Wednesday, February 27, 2008

what is the difference between solar thermal and solar photovoltoics?

o Solar thermal energy is a technology for harnessing solar energy for heat. This is very different from solar photovoltaics, which convert solar energy directly into electricity.

o Polysilicon is the essential raw material in the production of solar cells. This material is very costly right now. About 10 tonnes of this material is required to produce 1 MW of solar energy.

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