They can be, but compare the electricity you would use at home with the amount you would export. A household using power mainly in the evening has a different case from one working at home. Ask for a forecast using your roof, annual electricity use and daytime demand. Model solar on its own before adding a battery; one household’s payback figure is not a promise for yours.
Join the discussion: What is your annual electricity use, roof direction and typical daytime occupancy? Please leave out your address.
Suggested next step: Compare itemised solar quotes using the same usage assumptions.
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