How Much Do Solar Panels Cost in the UK? (2026 Guide)
A complete breakdown of solar panel installation costs for 3-bed, 4-bed, and large homes. Updated prices for panels, batteries, and labor.
One of the biggest questions homeowners ask is: "How much will it actually cost?" In 2026, prices have stabilized, but the addition of battery storage has changed the average quote significantly.
Quick Cost Summary (2026)
| Home Size | System Size | Panels Only | With Battery |
|---|---|---|---|
| Small (2 Bed) | 3 kW (8 panels) | £5,000 - £6,000 | £8,000 - £10,000 |
| Medium (3 Bed) | 4-5 kW (10-12 panels) | £6,500 - £8,000 | £10,500 - £13,000 |
| Large (4+ Bed) | 6+ kW (14+ panels) | £9,000+ | £14,000+ |
* Estimates based on MCS certified installations including 0% VAT.
Where Does The Money Go?
The average quote is split roughly as follows:
The Battery Premium
Adding a battery costs roughly £4,000 - £6,000 extra. However, it increases your self-consumption from ~40% to ~85%.
Read Battery Guide →3 Factors That Increase Price
Roof Type
Slate roofs are brittle and take longer. Flat roofs need specialized tubs.
Pigeon Proofing
A mesh guard around panels costs £200-£400 but prevents future damage.
Micro-Inverters
Optimizers (like Enphase) cost more but help if you have shading.
Pro Tip: Always get at least 3 quotes. Prices can vary by 20% between local installers and large national firms.