| Renewable Sources
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Non-renewable Sources
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| These energy sources are virtually inexhaustible and can be replenished after their use by natural process
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These energy sources are exhaustible and cannot be replenished once used
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| They are mainly biomass based sources
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They are developed over a long period due to physical , chemical and biological actions below the earth surface
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| They are available in unlimited amount in nature
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They are available in limited amount in nature
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| They included solar, wind, water, geothermal ,ocean and biomass energy
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They include fossil fuels like coal, oil, natural gas and nuclear power
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