Solar Panel Finance UK (2026): 0% Deals, Loans, Pay Monthly & Subscriptions Compared
Solar is a good investment that most people can’t pay for in cash, and the way you borrow decides whether it stays a good investment. The same £7,000 system costs £7,000 at a genuine 0%, about £8,800 on a decent loan, £11,000 on typical installer finance and nearly £16,000 on a 15-year deal — before you get to the £69-a-month subscriptions. This guide sets out every option available in Britain in 2026 with the real numbers, shows you when the monthly payment is covered by the bill saving and when it isn’t, and flags the two tricks that turn “0%” and “no upfront cost” into the most expensive solar in the country.
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What each option really costs on a £7,000 system
Take a typical 4kW system at £7,000 installed with 0% VAT. Here’s what you’d actually pay by route, using rates on offer in September 2026 (representative APRs; your rate depends on credit score and lender):
| How you pay | Rate · term | Monthly | Total paid | Interest | Who it suits |
|---|---|---|---|---|---|
| Cash / savings | — | — | £7,000 | £0 | Anyone who can; savings rates are below solar’s 10–13% return |
| E.ON Next 0% finance | 0% · 3 yrs | £194 | £7,000 | £0 | E.ON packages only; high monthly, gone in 3 years |
| Nationwide 0% Green Additional Borrowing | 0% · 5 yrs | £117 | £7,000 | £0 | Existing Nationwide mortgage holders, £5k–£20k, ≤90% LTV |
| Octopus finance (Zopa, at launch) | 4.9% · 10 yrs | £74 | £8,869 | £1,869 | Octopus installs; check current rate |
| Bank personal loan | 6.5% · 7 yrs | £104 | £8,731 | £1,731 | Good credit; any installer |
| EDF / Hive finance (Zopa) | 8.9% · 10 yrs | £88 | £10,595 | £3,595 | Convenient; dearer than your bank |
| Typical installer finance | 9.9% · 10 yrs | £92 | £11,054 | £4,054 | Common; interest ≈ 4–5 years of savings |
| Long installer finance | 12.9% · 15 yrs | £88 | £15,859 | £8,859 | Avoid — interest exceeds the panels |
| Sunsave / Hive subscription | 8.6% rep · 20 yrs | £69 | £16,560 | ≈ £9,000 vs buying* | No capital, wants zero hassle; includes insurance & replacements |
*Subscription system typically larger than 4kW and includes battery/inverter replacement and insurance over the term, so it isn’t a pure interest figure. Two things jump out. The gap between the best and worst borrowing route is nearly £9,000 on a £7,000 purchase. And the monthly payments look similar across very different deals — £74, £88, £88, £92 — because the expensive ones stretch the term. Always compare total paid, not the monthly. Solar panel cost UK has the system prices these sit on top of.
0% finance solar panels — the real ones and the fake ones
“0% finance solar panels” is one of the most-searched phrases in UK solar, and the answer has two halves.
Genuine 0% in 2026:
- E.ON Next — 0% APR over up to three years on its solar and battery packages (7.9% over five or ten). On the £6,495 twelve-panel package that’s about £180 a month for 36 months. Real, and rare among suppliers. E.ON solar review.
- Nationwide 0% Green Additional Borrowing — existing Nationwide mortgage customers can add £5,000–£20,000 to their mortgage at 0% for a two- or five-year term (up to 90% LTV) for green improvements including solar; over 5,000 households have used it since 2023, average loan around £13,000, and Nationwide said in March 2026 it aims to double take-up. After the 0% period the balance moves to a standard rate, so plan to clear it inside the term. If you have a Nationwide mortgage, this is the best solar finance in the country.
- Occasional installer promotions — genuine 0% over 12–24 months appears from time to time, usually from larger firms with a finance partner subsidising it. Ask for the cash price too (see below).
