Summary: There are many advantages to adding solar photovoltaic (PV) systems to the roofs of existing or new buildings (also called distributed solar.) With roof-top solar, the electricity is generated right where it is consumed, avoiding the losses associated with moving power over long distances. No additional land needs to be converted, as happens when large solar farms are built in the desert or on agricultural land. The financing, permitting and technology needed for rooftop solar installation are all simple and well-established.
In California, distributed solar produced about 4% of electricity generation in and about 23% of all solar generation in 2018 (Wikipedia). If solar cell efficiency and cost continue to decrease, some models predict that distributed solar could generate up to 60% of global electricity (Drawdown).
Distributed battery storage, financial incentives, and a smart electricity grid would all strengthen this option.
Goal: Add solar photovoltaic systems to all existing buildings (including residential, commercial, government, schools) where it is physically possible.
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