How much does a 10kW solar system cost?
Priced June 2026
A 10kW solar system costs £13,000–£17,000 installed — about 23 panels, generating ~8,500 kWh a year.
Best suited to large home, ev + heat pump. Payback is typically 9–14 years.
| Typical installed cost | £13,000–£17,000 |
| Number of panels | ~23 panels |
| Annual generation | ~8,500 kWh |
| Typical payback | 9–14 years |
| Best suited to | Large home, EV + heat pump |
| Roughly per kW | £1,500/kW |
A 10kW system sits at the larger end of typical UK home installs. The price covers the 23 panels, the inverter, mounting and scaffolding, certified labour and MCS certification — at 0% VAT until 31 March 2027. Here's how it compares to other system sizes:
| System | Low | Typical | High |
|---|---|---|---|
| 3kW | £5,000 | £5,500 | £6,500 |
| 4kW | £6,000 | £7,000 | £8,000 |
| 5kW | £7,500 | £8,500 | £9,800 |
| 6kW | £9,000 | £10,000 | £11,500 |
| 8kW | £11,000 | £12,500 | £14,500 |
| 10kW | £13,000 | £15,000 | £17,000 |
Whether a 10kW system is right for you depends less on your property type than on how much electricity you actually use. Put your own usage into the free calculator to see your cost, saving and payback, or see the full cost-of-solar breakdown.
Frequently asked questions
How much does a 10kW solar system cost in the UK?
A 10kW solar system typically costs £13,000–£17,000 installed in 2026 (panels only, 0% VAT), using around 23 panels — roughly £1,500 per kW.
How much electricity does a 10kW system generate?
A 10kW system generates about 8,500 kWh a year in the UK (south-facing, unshaded), enough for large home, ev + heat pump.
How long does a 10kW system take to pay back?
Typically 9–14 years on panels alone, depending on how much generation you use yourself, your tariff and your region.