Solar Panels in Greater London

Solar Energy in Greater London

Greater London is home to 330 postcode districts across 13 towns, with an average of 1405 sun hours per year. Solar panels here generate approximately 3,934 kWh annually from a 4kW system, saving homeowners an average of £716 per year.

Is Solar Worth It in Greater London?

With an average of 1405 sun hours per year, homes in Greater London generate approximately 3,934 kWh from a standard 4kW solar panel system. At current electricity prices of around 24.5p/kWh, this translates to annual savings of £716 and a payback period of 10.3 years.

After the payback period, solar panels in Greater London generate pure profit for a further 14 years, with total 25-year returns significantly exceeding the initial investment. Solar panels also add value to your property — research by the Department of Energy & Climate Change found that energy efficiency improvements can add up to 14% to a home’s value.

Solar Panel Costs in Greater London

A typical 4kW solar panel system in Greater London costs between £5,500 and £7,500 including installation. All residential solar installations currently benefit from 0% VAT (until March 2027), saving around £1,300 compared to the standard rate. Eligible households may also qualify for grants through the Home Upgrade Grant (HUG2) scheme.

We recommend getting at least 3 quotes from MCS-certified installers to ensure competitive pricing. Check individual postcode pages below for area-specific cost estimates.

Solar Guides for Greater London Homeowners

Before installing solar panels in Greater London, we recommend reading our guides:

• Solar panel grants and schemes — check what funding is available
• Planning permission for solar panels — find out if you need approval
• Smart Export Guarantee rates — maximise your export income
• Battery storage guide — is a battery worth the extra cost?