Standard 4 kW PVAbout £8,000
3–6 kW solar only£6,000–£10,000
Battery storage is a separate major cost line. Compare solar-only and solar-plus-battery totals separately so the system scope stays clear.
Solar panel cost by system size
3 kW PV
Example 5 kWh battery £4,500 · combined £10,500£6,000
Example 5 kWh battery £4,500 · combined £10,500£6,000
4 kW PV
Example 8 kWh battery £8,000 · combined £16,000£8,000
Example 8 kWh battery £8,000 · combined £16,000£8,000
5 kW PV
Example 10 kWh battery £9,000 · combined £18,000£9,000
Example 10 kWh battery £9,000 · combined £18,000£9,000
6 kW PV
Example 12 kWh battery £10,000 · combined £20,000£10,000
Example 12 kWh battery £10,000 · combined £20,000£10,000
Solar plus battery examples
3 kW PV + 5 kWh battery£10,500
4 kW PV + 8 kWh battery£16,000
5 kW PV + 10 kWh battery£18,000
6 kW PV + 12 kWh battery£20,000
Other planning costs
Typical inverterAround £900
Structural surveyAround £150
ScaffoldingAround £800
What changes the solar quote?
- PV capacity and the number/type of panels.
- Inverter and monitoring specification.
- Roof orientation, pitch, shading and usable area.
- Battery capacity and whether it is installed at the same time.
- Scaffolding, access and roof condition.
- Electrical upgrades and consumer-unit work.
Regional pricing
LondonBrightonBristolCambridgeBirminghamNottinghamManchesterLiverpoolLeedsNewcastleGlasgowEdinburghCardiffBelfast
Source
Checkatrade
View source ↗Solar Panel Installation: Cost Breakdown 2026
Used for 3–6kW PV, battery, inverter, structural survey and scaffolding benchmarks.
Frequently asked questions
How much does a 4kW solar system cost in 2026?
The current Checkatrade benchmark is about £8,000 for a standard 4kW solar PV installation before battery storage.
How much does a 6kW solar system cost?
The current solar-only benchmark is about £10,000 for a 6kW PV installation.
How much does a solar battery add?
The published examples range from about £4,500 for 5kWh to £10,000 for 12kWh. Battery capacity, inverter architecture and installation details affect real pricing.
Does the solar price include scaffolding?
Do not assume it does. The current source uses around £800 as a typical scaffolding allowance, so check each quote explicitly.