Solar Panel Financing UK: 2026 Guide
Most UK homeowners pay between £5,000 and £10,000 for solar panels in the UK. You don't need to pay it all upfront: green loans from banks and lenders, plus installer payment plans, let you spread the cost of solar panel financing over 3 to 10 years, often with positive cash flow from day one.
Last updated March 2026
Fact-checked by John Rooney, Solar Energy Editor. Editorial policy
Quick Answer
Most UK homeowners finance solar panels through a green personal loan (from 3% APR) or pay upfront. A typical £6,000 cost financed over 5 years costs ~£110/month — often less than the ~£90/month electricity savings, meaning positive cash flow from day one.
This page is for informational purposes only and does not constitute financial advice. Always compare rates from multiple lenders and consider your personal financial situation.
How Do You Pay for Solar Panels in the UK?
A typical residential solar PV system costs £5,000–£11,000 including VAT. Most UK homeowners pay £5,000–£10,000 out of pocket for a standard installation.
You have several ways to cover this cost. Paying cash gives you the lowest total price. If that is not an option, green personal loans from banks and lenders offer competitive rates, and some installers provide their own payment plans. See our full cost breakdown for detailed pricing by system size. The right choice depends on your savings, monthly budget, and how quickly you want to own the system outright.
“Green personal loans are increasingly popular for solar panel installations, with many UK lenders offering preferential rates for energy efficiency improvements.”
Average Cost
Green Loan APR
Annual Solar Savings
How Do UK Grants and Incentives Reduce Your Solar Financing Costs?
The UK government supports solar PV through the Smart Export Guarantee (SEG), which pays you for surplus electricity exported to the grid. VAT on residential solar installations is 0% (until March 2027), reducing the upfront cost. Some local authorities also offer additional grants or interest-free loans for energy efficiency improvements.
The ECO4 scheme and the Great British Insulation Scheme may help lower-income households with energy efficiency measures including solar, depending on eligibility.
Key facts
- ✓ 0% VAT on residential solar installations (until March 2027)
- ✓ Smart Export Guarantee pays for exported electricity
- ✓ ECO4 and local authority grants may apply
- ✓ Must use an MCS-certified installer for SEG eligibility
What this means for financing
- ✓ 0% VAT saves hundreds of pounds on installation
- ✓ SEG income helps offset loan repayments
- ✓ Check local authority grants before arranging finance
- ✓ You will typically finance the full installation cost
See our full Solar Grants Guide for eligibility details, application steps, and the latest information.
What Are the Solar Financing Options in the UK?
There are five main ways to pay for solar panels in the UK. Here is how they compare for a typical £7,000 solar panel installation.
| Option | Typical APR | Term | Total Cost (on £7,000) | Best For |
|---|---|---|---|---|
| Cash Payment | 0% | N/A | £7,000 | Lowest total cost |
| Green Personal Loan | 3–6% | 3–7 years | £7,500–£8,400 | Competitive rates, flexible |
| Bank Home Improvement Loan | 5–8% | 3–10 years | £7,900–£8,800 | Existing bank customers |
| Installer Payment Plan | ~7.5% | 1–10 years | ~£8,600 | Convenience, point-of-sale |
| Standard Personal Loan | 7–12% | 3–5 years | £8,000–£9,400 | When green loans are unavailable |
Total costs are estimates based on £7,000 loan over 5 years. Actual rates depend on your lender, credit profile, and loan term. Always check the specific APR and total amount repayable before signing.
How Do Green Personal Loans Work for Solar in the UK?
Many UK lenders offer green personal loans at 3% to 7% APR with terms of 3 to 7 years and loan amounts from £5,000 to £25,000. These dedicated "green" or "home improvement" loan products come at reduced rates specifically for energy efficiency upgrades including solar PV.
Some lenders, including building societies and specialist green finance providers, offer particularly competitive rates for MCS-certified solar installations. It is worth comparing offers from multiple lenders to find the best deal.