The fake ones. A lot of “0% finance” in solar is the interest loaded into the system price: the £7,000 system becomes £8,500 “with 0% finance”. The lender still gets paid; you just paid them upfront. The test takes one question: “What’s the price if I pay cash?” If the cash price is lower, the finance isn’t 0%, and you should divide the difference by the borrowing to see the real rate — often 10% or more. Octopus, Hive/Sunsave and Tesla systems are frequently searched with “0 finance” attached; none of them offers 0% as standard (Octopus is via Zopa at a published rate, Hive via Zopa at 8.9% or the subscription, Tesla through its installers). “Free” and “no upfront cost” solar covers the adverts that blur finance into grants.
Installer finance: who lends, what it costs, and Section 75
Most national and many local installers are FCA-authorised credit brokers who place your loan with a panel of lenders — Zopa (Octopus, EDF, Hive), Novuna, Propensio, Tandem, Barclays Partner Finance historically and others. Typical terms in 2026: 7.9–12.9% APR over 5–15 years, often with a deposit, sometimes with an option to settle early without penalty (check — some charge). The convenience is real: one signature, no separate application, and the finance is set up around the install date.
Three things to know. It’s usually dearer than your bank — a customer with decent credit can beat 8.9% with a personal loan. It gives you Section 75 protection: if the installer fails or the system is faulty and the purchase was made on a regulated credit agreement of £100–£30,000, the lender is jointly liable — which, after a year in which Effective Home and others collapsed, is worth something (see solar panel companies UK). And the term matters more than the rate: 9.9% over five years costs £1,900 in interest on £7,000; over fifteen it costs £6,000. Never let the salesperson quote the monthly without the total.
Bank loans and green loans
An unsecured personal loan from a bank or building society is the benchmark. In 2026, borrowers with good credit are seeing roughly 6–7% APR on £7,000–£15,000 over 5–7 years; several banks brand these as “green loans” with a small discount for eligible improvements including solar, though the discount is often 0.5% or less — compare the APR, not the label. Advantages: you choose any installer (which is how you get the local quote that’s £1,000–£2,000 under the nationals), you can settle early cheaply, and the installer treats you as a cash buyer. Disadvantage: no Section 75 unless you pay the deposit on a credit card, which you should. A £7,000 loan at 6.5% over seven years is £104 a month — more than the £60–£80 monthly saving in the early years, less once prices rise, and it’s done in year seven with 18 years of free electricity to follow.
Get the cash price first — then decide how to pay
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Get My Cash Quote →Mortgage further advances and green mortgages
Adding the cost to your mortgage is the cheapest rate most people can get — currently around 4–5.5% for a further advance — and Nationwide’s 0% green version is cheaper still. Several lenders (Halifax, Barclays, NatWest, Virgin and others) run green mortgage or “greener home” schemes with cashback or rate reductions for improvements that lift the EPC, which solar does by 5–15 points. The catch is the term: a £7,000 advance spread over the remaining 20 years of a mortgage at 4.5% costs about £3,600 in interest, more than a 7-year personal loan at 6.5%, unless you overpay it. Set the advance up on a short term or overpay it deliberately, and it’s excellent; let it run for 20 years and it isn’t. Solar panels and EPC and home value cover the mortgage-side benefits.
Subscriptions and leases: £0 upfront, £16,560 later
The fastest-growing way to “pay monthly” for solar is a subscription: Sunsave (sold directly and through British Gas’s Hive) at £69 a month for 240 months — £16,560 over twenty years at a representative 8.6% APR — and Glow Green’s subscription model with a 20-year warranty. You pay nothing upfront; the provider owns the system for the term; the package includes monitoring, insurance (Aviva-backed at Sunsave) and battery and inverter replacement, which is a genuine benefit worth £4,000–£5,000 over twenty years.
When a subscription makes sense
- No savings, no mortgage headroom, and a bill saving that exceeds £69 a month.
- You want zero involvement — repairs, replacements and insurance handled.
- You’ll stay in the house for most of the term.
When it doesn’t
- You can pay cash or borrow under ~7%: owning costs £5,000–£9,000 less over twenty years.
- You may move: transfer needs the buyer’s agreement and the provider’s approval; buyout costs thousands.
- You want the export income and the asset: check whose they are.
