Complete guide to solar panel prices in the UK. Find out how much solar panels cost by house size, battery storage options, and calculate your potential savings.
Solar panel installation costs in the UK have fallen by over 60% in the last decade, making them more accessible than ever. In 2025, a typical residential solar system costs between £5,000 and £12,000, depending on system size, panel quality, and whether you include battery storage.
With 0% VAT on residential solar installations until at least March 2027, there has never been a better time to invest in solar energy. A well-designed system can save £700-£1,800 annually on electricity bills, paying back your investment in 8-12 years.
| House Size | System Size | Panels | Cost Range | Annual Savings |
|---|---|---|---|---|
| 1-2 Bedroom | 3kW | 8 | £5,000 - £6,500 | £500 - £700 |
| 3 Bedroom Semi | 4kW | 10-12 | £6,000 - £8,000 | £700 - £900 |
| 3-4 Bedroom Detached | 5kW | 12-14 | £7,500 - £9,500 | £900 - £1,200 |
| 4-5 Bedroom | 6kW+ | 16-20 | £9,000 - £12,000 | £1,200 - £1,800 |
Adding battery storage to your solar system increases upfront costs but significantly improves your return on investment. Without a battery, excess solar is exported for just 4-15p/kWh. With a battery, you store that energy and avoid buying electricity at 24p+/kWh later.
| Battery Size | Best For | Cost Range |
|---|---|---|
| 5kWh | Small homes, backup | £2,500 - £3,500 |
| 10kWh | Average homes | £4,500 - £6,000 |
| 13.5kWh (Powerwall) | Larger homes | £7,500 - £9,500 |
| 15-20kWh | High usage, EVs | £8,000 - £12,000 |
Complex roof shapes, multiple levels, or difficult access may increase installation costs. Simple pitched roofs are most economical.
Premium panels cost more but offer better efficiency, longer warranties, and superior performance in low light. We only use tier-1 panels.
Larger systems have lower cost-per-watt but higher total investment. Right-sizing is crucial for optimal ROI.
Adding batteries increases costs but significantly improves returns. Essential for maximum self-consumption.
Solar panels are one of the few home improvements that actually pay for themselves. Here's how the maths works for a typical 4kW system:
With battery storage increasing self-consumption to 80%+, payback reduces to 8-9 years and lifetime savings increase significantly.
Every home is different. Get a free, no-obligation quote tailored to your property and energy usage.