Calculate your solar panel cost
Solar panel cost by system size in Brighton
Terraced home · UK solar £6,000£6,250
2–3 bed / semi-detached · UK solar £8,000£8,300
Small detached · UK solar £9,000£9,350
Large detached · UK solar £10,000£10,400
Solar plus battery examples
Battery benchmark £4,500£10,750
Battery benchmark £8,000£16,300
Battery benchmark £9,000£18,350
Battery benchmark £10,000£20,400
How the moderated solar factor works
What can change a real Brighton quote?
- Solar PV capacity in kW
- Panel and inverter specification
- Roof orientation, pitch and usable area
- Scaffolding and access
- Battery capacity in kWh
- Electrical upgrades and monitoring
- Roof condition and structural suitability
Local planning considerations
Coastal exposure, conservation areas, parking and restricted access can affect individual quotations beyond the broad South East planning model.
- Exterior specifications may need more attention where a property is exposed to coastal weather and salt-laden air.
- Tight street access or controlled parking can change waste, scaffold and delivery logistics even when the underlying project is unchanged.
- Check listed-building or conservation constraints before assuming a standard window, roof, rendering or extension specification.
How the regional model works
The broad South East factor is 1.15×, but solar uses a moderated 1.038× factor to match the live calculator. Only one quarter of the regional difference is applied to the solar-only benchmark, while battery storage remains at the national equipment benchmark.
Sources
Solar Panel Installation: Cost Breakdown 2026
Published / checked: June 2026
Used for: 3–6 kW solar PV and battery storage benchmarks
Frequently asked questions
How much do solar panels cost in Brighton in 2026?
Current UK solar-only benchmarks are £6,000 for 3 kW, £8,000 for 4 kW, £9,000 for 5 kW and £10,000 for 6 kW. The model gives about £8,300 for 4 kW in Brighton.
How much is a 4 kW solar system with an 8 kWh battery in Brighton?
The national example is £8,000 solar plus £8,000 battery. The model adjusts only the solar component, giving about £16,300.
Why is the solar regional adjustment smaller than the general South East factor?
Solar contains a large equipment component that is less locally variable than labour-heavy building work, so the calculator applies only one quarter of the broad regional difference.
What can make a solar installation more expensive?
Roof access, scaffolding, electrical upgrades, inverter specification, battery capacity, roof condition, structural work and complex panel layouts can increase the total.