Old-style rent-a-roof leases (2010–2015) are a different animal — the company took the Feed-in Tariff and you got free daytime power — and they complicate selling; see moving house with solar. Full subscription maths is in the Hive review.
Government solar loans: what exists and what’s coming
There is no live UK government solar loan in September 2026. The Green Deal — the pay-as-you-save loan attached to the electricity bill — closed to new plans in 2015 (a few legacy agreements still run and transfer with the property). Home Energy Scotland’s interest-free solar loan has been withdrawn; only a loan of up to £5,000 for hybrid PV-T remains. Wales and Northern Ireland have no solar loan. What’s coming: the Warm Homes Plan includes a proposed £5 billion programme of low- or zero-interest loans for solar, batteries and heat pumps aimed at households that don’t qualify for grants; the government has said details will follow later in 2026. There is no application route yet, and any site “registering interest” is not official. If a 0% government loan launches, it will reshuffle everything on this page — we’ll update it the day it does. Grants (which you don’t repay) are a separate question: solar grants UK.
Pay monthly vs bill saving: does it cover itself?
The question behind every “solar panels pay monthly” search is whether the panels pay the loan. For a 4kW system saving £700–£950 a year — £60–£80 a month at 2026 prices, rising with electricity prices — here’s how the repayments compare:
| £7,000 system | Monthly repayment | vs £60–£80 monthly saving | Cash position during loan | After the loan |
|---|---|---|---|---|
| 0% · 3 yrs (E.ON) | £194 | −£115 to −£135/mo | Out of pocket for 3 years | 22 years of full saving |
| 0% · 5 yrs (Nationwide) | £117 | −£40 to −£55/mo | Slightly out of pocket for 5 years | 20 years of full saving |
| 4.9% · 10 yrs | £74 | ≈ break-even | Roughly neutral | 15 years of full saving |
| 6.5% · 7 yrs | £104 | −£25 to −£45/mo | Modestly out of pocket | 18 years of full saving |
| 8.9% · 10 yrs | £88 | −£10 to −£30/mo | Slightly negative | 15 years, but £3,600 interest paid |
| 9.9% · 10 yrs | £92 | −£10 to −£30/mo | Slightly negative | 15 years, £4,000 interest paid |
| 12.9% · 15 yrs | £88 | −£10 to −£30/mo | Negative for 15 years | 10 years, £8,900 interest paid |
| Subscription £69 · 20 yrs | £69 | ≈ break-even (bigger system) | Roughly neutral | 5 years; you may not own it |
The honest reading: almost no finance route is cash-positive from month one on a 4kW system at today’s prices — the saving is £60–£80 and the repayment is £70–£195. What changes the picture is the term: a short 0% or low-rate loan leaves you slightly out of pocket for a few years and then hands you two decades of free electricity, while a long high-rate loan makes the monthly look painless and quietly costs more than the panels. A larger system, a battery on a time-of-use tariff, or an EV charged from the roof pushes the saving to £100–£150 a month and makes the low-rate routes cash-positive. Run your own numbers in the calculator.
Is financing solar panels worth it?
Solar returns roughly 10–13% a year tax-free over 25 years. Borrowing to buy it is worth it when the cost of borrowing is clearly below that return and the loan is gone well before the panels are. In practice:
- 0% or under ~5%: yes, clearly — the return beats the rate by a wide margin and you keep the capital.
- 5–7% over 5–10 years: yes, marginally — interest of £1,700–£1,900 on £7,000 costs two years of savings; you’re still well ahead over 25.
- 8–10% over 10 years: borderline — interest of £3,600–£4,000 eats four to five years of savings; only if you’d otherwise not install before the VAT rise in March 2027 and can’t get a better rate.
- 10%+ over 12–15 years: no — the interest matches or exceeds the system cost, payback stretches past 15 years, and you’ve turned a good investment into a poor one. Save for a year instead.
The one legitimate reason to accept a slightly worse rate is timing: 0% VAT ends on 31 March 2027, worth £350 on a £7,000 system, and electricity prices tend to rise. Neither justifies a 12.9% loan. Are solar panels worth it and buy now or wait cover the underlying decision; the disadvantages lists dear finance as one of the nine.
