Solar Energy Advantages And Disadvantages

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The sun has delivered energy over billions of years and the earth has received ultimate source for all the energy used by people especially light energy. After sometimes, the increase in advance development of technologies devices able to collect solar thermal energy for heat and convert it into energy. The benefits of using solar energy, it does not produce air pollution or emits carbon dioxide and bring minimal impacts on the environment. However, the measure of daylight that arrives at the base at the world 's surface is not consistent. The measure of daylight changes relying upon area, time of day, period of the year, and climate conditions. In addition, it requires huge land to operate that leads to expensive start-up cost. In order to collect solar energy, solar photovoltaic (PV) devices, or solar cells, change sunlight directly into electricity. Light is absorbed in a solid by the transfer of photon energy into excitation of electrons by using small Photovoltaic (PV). Small PV cells can power calculators, watches, and other small electronic devices. The arrangements of numerous solar cells in PV panels and arrangements of multiple PV panels in PV arrays can produce electricity. Some PV power plants have large arrays that cover many acres to produce electricity for thousands of homes.

2.2 Wind Power The Wind is one of the renewable energy that results of uneven heating of atmosphere cause by the sun, irregularities of the earth’s surface and the rotation of the

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