Except hydel power, the sources of thermal power i.e. Other conventional energies are non-renewable in nature. The enormous reserve of fossil fuels (coal, crude-oil, natural gas, etc.) are fast depleting. But the sources of non-conventional energy are flow-resources. There is no anxiety for their exhaustion.

Renewable energy sources are sources that are continuously replenished by natural processes. For example, solar energy, wind energy, bio-energy - bio-fuels grown sustainabl y, hydropower etc., are some of the examples of renewable energy sources. A renewable energy system converts the energy found in sunlight, wind, falling-water, seawaves, geothermal heat, or biomass into a form, we can use such as heat or electricity. Most of the renewable energy comes either directly or indirectly from sun and wind and can never be exhausted, and therefore they are called renewable. Solar: India receives solar energy in the region of 5 to 7 kWh/m2 for 300 to 330 days in a year.

This energy is sufficient to set up 20 MW solar power plant per square kilometre land area. Wind Energy: India has been rated as one of the most promising countries for wind power development, with an estimated potential of 20,000 MW. Biomass fuels account for about one-third of the total fuel used in the country. It is the most important fuel used in over 90% of the rural households and about 15% of the urban households. Using only local resources, namely cattle waste and other organic wastes, energy and manure are derived.

Thus the biogas plants are the cheap sources of energy in rural areas Cogeneration: Cogeneration improves viability and profitabilit y of sugar industries. I ndian sugar mills are rapidly turning to bagasse, the leftover of cane after it is crushed and its juice extracted, to generate electricity. This is mainly being done to clean up the environment, cut down power costs and earn additional revenue. According to current estimates, about 3500 MW of power can be generated from bagasse in the existing 430 sugar mills in the country. Around 270 MW of power has already been commissioned and more is under construction. Renewable energy sources also called non-conventional energy, are sources that are continuously replenished by natural processes.

For example, solar energy, wind energy, bio-energy - bio-fuels grown sustain ably), hydropower etc., are some of the examples of renewable energy sources A renewable energy system converts the energy found in sunlight, wind, falling-water, seawaves, geothermal heat, or biomass into a form, we can use such as heat or electricity. Most of the renewable energy comes either directly or indirectly from sun and wind and can never be exhausted, and therefore they are called renewable. However, most of the world's energy sources are derived from conventional sources-fossil fuels such as coal, oil, and natural gases. These fuels are often termed non-renewable energy sources. Akt ob opredelenii granici razdela sobstvennosti obrazec en. Although, the available quantity of these fuels are extremely large, they are nevertheless finite and so will in principle 'run out' at some time in the future Renewable energy sources are essentially flows of energy, whereas the fossil and nuclear fuels are, in essence, stocks of energy Various forms of renewable energy Solar energy Wind energy Bio energy Hydro energy Geothermal energy Wave and tidal energy.

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