How much do solar panels cost in the UK? (2026)
Verified UK solar panel costs in 2026 by system size and with or without a battery, the per-kW rate, why 0% VAT and MCS certification matter to the price, what a fair quote should include, and the scope gaps that catch homeowners out.
Solar panels for a typical UK home in 2026 cost between roughly £5,500 for a modest 4kW array with no battery and £14,000+ for a larger system with storage. Most three-bedroom houses sit in the £6,000–£10,000 range, with the system size and whether you add a battery being the two biggest factors. One thing that should not be on the quote is VAT: solar is zero-rated until 31 March 2027.
Quick answer
A typical 4kW solar system costs £5,500–£8,000 installed in 2026 without a battery, and £8,000–£14,000+ with one. The Energy Saving Trust puts a 3.5kW system at about £6,100. Per kW installed runs £1,400–£2,000. A battery adds £2,500–£5,000. VAT is 0% until 31 March 2027.
How to read this guide#
Two kinds of figures appear below:
- Headline price ranges (system-size bands, per-kW rate, battery uplift): cross-referenced against the Energy Saving Trust and Checkatrade's UK 2026 solar guides. Sources listed at the bottom.
- Practical guidance (MCS, VAT, export payments, what the price should include): drawn from standard UK solar practice and GOV.UK guidance. Useful for context but not cross-referenced figure-by-figure.
Where we could not verify a specific number, we have described the item qualitatively rather than publish a figure that does not trace to a source.
Headline ranges (verified)#
By system size, installed, no battery:
| System size | Suits | Range |
|---|---|---|
| 3 kW (~8 panels) | Smaller home, lower usage | £4,500 – £6,000 |
| 4 kW (~10 panels) | Typical 3-bed house | £5,500 – £8,000 |
| 5–6 kW (~12–16 panels) | Larger home, higher usage | £7,000 – £10,000+ |
With battery storage:
| Setup | Range |
|---|---|
| 4kW system + battery | £8,000 – £12,000 |
| Larger system + battery | £10,000 – £14,000+ |
Other figures:
- Per kW installed: £1,400 – £2,000
- Battery on its own: adds £2,500 – £5,000 depending on capacity and brand
- VAT: 0% on panels and installation until 31 March 2027
Practical guidance (industry standard)#
What drives the price#
- System size (kW). The biggest single factor. More panels generate more but cost more, and the right size depends on your roof and your usage, not on fitting the most you can.
- Battery. The largest optional line. It lets you use daytime generation in the evening instead of exporting it cheaply, but it should be a separate, clearly priced item so you can judge whether it earns its keep.
- Panel and inverter quality. Premium panels and hybrid inverters cost more and are a legitimate reason for a higher quote.
- Roof complexity and access. Awkward roofs, multiple orientations, and scaffolding all raise the price.
VAT: it should be zero#
Residential solar is zero-rated for VAT until 31 March 2027. If a quote adds 20% VAT on top of the panels and installation, it is either wrong or the installer is not applying the relief they should. Either way, query it before signing. See does a builder's quote include VAT for how VAT should appear on quotes generally.
MCS and export payments#
You generally need an MCS-certified installer to qualify for the Smart Export Guarantee (SEG), which pays you for electricity you export to the grid. A non-MCS quote may look cheaper but can cost you the export income and points to a less established installer. The certificate and the DNO grid notification should both be in the quote.
What the price should include#
A complete solar quote should cover:
- Number and wattage of panels, and total system size in kW
- The inverter (and battery, priced separately if included)
- Scaffolding and access
- MCS certification and handover paperwork
- DNO (grid operator) notification
- A realistic annual generation estimate
It often does not include roof repairs found once panels come off an old covering, or electrical upgrades if your consumer unit is not up to standard.
Regional variation#
Solar prices vary less by region than wet trades, because hardware is a big share of the cost. The labour and scaffolding portion still follows the usual pattern: London and the South-East run higher, the North, Wales, and Northern Ireland a little lower.
Red flags in solar quotes#
- VAT added at 20%. It should be zero-rated until 31 March 2027.
- No MCS. Risks your export payments and signals a less established firm.
- Battery bundled into one figure. You cannot judge whether it is worth it.
- No generation estimate. A payback claim with no annual kWh figure behind it is marketing, not a quote.
- Pressure to sign today. A common solar sales tactic; a fair price is still fair next week.
Comparing your quote#
The reliable way to know if a solar quote is fair is to check each line: system size against price, the battery as a separate item, MCS, and that VAT is zero. The easier way is to paste or upload your quote into Check the Quote, where we check every line against current UK rates, flag anything above the fair range or wrongly VAT-rated, and tell you what is missing. Your first check is free. See also how to tell if a quote is too high.
Got a quote you want checked?
Paste any UK contractor quote and Check the Quote compares every line item against current market rates, flags missing scope, and runs a Companies House check on the contractor. Free on your first project.
Frequently asked questions
- How much does a solar panel system cost in the UK in 2026?
- A typical 4kW system for a 3-bed house costs roughly £5,500–£8,000 installed in 2026 without a battery, and around £8,000–£14,000+ with battery storage (Checkatrade, Energy Saving Trust, 2026). The Energy Saving Trust puts a smaller 3.5kW system at about £6,100. Per kilowatt installed, prices run roughly £1,400–£2,000.
- Do solar panels have VAT on them?
- No. The UK applies 0% VAT on solar panels and their installation for residential properties until 31 March 2027. On a £10,000 system that is roughly £2,000 saved. A solar quote that adds 20% VAT on top of the panels and installation is wrong, and worth challenging before you sign.
- How much does a solar battery add to the cost?
- A home battery typically adds £2,500–£5,000 depending on its capacity and brand. A battery lets you store daytime generation for evening use rather than exporting it cheaply, but it changes the payback maths. It is usually the single biggest optional line on a solar quote, so it should be priced separately, not bundled into one figure.
- Why does the installer need to be MCS certified?
- MCS (Microgeneration Certification Scheme) certification is the industry standard for renewable installs, and you generally need an MCS-certified installer to qualify for Smart Export Guarantee (SEG) payments for the electricity you sell back to the grid. A quote from a non-MCS installer may be cheaper up front but can cost you the export income and is a red flag in itself.
- What should a solar panel quote include?
- A complete quote should state the number and wattage of panels, the total system size in kW, the inverter, any battery (priced separately), scaffolding, the MCS certificate and paperwork, and the DNO grid notification. It should also give a realistic generation estimate. A one-line "solar system fitted" price with none of this is impossible to compare and hides what you are actually buying.
Last updated: 27 May 2026