How Much Do Solar Panels Cost in 2026
Looking to install solar panels in 2026? Here’s everything you need to know about the cost of going solar in the UK, plus what grants and funding options are available to help make the switch more affordable.
The average cost of a domestic solar panel system in the UK ranges between £5,000 and £8,000 for a typical 3kW to 4kW setup. The price can vary based on:
Size of the system (kW output)
Type and efficiency of panels
Roof size and orientation
Installation complexity
System Size | Estimated Cost | Roof Space Needed | Annual Savings |
|---|
3kW | £5,000–£6,000 | 20–25m² | £450–£500 |
4kW | £6,000–£7,000 | 25–30m² | £600–£650 |
6kW | £7,500–£9,000 | 35–40m² | £800+ |
Battery storage systems typically cost an extra £2,000–£4,000, depending on capacity.
