TL;DR
Most UK homeowners won’t qualify for a solar grant — and that’s fine. 0% VAT on solar and batteries runs until 31 March 2027 and saves £1,000–£4,000 on a typical install, which everyone gets.
ECO4 covers owner-occupiers on qualifying benefits in leaky homes (EPC D–G). Scotland, Wales and Northern Ireland run their own schemes. The eligibility checker below tells you which path you’re actually on in 60 seconds.
Short answer: if you own your home, receive a qualifying benefit and your property is rated EPC D or worse, you might qualify for ECO4. Everyone else — most homeowners — pays for solar out of pocket, but with 0% VAT and widely available 0% finance, it’s cheaper than you’d think.
A quick note before the detail: “grant” gets used loosely online. A lot of content lumps together 0% VAT (a tax relief anyone can claim via their installer), ECO4 (a targeted energy-company obligation for low-income households), council-level top-ups, and the Smart Export Guarantee (an income stream, not a grant). This page separates them so you don’t waste an afternoon applying for something you can’t get. For the ROI side of the decision, see our are solar panels worth it guide or run the numbers in the savings calculator.
Quick eligibility checker
Seven short questions and a tailored recommendation. No email required — your answers stay in your browser. The result tells you which UK scheme to look at first (or confirms 0% VAT and 0% finance is your best route).
Eligibility checker · 60 seconds
See which UK solar schemes apply to you
Seven quick questions. No email, no phone. Your answers stay in your browser.
Answer all seven questions to see your result.
0% VAT on solar and batteries (applies to almost everyone)
This is the one most UK homeowners actually benefit from. Under HMRC VAT Notice 708/6, residential solar PV installs and standalone battery retrofits carry 0% VAT until 31 March 2027. That’s 20% off the VATable portion of your quote — £1,000–£4,000 on a typical domestic install.
It applies to the panels, the inverter, the battery (whether installed at the same time as solar or years later), and the labour. No application form, no eligibility test, no waiting list. Your installer builds it into the quote. If anyone quotes you 20% VAT on a domestic solar or battery install in 2026, that’s wrong — walk away.
Worth stressing: standalone battery retrofits (adding a battery to an existing non-solar home, or to an older solar system) also qualify. Before February 2024 they didn’t. That change alone made home batteries meaningfully cheaper. More on sizing in our battery storage guide.
The deadline matters. The 0% rate is scheduled to expire 31 March 2027. There’s been no government signal yet that it’ll be extended. If you’re planning to install by 2027, book a survey before autumn 2026 — installer diaries get busy in the final quarter before any VAT deadline.
ECO4 scheme
The Energy Company Obligation (ECO4) is the UK’s main funded-measure scheme for low-income households. It’s delivered by the big energy suppliers and regulated by Ofgem. It runs until March 2026 in its current form, with a successor flagged but not published.
Who qualifies
You need three things, all together:
- Ownership. You own the property (mortgaged is fine) or you’re a private tenant where the landlord applies.
- A qualifying benefit. Universal Credit, Pension Credit, Income Support, income-related ESA, income-based JSA, Child Tax Credit or Housing Benefit. ECO4 Flex routes (via local authorities) can sometimes open a path for households on lower incomes without a listed benefit.
- An inefficient home. EPC rating D, E, F or G. Homes already at A, B or C rarely qualify because the scheme targets the leakiest stock.
Solar isn’t always the first measure — insulation, draught-proofing and heating upgrades come first in most cases. But solar PV and storage are in scope and do get funded when the whole-house assessment supports it.
How to apply
Two routes. The first: contact a TrustMark-registered, PAS 2030-certified installer who runs ECO4 funding (we do), who’ll submit the application to a funder supplier on your behalf. The second: your local authority’s ECO4 Flex scheme — check your council website for “ECO4 Flex” or “LA Flex”. Going direct to an energy supplier is possible but harder — they route you back to an installer anyway.
What to have ready: your EPC certificate (or address so the installer can pull it), recent benefit award letter, and a recent bill.
