Falling prices and improved efficiency of solar panels, along with tax credits, rebates, and other programs makes the installation of rooftop photovoltaics (PVs) more economical than ever. The average cost of solar panels is now about $0.613 per watt, down from $76.67 per watt in 1977. Solar panel installation companies had been primarily concerned with cutting down costs involved in installation. Now they are equally interested in enhancing the capability and capacity of solar panels.
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