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Solar Panel Costs in the UK
Solar panel costs vary by system size. Here's what UK homeowners typically pay — and the savings they can expect.
Small Home
3kW System
1–2 bedroom home
£5,000–£6,000
Typical installed cost
- Save up to £700/year on bills
- ~7–9 year payback period
- 6–8 panels on your roof
- Smart Export Guarantee eligible
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Average Home
4kW System
3 bedroom home
£6,000–£8,000
Typical installed cost
- Save up to £1,000/year on bills
- ~7–8 year payback period
- 10–12 panels on your roof
- Smart Export Guarantee eligible
Large Home
5kW System
4–5 bedroom home
£8,000–£10,000
Typical installed cost
- Save up to £1,400/year on bills
- ~7–8 year payback period
- 12–14 panels on your roof
- Smart Export Guarantee eligible
Good news: Solar panel installations in the UK are currently zero-rated for VAT, saving you up to 20% on the total cost. The Smart Export Guarantee (SEG) also pays you for excess energy you export back to the grid.