Can Solar Panels Run a House?
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Can solar panels run an entire house?
A 4kW system generates ~4,000 kWh/year — matching UK average consumption (~3,700 kWh). So annually: yes, solar produces enough. But not at every moment: solar generates during daylight, you consume most in evenings. Without battery: solar covers 30-50% directly. With battery: 70-85%. With battery + smart tariff: 85-95%. The remaining 5-15% comes from the grid — mainly winter evenings. Full off-grid is technically possible but impractical (costs 2-3x more).
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