Solar Panel Cost by System Size UK 2026

Solar PV cost rises with system size but the per-kW price falls. In 2026: 3 kW £5,500–£7,500; 4 kW £6,500–£8,800; 5 kW £7,800–£10,500; 6 kW £8,900–£12,000.

Quick answer

Typical UK price range: £5,500–£16,000. Typical time: 1–3 days.

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System size 3 kW (~7 panels) 4 kW (~10 panels) 5 kW (~12 panels) 6 kW (~14 panels) 8 kW (~18 panels)

Region London South East South West Midlands North of England Scotland Wales Northern Ireland

Specification level Basic / standard Mid-range Premium / high-end

Extras

5 kWh battery £3,500–£5,000 10 kWh battery £5,500–£8,500 EV charger integration £400–£800 Bird-proofing £350–£700 Generation meter £150–£300

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Estimate only. Prices reflect 2026 UK market data — get quotes from local tradespeople for accurate pricing.

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Budget Under £5,000 £5,000 – £15,000 £15,000 – £30,000 £30,000 – £60,000 £60,000+ Not sure

Timeline As soon as possible 1 – 3 months 3 – 6 months 6+ months Just researching

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Key points

• 3 kW (~7 panels): £5,500–£7,500
• 4 kW (~10 panels): £6,500–£8,800
• 5 kW (~12 panels): £7,800–£10,500
• 6 kW (~14 panels): £8,900–£12,000

Cost breakdown

Item	Low	High
3 kW system	£5,500	£7,500
4 kW system	£6,500	£8,800
5 kW system	£7,800	£10,500
6 kW system	£8,900	£12,000
8 kW system	£11,000	£14,500

Cost by UK region

Region	Typical cost
London	£14,512
South East	£13,437
South West	£11,825
Midlands	£10,750
North England	£9,675
Scotland	£10,212
Wales	£9,675

How to save money

• Match system size to daytime use, not total annual use
• Add a battery if you're home in evenings
• Larger systems usually have better per-kW price

How to find a trusted tradesperson

Get at least 3 quotes from vetted UK trade networks:

• Checkatrade
• MyBuilder
• Bark

FAQs

What size solar system do I need?

For a typical 3-bed UK home using 3500 kWh/year, a 4 kW system is the standard recommendation.

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