Solar Photovoltaic (PV) systems convert sunlight into electricity using layers of semi-conducting materials. When panels are exposed to natural daylight they produce a direct electric current (DC), which is converted in to mains compatible alternating electrical current (AC) by an inverter.
The AC electricity can then be used to power household appliances via the existing wiring or if there is no demand be fed back into the national grid. PV panels work all year round, even on cloudy days, although it is fair to say that the higher the daylight intensity the greater the yield of electricity will be produced.
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