The earth is the store house of energy. The fossil fuels beneath its surface, the wind and water flow above its surface, the plants growing on its surface, the sunlight falling upon it, are the sources of energies on the earth. Types of energy resources are renewable and non-renewable energy resources.
Non-renewable energy resources
They are available in limited amount and are developed over a long period of time. Because of their indiscriminate use they are likely to be exhausted in the near future. Examples are: Fossil fuels, Coal, natural gas, and Nuclear power.
Renewable energy resources
Renewable energy resource is the natural energy flow and thus it has the potential of being continually replenished. So it can be used infinitely. Examples are: firewood, animal dung, solar energy, wind energy geothermal energy, tidal energy, hydral energy etc.
Fossil fuel
Examples for fossil fuels are coal, petroleum and natural gas. Fossil fuels are the remains of organisms that lived 200 to 500 million years ago. They are formed inside the earth crust through heat and compression of organic matter buried underneath.
Coal
Types of coal based on its composition are anthracite, bituminous and lignite. Coal is used for cooking, industrial heating and for production of electricity in thermal power plants. About the 5 percentage of world’s coaI reserve is found in India. Jharkhand, Odisha, West Bengal, Madhya Pradesh, Andhra Pradesh and Maharashtra are the coal states of India. India has a huge coal deposits left for nearly 200 years. Coal mining is very harmful to the environment. It causes air pollution, respiratory diseases and lot of other environmental issues.
Petroleum
Petrol, diesel, kerosene etc. are the petroleum product. Whatever oil we are getting from the oil reservoir is the crude oil and after distillation process, we can separate Petrol, Diesel and kerosene.
Natural gas
Natural gas is a mixture of methane, ethane, propane and butane. It is available as LPG and CNG.LPG consist of propane and butane. It is low cost and low pollution.
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