Solar Panel Cost Calculator UK
Get a 2026 UK solar panel cost estimate in 30 seconds. Choose system size, battery capacity and region for an instant installed cost. 0% VAT, MCS-certified installer pricing including scaffolding, inverter and the G98/G99 DNO application. No email required.
Estimate Your Solar Cost in 30 Seconds
3 steps. 0% VAT is reflected throughout (UK relief to March 2027); pricing includes scaffolding, inverter, DC isolator and the G98/G99 DNO application. Savings and SEG export are explained below.
How This Calculator Works
Our solar calculator combines system size, battery capacity and region with real 2026 MCS-certified installer pricing at 0% VAT, including scaffolding, inverter and the DNO application. For a worked example, a 5 kWp array on a Midlands semi lands near £7,500 installed; add a 5 kWh battery and you're at roughly £10,800, then the North/Yorkshire 0.92 multiplier pulls that back to about £9,940 before the ±13% band. The usual pitfall is sizing the system to the roof rather than to your consumption – a battery only earns its keep if you actually shift evening load onto stored solar, so match the kWp and storage to how much power you draw after dark. If you're also planning to charge a car or run a heat pump, our solar system size guide and EV charger installation cost guide help you size the array for that extra load.
System & Battery (installed, 0% VAT)
- 3 kWp £4,300–£5,600 · 4 kWp £5,500–£7,100
- 5 kWp £6,600–£8,500 · 6 kWp £7,700–£9,900
- 10 kWp £11,900–£15,400
- +5 kWh battery ~£3,500 · +10 kWh ~£5,800 · +15 kWh ~£8,200
- Per-kWp pricing falls from ~£1,650/kWp at 3 kWp to ~£1,350/kWp at 10 kWp.
Includes panels, inverter, scaffolding, DC isolator and the G98/G99 DNO application at 0% VAT.
Savings, SEG & Regional Multipliers
- A 5 kWp + 5 kWh system typically pays back in ~9–12 years.
- Surplus is exported under the Smart Export Guarantee (SEG), ~£0.15/kWh.
- Battery raises self-use from ~30% (export-only) to ~85% (15 kWh).
- London 1.22× · South East 1.12× · Midlands 1.00× (baseline)
- North 0.92× · Wales 0.94× · Scotland 0.96× · NI 0.90×
This tool shows installed cost only. Savings, SEG income and payback depend on your usage and tariff — see the cost guide. Low/high band reflects a ±13% spread.
Typical Solar Panel Installation Costs (2026)
Installed at 0% VAT incl. scaffolding, inverter & DNO application, Midlands baseline (±13%).
| System size | Battery | Cost range |
|---|---|---|
| 3 kWp (8 panels) | None | £4,306–£5,593 |
| 4 kWp (10 panels) | None | £5,394–£7,006 |
| 5 kWp (13 panels) | None | £6,525–£8,475 |
| 10 kWp (25 panels) | None | £11,745–£15,255 |
| 5 kWp | +5 kWh battery | £9,418–£12,232 |
| 6 kWp | +10 kWh battery | £12,363–£16,057 |
These figures power the calculator above — enter your own spec for a tailored estimate. For the full breakdown, read our complete cost guide.
Frequently Asked Questions
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