Solar Panels in London — 2026 Guide
Based on a typical system size, average energy prices and a typical home — your figure will differ.
Is London a Good Place for Solar Panels?
London receives an average of 1625 hours of sunshine per year — slightly above the UK average of 1,493 hours. Combined with South East’s energy prices tracking the UK average, solar panels installations here may offer good value (individual results will vary).
London has a population of 8,900,000, and the area falls within the South East region. We recommend getting at least 3 quotes to compare prices.
Solar Panels Costs in London (2026)
| System size | Typical cost | Could save (est.) | Payback (est.) |
|---|---|---|---|
| 3kWp | £4030–£5390 | up to £450/yr | ~11 yrs |
| 4kWp (most common) | £6430–£8130 | up to £700/yr | ~10 yrs |
| 6kWp | £9390–£12680 | up to £1030/yr | ~9 yrs |
Source: Green Reach Energy research, July 2026. Prices are estimates and include installation and VAT. Actual costs may vary.
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Available Grants in London
Solar panels in London qualify for 0% VAT until March 2027. The Smart Export Guarantee pays 4p–15p/kWh for surplus electricity you export to the grid.
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Find Installers in London
We recommend getting at least 3 quotes from qualified installers before making a decision. Check reviews, ask for local references, and make sure warranties are clearly stated in writing.
What to check before hiring an installer in London
- Qualifications — check the installer holds relevant qualifications and certifications for solar panels before signing any contract
- Local references — ask for completed jobs in London or Greater London
- Reviews — check online reviews before committing
- Warranty — product and workmanship warranties should be clearly stated in writing
- 3 quotes minimum — we recommend comparing at least three quotes to ensure you get a fair price
Frequently Asked Questions
How much do solar panels cost in London?
Is there a grant for solar panels in London?
Solar panels in London qualify for 0% VAT until March 2027. The Smart Export Guarantee pays 4p–15p/kWh for surplus electricity you export to the grid.