Solar Panel Costs in 2026
The cost of solar panels in the UK has dropped significantly over the past decade, making them more accessible than ever. However, prices can vary widely depending on the system size, equipment quality, and installer. Here's what you need to know.
Average Costs by System Size
| System Size | Panels Only | With Battery | Annual Savings |
|---|---|---|---|
| 3 kWp | £4,500 - £6,000 | £8,000 - £11,000 | £400 - £600 |
| 4 kWp | £6,000 - £8,000 | £10,000 - £13,000 | £500 - £750 |
| 5 kWp | £7,500 - £10,000 | £12,000 - £15,000 | £600 - £900 |
| 6 kWp | £9,000 - £12,000 | £13,000 - £17,000 | £700 - £1,050 |
What's Included in the Price?
A typical solar panel installation quote should include:
- Solar panels — the panels themselves, typically 8-16 depending on system size
- Inverter — converts DC electricity to AC for your home
- Mounting system — roof brackets and rails
- Wiring and electrical work — connecting the system to your consumer unit
- Scaffolding — required for safe roof access
- MCS certification — required for SEG payments
- Labour — typically 1-2 days for installation
Battery Storage Costs
Adding a battery to your solar system allows you to store excess energy for use in the evening. Battery costs vary significantly by brand and capacity:
| Battery | Capacity | Typical Cost |
|---|---|---|
| Tesla Powerwall 3 | 13.5 kWh | £8,000 - £10,000 |
| GivEnergy All-in-One | 9.5 kWh | £4,500 - £6,000 |
| BYD HVS | 5.1 - 12.8 kWh | £3,000 - £7,000 |
| Puredrive Energy | 5 kWh | £3,500 - £4,500 |
Factors That Affect the Final Price
Roof type and orientation: South-facing roofs are ideal. East/west-facing roofs may need a larger system to achieve the same output, increasing costs.
Scaffolding requirements: Multi-storey buildings or complex roof layouts require more scaffolding, adding £500-£1,500.
Equipment quality: Tier 1 panels and premium inverters cost more upfront but offer better long-term performance and warranties.
Location: Prices tend to be higher in London and the South East compared to other regions.
Is Solar Worth It in the UK?
For most homeowners, the answer is yes. With electricity prices at around 24p/kWh and the Smart Export Guarantee paying 4-15p/kWh for exported energy, a typical 4kW system can save £500-£750 per year. That means a payback period of 8-12 years, with 15+ years of free electricity after that.
The key is getting a fair price. Use SolarVerify to check your quote before you commit.