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2015-12-07T20:12:51+05:30

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I'm not sure!! i think solar cell ,solar panel,solar furnaces!!
solar cell are most efficient and offer efficiency upto 30per.
solar cell are made up of semiconductors like silicon and gallium!!
to increase efficiency , a large number of such cells are arranged so that they could collect large amount of solar energy!!

cons:
initial cost high.
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