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Alternative or Non-Conventional Sources of Energy

Due to our modern life the demand for energy has increased. We use machines to do more and more of our tasks and our basic requirements are also increasing. As our demand for energy increases, we need to look for more and more sources of energy. We can develop the technology to use the available energy or known source of energy.

Solar Energy
The Sun has been radiating an enormous amount of energy at the present rate for nearly 5 billion years and will continue radiating at that rate for about 5 million years more. Solar radiation reaches the Earth's upper atmosphere at a rate of 1366 watts per square meter (W/m2). While traveling through the atmosphere 6% of the incoming solar radiation is reflected and 16% is absorbed resulting in peak irradiance at the equator of 1,020 W/m². Average atmospheric conditions (clouds, dust, pollutants) further reduce insolation by 20% through reflection and 3% through absorption. Atmospheric conditions not only reduce the quantity of insolation reaching the Earth's surface but also affect the quality of insolation by diffusing incoming light and altering its spectrum.


Solar Photovoltaic Technology is employed for directly converting solar energy to electrical energy by using "solar silicon cell". The electricity generated can be utilized for different applications directly or through battery storage system. Solar Photovoltaic has found wide application in rural areas for various important activities besides rural home lighting. Remote villages deprived of grid power can be easily powered using the Solar Photovoltaic technology. The economics of rural electrification can be attractive considering the high cost of power transmission and erratic power supply in the rural areas. A typical cell develops a voltage of 0.5 - 1 V.


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