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Renewable energy

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Renewable energy is derived from natural processes that are replenished at a rate that is equal to or faster than the rate at which they are consumed. There are various forms of renewable energy that are derived directly or indirectly from the sun or from heat generated deep within the earth. Renewable energy is generated from sources such as solar, wind, geothermal, hydropower and ocean resources, solid biomass, biogas, and liquid biofuels. However, biomass is a renewable resource only if its rate of consumption does not exceed its rate of regeneration.