Commercial and business solar finance
Businesses have options homeowners don’t, and better tax treatment. Asset finance / hire purchase: the system is financed over 5–10 years, typically 6–9% APR, VAT reclaimed as normal, and the 100% Annual Investment Allowance still applies to purchased kit. Operating lease: lower payments, off-balance-sheet for some, but you don’t own the asset and lose the AIA. Power purchase agreement (PPA): a funder installs and owns the system on your roof and sells you the power at a fixed rate below grid price for 15–25 years — zero capital, no ownership, popular for 100kW+ roofs. Green business loans from the high-street banks at competitive rates for EPC-improving work. With commercial payback at 4–7 years and no business rates on the panels to 2035, most finance routes are cash-positive from year one. Commercial solar panels has the numbers; farms and schools have their own.
Selling a house with financed panels
Loan or installer finance: you own the panels; they go with the house and typically add £2,000–£6,000 to the price. The loan is yours — settle it from the proceeds (check for early-settlement charges) or keep paying. Simple. Subscription or lease: the provider owns the system. Either the buyer takes over the agreement (they must pass the provider’s checks and want to) or you buy it out at a price set by the contract — often several thousand pounds mid-term. Lenders and solicitors ask about it; some buyers walk. Get the transfer and buyout schedule in writing before you sign, and read moving house with solar panels.
A fixed price to take to your lender
Vetted local installers quote in writing with named kit and a ten-year workmanship guarantee — the number you need before you borrow a penny. Free survey, no obligation.
Match Me With a Local Installer →The traps: mis-selling, pressure and fake zeros
Solar finance has history. In the 2010s thousands of homeowners were sold systems on 10–15 year credit agreements — often through Barclays Partner Finance and similar lenders — with promises that the panels would “pay for themselves” through the Feed-in Tariff; many didn’t, and the Financial Ombudsman upheld a large number of mis-selling complaints, with lenders liable under Section 75. If you have one of those agreements, a complaint to the lender is still possible. For 2026 buyers, the same patterns to watch:
- “No upfront cost” presented as if it were free: it’s a loan. Ask for the APR, term and total payable.
- “0% finance” without a cash price: the interest is in the price.
- Savings projections that assume 8–10% annual electricity price rises to make a 12.9% loan look self-funding. Use 3%.
- Sign-today discounts. Regulated credit gives you 14 days to cancel regardless; a fair installer gives you a week to think regardless of that.
- Unregulated “finance” from an installer that isn’t an FCA-authorised broker: no Section 75, no Ombudsman.
Protections that work in your favour: Section 75 on credit agreements £100–£30,000; the 14-day cooling-off period; HIES/RECC deposit protection and their ombudsman route; and paying any deposit by credit card even if the balance is a bank loan. Solar panel scams and how to choose an installer cover the rest.
How to arrange it: a five-step order
- Get the cash price from at least two installers, one of them local. Everything else is measured against it. Finding a local installer.
- Check the 0% routes first: Nationwide mortgage customer? E.ON package a fit? Any genuine installer 0% promotion with the same cash price?
- Get a personal-loan quote from your bank (soft search) and compare the APR with the installer’s finance. Take whichever is cheaper — the installer will usually match a real bank rate rather than lose the job.
- If you have mortgage headroom, price a further advance on a short term or with a plan to overpay.
- Pay the deposit by credit card whatever route you choose, keep the total-payable figure from the credit agreement, and diarise the end date.
The bottom line on solar panel finance
Solar is worth borrowing for at 0% and worth borrowing for at 5–7% over ten years or less; it is not worth borrowing for at 10–13% over fifteen, and it is rarely worth subscribing to at £69 a month for twenty if you have any other option. On a £7,000 system the difference between the best and worst route is nearly £9,000 — more than the panels — and the monthly payment tells you almost nothing about which you’re on.
