. Examples include sunlight, fire, wind energy, tides, water, and many forms of biomass. This energy never runs out and is supplied on a regular basis.