Solar Panels on Finance: No Deposit Options
Can I get solar panels with no deposit?
Yes, you can get solar panels with no deposit. Some installers offer 0% deposit finance over 5–10 years, meaning you pay nothing upfront. Monthly payments for a 4kW system: £56–£113 depending on term and interest rate. Some 0% interest deals are available (total cost = cash price). Your monthly electricity savings (£48–£68) often cover most or all of the payment — making solar near cash-flow neutral from month one.
No-Deposit Finance Options
Option 1: Installer 0% Interest Finance (best deal) - Deposit: £0 - APR: 0% - Term: 3–5 years - Monthly payment (4kW at £6,750): £113–£188 - Total repayable: £6,750 (same as cash price) - Availability: Some larger installers — ask specifically
Option 2: Installer Low-Interest Finance - Deposit: £0 - APR: 3.9–9.9% - Term: 5–10 years - Monthly payment (4kW at £6,750, 5.9% APR, 10 years): £74 - Total repayable: £8,880 (£2,130 interest) - Availability: Many installers via FCA-regulated finance partners
Option 3: Personal Loan (bank/building society) - Deposit: £0 (full loan covers system cost) - APR: 3–7% (credit score dependent) - Term: 1–7 years - Monthly payment (£6,750, 5% APR, 7 years): £95 - Total repayable: £7,985 (£1,235 interest) - Availability: All major banks and building societies
Option 4: Home Energy Scotland Loan (Scotland only) - Deposit: £0 - APR: 0% - Amount: up to £7,500 for solar - Term: up to 10 years - Monthly payment: £56–£63 - Availability: Scottish residents only, via homeenergyscotland.org
Source: Installer finance offerings; bank loan rates; HES loan terms.
Monthly Payments vs Monthly Savings
The key question: do your monthly solar savings cover the monthly finance payment?
4kW system — various finance terms:
| Finance Term | APR | Monthly Payment | Monthly Saving | Net Monthly Cost | |-------------|-----|----------------|---------------|------------------| | 5 years, 0% | 0% | £113 | £48–£68 | £45–£65 | | 7 years, 5% | 5% | £95 | £48–£68 | £27–£47 | | 10 years, 5% | 5% | £72 | £48–£68 | £4–£24 | | 10 years, 0% (Scotland) | 0% | £56 | £48–£68 | –£12 to +£8 |
At 10 years, 5% APR: Your net monthly cost is £4–£24 — near cash-flow neutral. After year 10, payments stop and you keep saving £48–£68/month for the remaining 15+ years.
Scotland at 0% over 10 years: Your monthly saving MAY EXCEED the payment — solar is literally paying for itself from month one.
After the finance is paid off: £48–£68/month of pure savings for 15+ more years = £8,640–£12,240 additional profit.
Source: Finance calculation; Ofgem Q1 2026.
What to Check Before Signing Solar Finance
- Total repayable amount — this is the TRUE cost. Compare to the cash price. If total repayable is much higher, you are paying significant interest.
- APR (Annual Percentage Rate) — the standardised interest rate. Lower = cheaper. 0% is best. Under 5% is good. Above 10% is expensive.
- FCA regulation — the finance provider MUST be FCA-regulated. Check at register.fca.org.uk. Unregulated lenders are illegal for consumer credit.
- Early repayment terms — can you pay off early without penalties? Most good finance deals allow this.
- Cooling-off period — consumer credit agreements have a 14-day cooling-off period. You can cancel the finance (and the installation) within 14 days.
- Balloon payment — some deals have low monthly payments but a large final payment. Check the repayment schedule.
- System price — is the cash price inflated to cover 'free' finance? Compare the system price against independent cash-only quotes.
- Secured vs unsecured — NEVER secure solar finance against your home. Use unsecured personal credit only.
Finance vs Saving Up: Which Is Better?
Saving up to pay cash: - Time to save £6,750 at £200/month: 2.8 years - Savings missed while saving: £1,624 (2.8 years × £580/year) - Total cost: £6,750 + £1,624 missed savings = £8,374 effective
Financing at 5% APR over 7 years: - Interest paid: £1,235 - Savings during finance period: £4,060 (7 years × £580/year) - Total cost: £6,750 + £1,235 interest = £7,985 - Savings offset: –£4,060 - Net effective cost: £3,925
Finance wins by £4,449 because you start saving immediately instead of missing 2.8 years of generation.
The conclusion: Even with 5% interest, financing solar and starting to save immediately beats saving up and waiting. The electricity savings you miss while saving exceed the interest you pay on the loan.
Source: Financial comparison methodology.
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