Advantages
- ✓ Competitive rates, often 3–6% APR
- ✓ No early repayment penalties with many lenders
- ✓ Quick online applications and fast decisions
- ✓ Unsecured, so no risk to your property
- ✓ Dedicated green rates lower than standard personal loans
Things to check
- • Rates depend on your credit score and loan amount
- • Rates vary significantly between lenders
- • Some require proof of the energy improvement
- • Maximum loan amounts vary by lender
- • Check if the green rate applies specifically to solar
Example: Green Personal Loan for Solar
Loan amount: £7,000 | APR: 5% | Term: 5 years | Monthly repayment: ~£132 | Total repayable: ~£7,900 | Interest cost: ~£900.
Rates and terms are illustrative. Compare offers from multiple lenders for their current green loan rates.
Which UK Banks and Lenders Offer Green Loans for Solar Panels?
Several major UK banks and building societies offer green personal loans for solar panel installations at 3–7% APR, typically 1–2% below their standard personal loan rates.
Specialist green finance providers also offer competitive rates for solar installations. Using an MCS-certified installer may be required to qualify for green loan rates.
| Lender Type | Product | Typical APR | Loan Range | Max Term |
|---|---|---|---|---|
| High Street Banks | Green Home Improvement Loan | From 3.5% | £1,000–£50,000 | 7 years |
| Building Societies | Green Personal Loan | From 3.0% | £5,000–£25,000 | 5 years |
| Specialist Green Lenders | Solar Finance | From 4.5% | £3,000–£25,000 | 10 years |
| Installer Finance Partners | Point-of-Sale Finance | From 6.9% | £2,000–£30,000 | 10 years |
Rates as of early 2026. Check each lender's website for current rates. Your EPC (Energy Performance Certificate) or MCS installation certificate may be required as proof of the energy upgrade.
Tips for green loans
- ✓ Apply with your existing bank first for potentially faster approval
- ✓ Have your MCS certificate or installer quote ready as proof of the energy upgrade
- ✓ Compare the total amount repayable, not just the APR
- ✓ Ask about early repayment fees before signing
- ✓ Use comparison websites like MoneySuperMarket or Uswitch for side-by-side rate comparisons
Does Financing Change the Payback Period?
Yes, but only by 1–3 years. A cash purchase pays back in 5–7 years, while a financed system pays back in 7–10 years depending on your interest rate. Monthly electricity savings of £80–£115 often match or exceed loan repayments, giving you positive cash flow from day one.
Worked Example: Financing a 4.4 kWp System
| System cost (with 0% VAT) | £7,000 |
| 0% VAT saving | ~£1,200 saved vs. standard VAT |
| Amount to finance | £7,000 |
| Loan APR | 5% |
| Loan term | 5 years |
| Monthly repayment | £132 |
| Total repaid (including interest) | £7,900 |
| Total interest cost | £900 |
Monthly Loan Repayment
Monthly Solar Savings
Net Monthly Cost
Annual solar savings of £1,000–£1,400 mean your monthly savings (£80–£115) nearly match the loan repayment (£132). After the 5-year loan ends, the system generates free electricity for another 20+ years.
Even with £900 in interest, the total cost of ownership with financing (£7,900) is still far less than the £25,000+ in electricity savings over the system's 25-year lifetime.
Know What You Need to Finance
Get free quotes from MCS-certified installers to know your exact cost, or use our solar calculator to estimate your system size and savings. Adding a battery will increase the loan amount but also increase your savings.
Get Free QuotesHow Should You Finance Solar Panels in the UK?
Get Multiple Quotes First
Get at least 3 quotes from MCS-certified installers before arranging finance. Knowing the exact cost helps you borrow only what you need. Prices vary 15–25% between installers.
Confirm 0% VAT Eligibility First
Ensure your installation qualifies for 0% VAT (residential solar PV installed by an MCS-certified installer). This saves you £1,000–£1,400 and reduces the amount you need to finance.
