Asking what solar panels cost is a bit like asking what a kitchen costs. There is a sensible central range, a long tail of premium options, and a surprising number of quotes that are simply too high for what is being supplied. The figures below reflect typical fully installed prices in 2026 for UK homes. Every system is priced to the specific property, so treat these as a benchmark for judging quotes rather than a promise of what yours will be.
Typical Installed Prices in 2026
These ranges assume a straightforward installation on a pitched roof, using mainstream Tier 1 panels and a string inverter, with scaffolding included. Prices include VAT at the current 0% rate.
- Around 3kW (7 to 8 panels): roughly £4,500 to £6,500. Suits smaller homes or limited roof space.
- Around 4kW (9 to 10 panels): roughly £5,500 to £8,000. The most common size for a UK three bed home.
- Around 5kW (11 to 12 panels): roughly £7,000 to £9,500.
- Around 6kW and above (14 or more panels): roughly £8,000 to £12,000, if your roof and supply can accommodate it.
The pattern worth noticing is that price per kilowatt falls as the system grows, because scaffolding, labour and paperwork cost much the same whether the installers fit eight panels or fourteen. If your roof has the space and your budget allows, a larger system usually gives a better return per pound than a small one, provided the extra generation is either used or exported at a reasonable rate.
What Is Actually in the Price
A proper quote covers far more than panels. It should include the mounting system fixed to your rafters, an inverter to convert the DC electricity to usable AC, all wiring and isolators, scaffolding, labour, electrical certification, registration of the system with your network operator, and the MCS certificate you will need for export payments. If a quote is vague about any of these, ask. An itemised quote is the single best protection against being overcharged.
The panels themselves are a smaller share of the total than most people expect. A mainstream 440W panel costs an installer somewhere in the region of £150 to £250. Ten of them is perhaps £2,000 of hardware in a £6,500 job. The rest is inverter, mounting, scaffolding, labour and margin, which is why two quotes for the same panels can differ so widely.
What Pushes a Quote Up
- Scaffolding complications: a terraced house with rear access only, a conservatory under the roof edge, or a three storey property can add several hundred pounds.
- Roof type: slate and clay tiles are slower to work with than concrete tiles. Flat roofs need a different mounting approach, which we cover in our flat roof guide.
- In-roof installation: panels sunk flush with the tiles look tidier but typically cost more than panels mounted on rails above the tiles, unless the roof is being retiled anyway.
- Electrical work: an older consumer unit that needs upgrading, or a long cable run from roof to inverter, adds cost.
- Bird protection mesh, pigeon proofing and panel level optimisers are worthwhile in some situations, but they are optional extras and should be priced as such.
Adding a Battery
Battery storage is the biggest single decision affecting your total. A typical home battery adds roughly £2,500 to £6,000 depending on capacity and brand, and a combined solar and battery installation commonly lands between £10,000 and £14,000. Batteries have been covered by the 0% VAT rate since February 2024, including batteries retrofitted to an existing system, so there is no tax penalty for deciding later. Whether the economics stack up for your usage pattern is a separate question, which we examine in our guide to whether solar battery storage is worth it.
VAT Is at Zero, For Now
All of the prices above benefit from the 0% VAT rate on residential solar, which has applied since 2022 but is currently scheduled to end on 31 March 2027, when the rate is due to return to 5%. On a £7,000 installation that would mean around £350 more. If solar is on your list for the next couple of years, completing the work before that date is a modest but real saving. The wider policy picture, including the Future Homes Standard and the Warm Homes Plan, is covered in our summary of the new solar rules for 2026.
Some households will not need to pay at all. Income linked schemes can fund installations in full for those who qualify; see our guide to solar panel grants for the criteria.
Payback: The Number That Matters More Than Price
A £6,500 system that saves you £900 a year is a better purchase than a £5,000 system that saves you £550. Orientation, shading, your daytime electricity use and your export tariff all feed into that, which is why the cheapest quote is not automatically the best value. We work through realistic savings figures, including payback periods of roughly seven to ten years for typical installations, in our article on how much solar panels actually save.
How to Get a Fair Price
Three habits protect you from almost every pricing problem in this industry. Get at least three quotes, because the spread between them is routinely £2,000 or more for equivalent systems. Insist on itemised pricing so you can compare like with like. And use an MCS certified installer, which is a requirement for export payments and the baseline marker of a legitimate firm.
Before any of that, it helps to know what your roof can actually do, since system size and orientation drive everything else in the quote. Check your roof with our free tool to see its orientation and estimated solar potential first.
Check your roof orientation now
Use our free tool to find out which way your roof faces and whether it is suitable for solar.
Check your roof for freeWhy have I seen solar systems advertised for £3,000 or less?
Adverts at that level usually describe a very small system, exclude scaffolding or other unavoidable costs, or come from lead generation companies that do not install anything and sell your details on. A fully installed 4kW system from an MCS certified firm below about £4,500 should prompt careful questions about what has been left out.
Do solar panel prices vary by region?
Somewhat. Labour and scaffolding costs are higher in London and the South East, and installers in areas with less competition can charge more. The difference is typically hundreds rather than thousands of pounds. Getting quotes from at least one firm outside your immediate area can be a useful benchmark.
Is it cheaper to install solar panels when reroofing?
Usually, yes. If your roof is being retiled or replaced, the scaffolding is already up and an in-roof system can take the place of tiles across part of the roof, offsetting some material costs. If you know your roof will need work in the next few years, it is worth planning the two jobs together rather than paying for scaffolding twice.
