28 Dec '11, 4pm

Map shows when rooftop #solar will be cheaper than grid electricity

Map shows when rooftop #solar will be cheaper than grid electricity

What happens if and when current subsidies for solar panels are phased out? Doesn't matter -- the cost of solar photovoltaics continues to fall even as the cost of grid electricity continues to rise, which means eventually the two trends will meet and it will make more sense to put panels on your roof than to continue sending a check to your utility company. In San Diego, this will happen sometime around 2013, according to a new animated map from John Farrell at Energy Self-Reliant States . The high cost of grid electricity and the fact that San Diego gets 367 days of sunshine a year will make it the first city where solar is cheaper. By 2020, most of the major metropolitan areas in California, the southwest, and a swath from Philly to Providence will have reached "grid parity." Even Texas, a state where electricity is fairly cheap thanks to an abundance of coal and wind f...

Full article: http://www.grist.org/list/2011-12-28-map-shows-when-rooft...

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