Get the cash price, test every “0%” against it, check Nationwide and your bank before you sign the installer’s paperwork, keep the term short, and pay the deposit on a card. Do that and finance turns solar from something you can’t afford into something that pays for itself — which is what it was supposed to do.
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Solar panel finance: frequently asked questions
Can you get solar panels on finance in the UK?
Yes, in five main ways: installer finance arranged at the point of sale (typically 7.9–12.9% APR over 5–15 years, with a few genuine 0% deals such as E.ON Next’s over up to three years); a bank or green personal loan at around 6–7% APR for good credit; additional borrowing on your mortgage, including Nationwide’s 0% Green Additional Borrowing of £5,000–£20,000 over two or five years for existing customers; a subscription such as Sunsave’s £69 a month over 20 years; and, for businesses, asset finance or a power purchase agreement. Most installers take a deposit and the balance on commissioning if you pay cash.
Is 0% finance on solar panels real?
Sometimes. E.ON Next offers 0% APR over up to three years on its packages, and Nationwide mortgage customers can borrow £5,000–£20,000 at 0% over two or five years for solar under its Green Additional Borrowing. Many installer “0% deals” are different: the interest is built into a higher system price, so you pay it anyway. The test is simple — ask for the cash price and the 0% price; if they differ, the finance isn’t free. Genuine 0% over three to five years is the cheapest way to buy solar without capital.
How much does it cost to finance solar panels?
On a £7,000 system: nothing extra at a genuine 0%; about £1,700–£1,900 in interest at 4.9–6.5% APR over 7–10 years; £3,600 at 8.9% over 10 years; £4,000 at 9.9% over 10 years; and almost £8,900 at 12.9% over 15 years — more than the panels cost. Subscriptions are dearer still: £69 a month for 240 months is £16,560. Because a 4kW system saves £700–£950 a year, finance above about 7% APR eats most of the first decade’s saving, and 15-year terms at double-digit rates can wipe it out.
Is it worth financing solar panels?
It’s worth it when the repayment is close to or below the monthly saving and the rate is under about 7% — a £7,000 system at 0% over five years costs £117 a month against a £60–£80 monthly saving, and you own an asset that then saves for twenty more years; at 4.9% over ten years the £74 repayment is covered by the saving from day one. It isn’t worth it at 10–13% over 10–15 years, where interest adds £4,000–£9,000 and the panels take 15-plus years to break even. If you can pay cash or borrow cheaply, buy; if the only option is high-rate installer credit, wait, save, or look at a green mortgage advance first.
Does the government offer solar panel loans in the UK?
Not yet. The Green Deal loan scheme closed in 2015, Scotland’s Home Energy Scotland interest-free solar loan has been withdrawn, and there is no live UK government solar loan in September 2026. The Warm Homes Plan includes a proposed £5 billion programme of low- or zero-interest loans for solar, batteries and heat pumps, with details promised later in 2026 — but no application route exists and any website taking “registrations” isn’t official. Grants (not loans) are available for lower-income households through the Warm Homes: Local Grant and ECO4.
What happens to financed solar panels when you sell your house?
If you bought the panels on a loan or installer finance, you own them: they transfer with the house and the loan stays with you, so you settle it from the sale proceeds or keep paying. If you have a subscription or lease, the panels belong to the provider and the agreement must either be transferred to the buyer (who must be accepted by the provider) or bought out, which can cost thousands and can put off buyers and lenders. Always check the transfer and buyout terms before signing a 20-year agreement.
This guide is general information, not financial advice; Going Solar UK is not a lender, credit broker or financial adviser and receives no payment from any finance provider. Rates, terms and products are as published in September 2026 — E.ON Next, EDF, Hive/Sunsave, Octopus and Nationwide figures from their own pages and announcements — and change frequently; representative APRs depend on credit status and the rate you’re offered may differ. Repayment figures are standard amortisation calculations on a £7,000 example and exclude fees. Savings assume ~25p/kWh import and 12p export. Section 75 and cooling-off rights apply to regulated credit agreements as set out in the Consumer Credit Act 1974 and Consumer Contracts Regulations 2013. Consider taking independent financial advice before borrowing.