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Conventional energy sources are
derived from fossil fuels (coal, oil , natural gas) and nuclear
power , result in pollution and damage the environment. Since the
consumption of fossil fuels is increasing at a very fast rate, they will
eventually get depleted. Nuclear wastes are hazardous and difficult to
dispose off. Alternative energy sources are renewable energy sources like bio fuels, solar energy, wind power, hydroelectric power cause little or no pollution. Since this energy is derived from an existing natural energy source and is replaced at a faster rate than it is consumed, it is also known as sustainable energy. Most energy sources are ultimately derived from solar energy. Most governments offer several incentives to producers and users of alternative energy sources. Solar (photovoltaic) cells Solar lanterns Solar lighting Solar traffic signals Solar water heaters Solar cookers Price list of solar equipment Wind power Hybrid wind and solar system
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