10kW Solar System UK

How much does a 10kW solar system cost?

A 10kW solar panel system is a large residential installation. Specs: 24-25 panels (at 400W each). Roof space needed: 42-50m². Cost: £10,000-£14,000 at 0% VAT. Annual generation: 9,000-10,500 kWh. Annual savings: £1,000-£1,800 (depending on self-consumption). Payback: 7-12 years. 25-year profit: £20,000-£35,000. Ideal for: 4-5+ bed detached homes, homes with heat pumps (4,000-6,000 kWh extra), EV charging (1,500-3,000 kWh extra), high-consumption households. Requires: large south/east/west-facing roof, DNO notification (G99), possibly export limitation (3.68kW single phase). Battery strongly recommended for systems this size: 10-13.5kWh (£4,000-£6,000 extra).