Solar panel cost UK 2026

A 4 kW solar PV system (typical 3-bed semi) costs £6,500–£8,800 installed in 2026. Add a 5 kWh battery for £3,500–£5,000. Payback is now 6–9 years with the Smart Export Guarantee (SEG) and current electricity prices.

How much does this cost in the UK in 2026?

The typical UK price range is £6,500–£18,500, with the average household paying around £9,000. Use the free calculator below to get a personalised estimate.

Free solar panel cost uk 2026 calculator

What affects the cost?

• System size (kW) — driven by roof area and energy use
• Number and type of panels (mono crystalline at 400–450 W is standard)
• Inverter — string, hybrid, or microinverters
• Battery storage size (5, 10, or 15 kWh)
• EV charger integration
• Scaffolding and roof access
• Whether your inverter is solar-compatible with your future heat pump

Cost breakdown

Cost by UK region

Regional pricing varies by up to 50 %, mostly driven by labour rates. These multipliers apply to the base UK cost:

Planning permission?

Permitted development for most homes; conservation area listings may need permission

How long does it take?

1–3 days typical, plus design and approvals time beforehand.

DIY vs Professional

Difficulty: Pro required. UK building regulations and Part P/Gas Safe rules mean most of this work must be done by registered professionals. Even where DIY is permitted, paying a pro is usually faster and more reliable.

How to save money

• Choose an MCS-certified installer — required for SEG payments
• Get at least 3 quotes — prices vary 20–30 %
• Don't over-size for export — sized to match your daytime use is usually most profitable
• A battery doubles your self-consumption — usually worth it if you're home in the evening
• Sign up for the best SEG tariff (Octopus Outgoing, EDF Export) — not always the supplier you buy from

How to find a trusted tradesperson

Always get at least three written quotes. Use a vetted UK trade network for peace of mind:

• Checkatrade — vetted local trades with reviews
• MyBuilder — reviewed builders by job type
• Bark — get quotes from local pros

Or use the calculator above to get 3 free quotes direct to your inbox.

Frequently asked questions

How much can solar save on energy bills?

A 4 kW system saves £700–£1,200/year on a typical 3-bed home with a battery, based on 2026 electricity prices. Pay-back is 6–9 years.

Do I need planning permission for solar panels?

No — solar PV is permitted development for almost all UK homes. Conservation areas, listed buildings and certain flats may need permission.

Is a battery worth it with solar?

Usually yes if you’re home in the evenings — a 5 kWh battery typically pays back in 8–11 years and roughly doubles your solar self-consumption.

Get 3 free quotes

Use the calculator above to get an estimate, then submit your details to receive 3 free quotes from vetted local tradespeople. No signup, no spam.

Disclaimer: Prices are guide ranges based on 2026 UK market data. Get quotes from local tradespeople for accurate pricing.