Renewable Energy is normally defined as any energy resource’s that can be naturally renew or regenerated over a short time and which is directly derived from the sun (solar energy),indirectly from sun such as wind energy, hydropower energy, bioenergy ,or from other mechanisms of natural resources (geothermal energy, tidal energy). Renewable energy only includes energy derived from organic and natural resources it doesn’t include inorganic resources. REN21 is an energy policy network that brings government and non-governmental organisation together and other organisations to learn from one another and build successes in advance renewable energy. Renewable energy which is replaced by a natural process as the rate of process is faster than the rate which is consumed. Renewable energy is energy that is generated from natural processes that are continuously replenished. This includes sunlight, geothermal heat, wind energy, tides, water, and various forms of biomass. This energy cannot be exhausted and is constantly renewed. Biomass is a renewable organic matter, and can include biological material derived from living, or recently living organisms, such as wood, waste, and alcohol fuels.