Realistic wait times
Three to nine months is normal from first enquiry to install day. The scheme is busy and surveyor capacity is tight. The deadline for the current ECO4 rules is 31 March 2026 — after that, a successor scheme is expected, but historical gaps between ECO phases have run 3–9 months. If you qualify now, apply now.
Honest take: most homeowners reading this page won’t qualify for ECO4. If you’re not on benefits and your home is rated EPC C or better, don’t waste time filling in forms. The 0% VAT saving and 0% finance options below are your actual route.
Great British Insulation Scheme (GBIS)
GBIS sits alongside ECO4 and runs to 31 March 2026. It’s mainly aimed at insulation measures (cavity wall, loft, room-in-roof) for homes in EPC Bands D–G in Council Tax Bands A–D (or A–E in Scotland). Solar PV isn’t GBIS’s headline measure, but GBIS can stack with ECO4 so your home ends up insulated first, then solar goes on a warm, efficient fabric.
Apply the same way you’d apply for ECO4 — through an accredited installer or your local authority. Full details at gov.uk/apply-great-british-insulation-scheme.
Home Upgrade Grant (HUG2)
HUG2 targets England’s off-gas-grid, low-income households — roughly half a million homes using oil, LPG, solid fuel or electric heating. It funds up to £10,000 of energy-efficiency measures per home, and solar PV is in scope alongside insulation and heat pumps.
The funding runs via local authorities rather than centrally. That’s the awkward bit — every council operates it differently, triage is strict, and not every council has signed up. Check your council’s website first, then the gov.uk HUG2 page for the list of delivery partners. Funding runs through to spring 2026.
Realistic expectation: HUG2 is oversubscribed and heavily focused on insulation. Solar tends to get paired with a heating upgrade rather than funded on its own. Worth applying if you’re off-gas and income-eligible, but don’t bank on it.
Scotland: Home Energy Scotland loan and cashback
Scotland has the most generous solar offer in the UK right now. If you own your home in Scotland, you can apply for an interest-free loan of up to £6,000 for a solar PV system, plus cashback of up to £1,250. Batteries get a separate £5,000 loan + £1,250 cashback. Administered by the Scottish Government via Home Energy Scotland.
It’s not means-tested for the baseline loan — most Scottish homeowners qualify — though cashback rates are more generous for lower-income households. The loan is repaid over 10 years, interest-free. Combine it with 0% VAT and a Scottish install becomes meaningfully cheaper than the same job south of the border.
Apply via Home Energy Scotland before you sign a quote. The installer must be MCS-certified. The loan is paid to the installer direct after install.
One caveat worth flagging: the loan scheme has been paused and reopened a few times over the last two years as budgets were refreshed. Check the Home Energy Scotland site for live application windows before you commit to a quote — you can still install during a pause, but you’d be paying upfront.
Wales: Nest scheme
Nest is the Welsh Government’s energy-efficiency scheme, delivered by Warmworks Cymru. It’s means-tested: you typically need to own or privately rent your home, receive a means-tested benefit, and live in a property with an EPC rating of E, F or G (or be vulnerable to cold-home health impacts).
Eligible households get a free package of measures — typically insulation and a new heating system first, with solar PV, solar thermal or a battery added where it makes sense for the property. Apply via gov.wales or by calling the Nest freephone number.
Like ECO4 and HUG2, solar isn’t automatic — the whole-house assessment drives the measure list. Don’t sign a Welsh installer quote until you’ve checked Nest first if you think you qualify.
Northern Ireland schemes
Two main schemes cover Northern Ireland. Affordable Warmth (delivered by the Northern Ireland Housing Executive and local councils) provides up to around £7,500 of energy-efficiency measures for means-tested households with a low income and an energy-inefficient property. The NI Sustainable Energy Programme (NISEP) is delivered by energy suppliers under Utility Regulator oversight and funds a mix of measures for both priority (low-income) and non-priority households.
Solar tends to sit behind insulation in the priority order. Worth applying if you qualify, but treat it as a “maybe” rather than a “when”. The 0% VAT saving applies in Northern Ireland the same as the rest of the UK.
