1. Rooftop Solar Could Provide Nearly Half of US Electricity Demand

    Rooftop Solar Could Provide Nearly Half of US Electricity Demand

    The study by the National Renewable Energy Laboratory says the estimated potential from rooftop solar has been revised upwards by more than 80 % since the last study in 2008, mostly because of improvements of module efficiencies, building availability and solar modelling. In all, NREL estimates potential rooftop solar installed capacity at 1,118 GW and generation of 1,432 terawatt-hours (TWh). This would account for 39 % of all electricity sales, but could go higher – to around 50 per cent – if higher module efficiencies were taken into account.

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