Quick Sizing Guide
1-2 bed flat/house: 6-8 panels (2-3kW) | 3 bed semi: 10-12 panels (4-5kW) | 4 bed detached: 12-16 panels (5-6kW) | Large home + EV: 16-20 panels (6-8kW). Each 420W panel measures roughly 1.7m × 1.1m.
Factors That Affect Size
Annual electricity usage is the biggest factor. Check your bill — the average UK home uses 2,900 kWh/year. If you plan to add an EV charger or heat pump, size up. Roof orientation and shading also affect how many panels you need.
Don't Over-Size
It rarely makes sense to install more panels than your roof and budget allow. A well-sized system with battery storage delivers better returns than an oversized system without one. Our surveyors recommend the optimal size for your specific situation.
Related Guides & Resources
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Solar Savings Guide
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Government Grants
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0% Finance Options
Spread the cost with affordable monthly payments.
Instant Solar Estimate
Get a quick price estimate for your home.