Compare APRs Widely
Check your existing bank, building societies, and specialist green lenders. Use comparison sites like MoneySuperMarket or Uswitch. A 2% difference in APR saves £300–£500 in interest.
Check Early Repayment Penalties
Many lenders allow early repayment without penalty, but some may charge a fee. If you might pay off the loan early (using savings or a lump sum), choose a lender with no early repayment charge.
Ensure the Installer is MCS-Certified
Using a non-certified installer means you cannot register for the Smart Export Guarantee and may void your green loan eligibility. Always verify your installer is on the MCS certified list before signing anything.
Factor in Export Income
Under the Smart Export Guarantee (SEG), you can sell surplus electricity back to the grid. SEG tariffs vary by supplier but typically range from 3–15p/kWh. This export income improves your cash flow and shortens the payback period, even with financing costs.
Frequently Asked Questions About Solar Financing
Can I get a loan for solar panels in the UK?
Yes. Most major UK banks and building societies offer personal loans that can be used for solar panel installation. Many now offer dedicated green loans at reduced interest rates specifically for energy upgrades including solar PV systems.
What is the best way to finance solar panels in the UK?
Green personal loans from banks or building societies are often the best option for most homeowners. They typically offer rates of 3 to 7% APR with flexible terms. If you have savings, paying cash gives the lowest total cost. Always compare at least three lenders before committing.
Do banks offer green loans for solar?
Yes. Many UK banks and building societies now offer dedicated green or home improvement loans at reduced rates. Typical APR is 3 to 7% with terms of 3 to 7 years. Specialist green finance providers also offer competitive rates. Compare offers from multiple lenders for the best deal.
Is there 0% finance for solar panels in the UK?
There is no widely available 0% finance scheme for solar panels in the UK. Some installers may occasionally run promotional offers, but these are rare and should be checked carefully for hidden fees or higher system prices. However, residential solar installations benefit from 0% VAT, saving you around £1,000–£1,400 on the upfront cost.
Can I get solar panels with no upfront cost?
There is no government-backed zero-upfront-cost scheme for most homeowners. However, financing with a green loan means your monthly repayments can be largely offset by monthly electricity savings, resulting in a low net cost from the start. The ECO4 scheme may help lower-income households with energy efficiency measures.
How much do solar panels cost with 0% VAT?
With 0% VAT on residential installations, most UK homeowners pay £5,000 to £10,000 for a solar PV system in 2026. A typical 10-panel (4.4 kWp) system costs £5,500 to £7,500. The exact price depends on system size, equipment brand, and installer.
Is financing solar panels worth it?
Yes, in most cases. Even with loan interest, the total cost of a financed solar system is typically recovered within 7 to 10 years through electricity savings and export income. After the loan is paid off, you get 20+ years of near-free electricity. The key is to secure the lowest APR you can and keep the loan term to 5 years or less.
Can I claim tax relief on solar panel financing?
Homeowners cannot claim tax relief on solar panel loan interest. However, residential solar PV installations benefit from 0% VAT. Under the Smart Export Guarantee, you are paid for surplus electricity exported to the grid. Businesses can claim capital allowances on solar investments, which can include financed equipment.
Related Guides
Sources
- Energy Saving Trust – Solar Panels: energysavingtrust.org.uk
- Ofgem – Smart Export Guarantee: ofgem.gov.uk
- MCS – Find a Certified Installer: mcscertified.com
- GOV.UK – VAT on Energy-Saving Materials: gov.uk
- MoneySuperMarket – Green Loans: moneysupermarket.com
- HMRC – Capital Allowances for Businesses: gov.uk
Rates verified early 2026. Always confirm current APR directly with your lender.
John Rooney is the founder of Solar Info and has been covering the UK solar energy market since 2023. He fact-checks all content against official MCS and Ofgem data and maintains relationships with MCS-certified installers across the UK.
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