Advantage And Disadvantage Of Solar Energy

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INTRODUCTION The major challenges for mankind in the upcoming years include the availability of fossil fuels and global warming that result from their ever increasing use. The population growth and today’s modern life styleare the root cause for the strong energy demand. Since thedemand for the energy rises day by day and enforce the scientific community to explore the potential of renewable sources of energy for the future. Renewable energy is energy which is generated from natural sources i.e. sun, wind, rain, tides and it is the by far most the cleanest sources of energy available on this planet. Among the various energy sources the solar energy is an attractive alternative energy source, inexhaustible, available at no cost and pollution free. In order to convert the solar energy, the solar energy conversion system should be cost effective and energy efficient. The solar energy conversion systems are broadly divided into two categories: (i) photothermal and (ii) photovoltaic. Thephotothermalsystems convert solar radiation into thermal energy, which may be converted as electrical energy, whereas the photovoltaic systems directly convert sunlight into electricity. The photovoltaic effect was first discovered by Becquerel [1] in 1839 who observed a photovoltage when light was directed onto one of the electrodes in an electrolyte solution. Later Lange [2] did pioneering work on selenium and cuprous oxide photovoltaic cells. Today photovoltaic modules are incredibly
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