How Much for Solar Panels? UK 2026 Pricing
How much do solar panels cost in the UK?
Solar panels cost £5,000–£11,000 for most UK homes in 2026, depending on system size. A 4kW system (10 panels, most popular): £5,500–£8,000. A 6kW system (16 panels): £8,000–£11,000. All prices include 0% VAT, MCS certification, panels, inverter, mounting, wiring, scaffolding, and labour. Adding a 10kWh battery costs an extra £4,000–£6,000. These prices are the total installed cost — there are no hidden extras.
2026 Solar Panel Prices by System Size
Complete installed prices (0% VAT, MCS-certified):
| System | Panels | Typical Home | Price Range | Price per kWp | |--------|--------|-------------|------------|---------------| | 2kW | 5 | 1-bed flat | £3,000–£4,500 | £1,500–£2,250 | | 3kW | 8 | 2-bed house | £4,500–£6,500 | £1,500–£2,167 | | 4kW | 10 | 3-bed house | £5,500–£8,000 | £1,375–£2,000 | | 5kW | 13 | 4-bed house | £6,500–£9,500 | £1,300–£1,900 | | 6kW | 16 | 5-bed house | £8,000–£11,000 | £1,333–£1,833 |
What is included in the price: - Solar panels (specified brand and model) - Inverter (string, hybrid, or micro-inverters) - Mounting system (rails, hooks, clamps) - DC and AC wiring, isolators, connectors - Scaffolding erection and removal - Labour (1–2 day installation) - DNO notification (G98 or G99) - MCS certification - Electrical Installation Certificate - System commissioning and monitoring setup
What is NOT included: - Solar battery (add £4,000–£6,000 for 10kWh) - EV charger (add £800–£1,100 for Zappi) - Bird proofing (add £300–£600 if needed) - Roof repairs (if needed before installation)
Source: MCS installer pricing survey Q1 2026.
What Affects the Price?
- System size — the biggest factor. Each additional panel adds £200–£350 to the total.
- Panel brand — budget panels (Trina, Longi): £200–£250 each. Premium (SunPower, REC): £300–£450 each.
- Inverter type — string inverter: £500–£1,000. Hybrid: £1,000–£2,000. Micro-inverters: £1,000–£2,800.
- Roof type — standard tile is cheapest. Slate adds 5–15%. Flat roof adds 10–15% (tilt frames needed).
- Scaffolding — included in most quotes. Complex access (narrow streets, party walls) may add £200–£400.
- Location — prices are broadly national. Very remote locations may have a small premium for travel.
- Installer — prices vary 15–25% between installers for the same specification. Get 3+ quotes.
Price Breakdown: Where Your Money Goes
Typical 4kW system cost breakdown (£6,750 average):
| Component | Cost | % of Total | |-----------|------|------------| | Panels (10 × £250) | £2,500 | 37% | | Inverter | £750 | 11% | | Mounting system | £450 | 7% | | Wiring & components | £300 | 4% | | Scaffolding | £350 | 5% | | Labour (2 days) | £1,600 | 24% | | Overheads, certification, warranty | £800 | 12% | | Total | £6,750 | 100% |
Key insight: Panels are only 37% of the total cost. Labour and overheads are 36%. This is why DIY rarely saves as much as people expect — and why getting multiple quotes matters (installer pricing varies more than panel pricing).
Source: MCS installer cost structure analysis.
How to Get the Best Price
- Get at least 3 quotes — prices vary 15–25% between installers for the same specification
- Install in winter — some installers offer 3–8% discounts during their quiet season (November–February)
- Choose mid-range panels — JA Solar, Trina, and Longi offer 95% of premium panel performance at 60–70% of the price
- Accept a standard string inverter if your roof is unshaded — no need for expensive micro-inverters on a simple south-facing roof
- Install a hybrid inverter (not a basic string) if you might ever want a battery — costs £200–£400 more now but saves £1,000+ later
- Ask about bulk deals if you have neighbours interested — some installers discount for multiple installations in one street
- Compare the TOTAL package, not just the headline price — the cheapest quote may have weaker panels, shorter warranties, or no Insurance-Backed Guarantee
Price History and Trend
UK solar panel price history (4kW system):
| Year | Average Cost | VAT Rate | Effective Cost | |------|-------------|----------|----------------| | 2010 | £12,000 | 5% | £12,600 | | 2015 | £6,500 | 5% | £6,825 | | 2020 | £5,500 | 5% | £5,775 | | 2022 | £6,000 | 0% | £6,000 | | 2024 | £6,500 | 0% | £6,500 | | 2026 | £6,750 | 0% | £6,750 |
Prices have stabilised since 2023. The dramatic 90% drop from 2010 to 2023 is over. Future drops will be incremental (1–3% per year at most) as manufacturing costs are near the floor for silicon technology.
Should you wait for cheaper? No. Every month you delay costs £50–£90 in lost savings. And if 0% VAT reverts to 5% or 20% after March 2027, prices will INCREASE by £275–£1,600.
Source: Solar Energy UK historical pricing; IRENA cost trends.
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