cheapest methd., photoelectric cell are used for generaing solar energy.why.
very easy method.
by Shil19785 years ago
Which renewable energy sources offer the most promise?
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Which alternative energy source is more efficient and cheaper to maintain: solar panels or windmills?
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What is quantum theory?
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Have you tried Solar panel for home energy ? If yes please share how was your experience ? do...share if you have any informative link
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