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Residential solar is cheap, but can it get cheaper? Paths to $0.05 per kWh
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Residential solar is cheap, but can it get cheaper? Paths to $0.05 per kWh

Enlarge / Tesla smooth black glass solar roof tiles. TeslaThe price of solar panels has fallen far and fast. But the Energy Department (DOE) wants to bring those costs down even further, especially for residential homes. After all, studies have shown that if every inch of useable rooftop in the US had solar panels on it,…