How much do solar panels cost in the UK? Energy Saving Trust puts the typical installation cost for a domestic 4.5kWp solar panel system at around £7,600. Your quote will depend on the system design, installation requirements and whether you include battery storage. Source: Energy Saving Trust
Understanding the full installation price makes it easier to compare quotes and decide whether solar suits your home. This guide explains the main costs, how to assess potential savings and what to ask an installer before committing.
How much does a solar panel installation cost?
The £7,600 benchmark is a starting point for budgeting, rather than a fixed price for every property. A smaller installation, a larger array and a project requiring roof work will each need a separate assessment.
For homeowners in Norfolk, Electric11’s solar panel installation service provides an opportunity to discuss system size, roof space and installation requirements before requesting an itemised quote.
Ask your installer to explain what their price covers. A useful quotation should identify:
- The number, manufacturer and model of the panels.
- Total system capacity in kilowatt peak, or kWp.
- The inverter and mounting equipment.
- Scaffolding and access arrangements.
- Electrical installation, testing and handover.
- Any additional roof or electrical work.
- Battery storage, if included.
- VAT treatment and exclusions.
Comparing the total price without checking these details can hide meaningful differences between proposals.
What affects the cost of solar panels?
System size and equipment
Ask for the proposed capacity alongside the panel count. Ten panels from one manufacturer may have a different combined output from ten panels from another.
When comparing equipment, look at the specific models, warranty terms and installation scope. Ask each installer to explain why their proposed system fits your electricity use.
Roof access and condition
Difficult access, roof repairs and the choice between panels mounted above the roof or integrated into it can affect installation costs. Energy Saving Trust identifies these as factors behind price differences. Source: Energy Saving Trust
Request a clear explanation of any provisional charges. If roof work is recommended, establish whether it is included in the quotation or needs a separate contractor.
Additional requirements
Ask whether the price includes any electrical upgrades, monitoring equipment and network paperwork required for your installation. Resolve these questions before accepting a quote so you can budget for the complete project.
How much do solar panels cost with a battery?
Battery storage adds to the initial investment. Energy Saving Trust gives a typical battery-storage cost of around £5,000–£8,000. The price of a combined solar-and-battery installation needs its own quotation; adding separate national benchmarks will not necessarily reflect a package price. Source: Energy Saving Trust
A battery can store daytime solar generation for use later. To assess whether it offers value, ask for two proposals: solar panels alone, and the same installation with storage.
If you are considering storage, explore Electric11’s home battery storage options. Ask for quotes with and without a battery so you can compare the additional investment with the projected savings.
For the battery option, request:
- Usable storage capacity in kWh.
- Maximum charging and discharge power.
- Warranty terms.
- Estimated additional annual savings.
- Expected replacement costs.
- Details of any backup-power capability.
Compare the additional cost with the additional benefit. A higher projected saving does not automatically mean a shorter payback period.
Do you pay VAT on solar panels?
Qualifying residential solar-panel installations currently benefit from 0% VAT until 31 March 2027. Eligible battery installations also fall within the relief.
Under the published rules, qualifying installations revert to 5% VAT from 1 April 2027. Ask your installer to confirm the rate applicable to your project and installation date. Source: HMRC
Can you receive payments for exported electricity?
Eligible households in England, Scotland and Wales can receive payments for exported electricity through the Smart Export Guarantee, or SEG.
Suppliers set their own tariff terms, so compare rates and eligibility requirements before choosing a provider. Your export-payment provider can be different from your electricity supplier. Northern Ireland has separate arrangements. Source: Ofgem
When reviewing a savings forecast, ask the installer to show export income separately from reductions in electricity purchases.
How long do solar panels take to pay for themselves?
Include ongoing care in your budget. Electric11 offers solar panel servicing and maintenance, including system inspections and performance checks. Ask which services your proposed installation may need and what they cost.
A useful starting calculation is:
Simple payback = total installation cost ÷ estimated annual financial benefit
For illustration, a system costing £8,000 with an annual benefit of £800 would have a simple payback of ten years. These figures demonstrate the calculation; they are not a forecast for your home.
A more complete assessment should account for maintenance, equipment replacement, financing costs and changes in energy tariffs.
Ask for the assumptions behind any payback estimate, including:
- Expected annual electricity generation.
- How much generation you are expected to use at home.
- The electricity purchase price used.
- The export rate assumed.
- Any ongoing costs included.
This makes it easier to compare proposals on the same basis.
How to compare solar installation quotes
Request itemised proposals and give each installer the same information about your property and electricity consumption.
Check whether differences in price reflect different equipment, installation work or savings assumptions. Ask who handles warranty claims and what support is available after installation.
If you are considering finance, compare the total amount repayable as well as the monthly payment. Keep installation costs and borrowing costs visible in your decision.
Discuss your solar project with Electric11
Ready to explore solar panels for your property? Contact Electric11 for a solar installation quote and discuss your electricity use, available roof space and budget.
Have a recent electricity bill ready, and mention any plans for electric heating or home EV charger installation. Ask for an itemised proposal so you can assess the upfront cost, expected performance and ongoing support together.
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