Less is more for rooftop solar panels

05/24/2010 | Toronto Sun

When homeowners switch to solar, there's a temptation to plaster every inch of the roof with PV panels. Generally, though, it makes more sense to be selective: stick to unshaded, southern-facing roofs with a slope of no more than 35 degrees. "Having photovoltaic panels covering every inch of your roof doesn't necessarily maximize production. In fact, it may cost you more," notes one solar-energy entrepreneur.

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