Summary (Max 280 characters)Solar panels are photovoltaic (PV) panels that use thin wafers of silicon crystal. When photons of light hit the silicon crystal they trigger movement of electrons and that produces an electrical circuit. These subatomic particles are the only moving parts in a solar panel.
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Rooftop solar panels are an example of “Distributed solar photovoltaic systems”. They allow anyone to produce their own electricity on-site without relying on an external grid to “transport electricity” from another location to them.

Possible Impact. A reduction of 30-70 Gigatons of CO2 between 2020 and 2050. The cost to implement: $250-500B. Money saved: $8-14 Trillion. Yes, it costs billions but it saves trillions.