[unable to retrieve full-text content]Covering a roof or a fa?ade with standard solar cells to generate electricity will change a building?s original appearance ? and not always for the better. At present only dark solar panels are widely available on the market.
Source: http://feeds.sciencedaily.com/~r/sciencedaily/matter_energy/electricity/~3/BnpWUuKUoBY/130722105549.htm
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