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| Energy |
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| Fuel wood, agricultural waste and cow dung (gobar), form the major sources of energy for rural India and most of the urban Indian population consumes energy from coal, petroleum, natural gas (CNG), hydel power (hydroelectricity), sun, wind and nuclear power. At present, India produces 97,800 MW of energy from different sources. |
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| Most of the energy, which we use, is derived directly or indirectly from the sun. |
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| Non-renewable or Conventional Energy Resources |
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| Resources which are in limited amounts and cannot be renewed are called non-renewable energy resources. Fossil fuels like coal and petroleum are some examples. Petroleum products are energy-rich components of carbon which have undergone anaerobic degradation with the help of sun's energy. Availability of petroleum is limited. |
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| Renewable or Non-conventional Energy Resources |
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| Renewable energy resources are solar radiation, wind power, hydel power, biomass and nuclear power.They can be recycled and renewed by nature. These are normally pollution free. In India, unconventional energy resources are harnessed by different methods |
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