9kW Solar System UK
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Get Free QuotesHow much does a 9kW solar system cost?
A 9kW solar system is a large residential installation. Specs: 22-23 panels (at 400W). Roof space: 38-42m². Cost: £9,000-£12,500 at 0% VAT. Annual generation: 8,100-9,450 kWh. Savings: £900-£1,500/yr. Payback: 7-11 years. 25-year profit: £18,000-£30,000. This size covers the average home PLUS a heat pump OR an EV — making it excellent for future-proofing. Export limitation (3.68kW single-phase) becomes relevant — a battery is strongly recommended to capture surplus.
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Related: Home Heating Systems
Solar panels are most powerful when combined with an efficient heating system. Heat pumps use solar-generated electricity to heat your home at 300-400% efficiency — making them the ideal partner for solar.
Learn more about how air source heat pumps work alongside solar panels.
Heat pumps use electricity at 300-400% efficiency, making them ideal partners for solar.
Heat pump installation typically takes 2-3 days and is best planned alongside solar.
From our sister site Home Heat Pump Guide
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