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What happens to solar electricity not used in the house?

Any solar generated electricity which is not used in the home immediately will usually feed back to the grid (export). Sometimes the grid operator advises us that it can’t cope with exported power from solar PV systems in the area and they enforce export limitation. This means we would program the inverter of a system to switch off if the home didn’t require the electricity being generated, and prevent any excess from being exported to the grid.