Solar energy is obtained from sun. We can use it in different ways. There are many machines which can convert solar energy to electric energy or heat energy and etc. The word 'solar' is relating or to be determined by the sun. It is a radiant light and heat from the sun. In future there may be more usage of solar energy as there may be a exhaustion of fossil fuels like petrol, petroleum and coal, products made of them. It must be used as an alternative source of energy. The price of the machines which convert the solar energy to heat and electric energy are very cheap. There may be a great demand for this energy in future. 

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Solar energy is the energy obtained from the sun.
It includes the technologies like solar heating, solar thermal electricity and others. It is the most readily available sources of energy.
It helps in lessening the greenhouse effect.
India is one of the countries having plenty of sunshine.