Solar panel cost and savings in London, Westminster
London sits at 51.50°N, 0.12°W in Westminster, United Kingdom. A typical residential solar system there is sized at 4 kW, laid out as 9 panels of 440 W each, mounted at a 40 degree tilt facing the sun's midday path.
Based on PVGIS solar radiation data for London's coordinates, that system produces an estimated 4,046 kWh in its first year. At the local electricity price of £0.26 per kWh (export £0.13 per kWh, daily supply charge £0.57), that generation is worth an estimated £665 a year to a household with typical usage patterns for a 3-person home.
Get a solar estimate for your home in LondonIncentives in London
No incentive currently applies to a system installed in London.
Cost and payback
A typical system in London costs an estimated £5,148 to £8,712 installed. With no incentive currently applying, that is also the net cost, and the system pays back in about 11 years at today's local electricity price.
These figures assume a typical 3-person household with no pool, electric vehicle or electric heating, and installation in 2026. Incentive schemes change, and one may apply here by the time you install. Electricity prices shown here are set at the country level. Incentive amounts, when present, use each scheme's national or regional scope as noted above, except where an incentive's value is itself calculated from London's local solar zone; only the production and payback figures are calculated specifically for London's coordinates.
Frequently asked questions
How much solar power can a typical home in London generate?
A typical 4 kW system (9 panels) in London produces an estimated 4,046 kWh a year, based on PVGIS solar radiation data for its coordinates.
What does solar cost in London?
A typical system costs £5,148 to £8,712 installed. No incentive currently applies, so that is also the estimated net cost.
How long does solar take to pay back in London?
At local electricity prices, a typical system in London pays back in about 11 years, with estimated annual savings of £665.
Nearby locations
All solar pages in Westminster · All solar pages in United Kingdom