Solar Panel Cost Calculator — UK Prices 2025
Solar Panels Cost Calculator
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A typical home needs 10–16 panels
Include battery storage?
Stores excess solar energy for evening use
Prices automatically adjust for your region
Fill in the details on the left to see your cost estimate
How much does solar panels cost in the UK?
Use our calculator above to get an accurate estimate based on your specific requirements. Prices are based on real quotes from UK tradespeople and updated quarterly.
What affects the cost of solar panels?
- Location: London and the South East are 15–40% more expensive than the national average.
- Size and complexity: Larger or more complex jobs cost proportionally more.
- Material quality: Budget, mid-range and premium specifications can vary by 2–3x.
- Time of year: Demand peaks in spring and summer — book in winter for better availability and pricing.
- Access: Difficult access (scaffolding, confined spaces) adds to labour costs.
How to save money on solar panels
- Get at least 3 quotes from different tradespeople.
- Book during quieter periods (January–March for most trades).
- Be flexible on start dates — tradespeople often discount for convenient scheduling.
- Supply your own materials where possible (but confirm with your tradesperson first).
- Combine jobs — having multiple trades on site at once can reduce overall costs.
How to find a good tradesperson
Always check reviews on Checkatrade, Rated People or MyBuilder. Ask for references from recent similar jobs. Ensure they are appropriately qualified and insured. Never pay the full amount upfront — a deposit of 10–25% is standard.
Frequently asked questions
How much do solar panels cost in the UK?
A typical 4kWp solar panel system (10–12 panels) costs £6,000–£10,000 installed in 2025. Adding battery storage costs an additional £2,500–£6,000. Solar panels are zero-rated for VAT until 2027.
How much can I save with solar panels?
A typical UK home with solar panels saves £400–£700 per year on electricity bills. With battery storage, savings increase to £600–£1,000/year. The Smart Export Guarantee pays 15–20p/kWh for exported electricity.
What is the payback period for solar panels?
The average payback period for solar panels in the UK is 8–12 years. With battery storage, this extends to 10–15 years. After payback, panels generate free electricity for their remaining 20–25 year lifespan.
Do I need planning permission for solar panels?
In most cases, no. Solar panels on a pitched roof are permitted development as long as they do not protrude more than 200mm from the roof surface. Listed buildings and conservation areas may have restrictions.
Is there a government grant for solar panels?
Solar panels are zero-rated for VAT (0% instead of 20%), saving around 20% on installation costs. There is no direct cash grant for residential solar panels in 2025, but the Smart Export Guarantee pays for exported electricity.