For higher-income NI homeowners, 0% finance through high-street lenders works the same way as in the rest of the UK. NI has fewer MCS-certified installers per head than England, so book a survey early — diaries fill up fast during spring and summer.
0% finance options (not a grant, but worth knowing)
If you don’t qualify for a grant, the next-best lever is 0% finance. High-street banks and retailers routinely offer 0% interest for 12–24 months on home energy improvements, either through dedicated green-finance products or through standard personal loans with introductory 0% windows.
Typical offers in early 2026: Tesco Bank, M&S Bank, Sainsbury’s Bank and John Lewis Finance all publish 0% personal-loan rates on shorter terms. Several installers (including us) can arrange finance direct too. The maths is simple: if your solar system saves you £1,200 a year and your monthly repayment over 2 years is £450, you’re cash-flow positive from year 3.
Two cautions. First: read the small print on early repayment (most 0% deals are fine). Second: don’t over-borrow on the battery — battery payback is already longer than panel payback, and stretching a loan across both means you don’t see the benefit until year 8 or 9.
Council-level schemes worth checking
Some councils run their own top-ups, group-buy schemes or ECO4-Flex pots. Worth checking because they’re lightly advertised and eligibility is often looser than ECO4 itself. Examples from 2025–2026:
- Warm Homes Oldham — grants and interest-free loans for energy improvements.
- Warmer Homes West Sussex — HUG2-funded measures for off-gas-grid households.
- Solar Together group buys — run in partnership with councils including Hertfordshire, Essex, Suffolk, Surrey and several London boroughs. Group-rate pricing rather than a grant, but worth the price benchmark.
- Bristol City Leap — retrofit and solar for specific Bristol wards via a partnership between Bristol City Council and Ameresco.
- Greater Manchester Green Deal / Retrofit — various pots depending on your local authority inside Greater Manchester.
The fast way to check: Google “[your council name] solar grant” and “[your council name] ECO4 Flex”. If the council page looks vague or stale, ring the energy advice line — most councils have one.
One pattern worth knowing: Solar Together isn’t a grant, it’s a bulk-buying auction. Your council partners with iChoosr, householders register interest, an installer wins the auction and everyone who registered gets the same price. We’ve seen those prices land 5–15% below typical retail — good, but not transformational. Worth using as a price benchmark when comparing quotes.
Schemes to avoid: “free solar” scams
If someone rings you up offering free solar panels, put the phone down. Seriously. The honest grant route goes through a PAS 2030-certified installer or a local authority portal — not through a cold call.
The three red flags we see again and again:
- “Free” in exchange for a 20–25 year roof lease. You get the bill saving. They keep the SEG income and own the panels on your roof. Selling the house gets messy — many buyers refuse to take on the lease.
- Pressure sales. “This price is only valid today.” Any legitimate quote is valid for 30–90 days. Anyone rushing you is protecting a high margin.
- No MCS number, no paperwork. MCS certification is the industry baseline. If an installer won’t give you their MCS number and TrustMark registration, don’t hire them. Cross-check at mcscertified.com.
Trading Standards has been issuing guidance on this since 2022. The MCS-first rule is the simplest defence: no MCS, no install. We go further and recommend you ask for a TrustMark Consumer Code member — that gets you an insurance-backed guarantee on top of the workmanship warranty.
If a cold caller name-drops “the government scheme” or “your area’s new grant”, ask which specific scheme (ECO4, HUG2, GBIS, Nest, Home Energy Scotland) and which Ofgem-registered funder. Real grant admins never cold call — you apply to them. If the person on the phone can’t name the scheme, it’s a lead-gen call dressed up as a grant offer. Report persistent nuisance calls to your telecoms provider and to the ICO.
Frequently asked questions
Do I need to pay VAT on solar installation in the UK?
No. Under HMRC VAT Notice 708/6, residential solar PV installs and standalone battery retrofits carry 0% VAT until 31 March 2027. That's a saving of roughly £1,000–£4,000 on a typical domestic install. Your quote should show 0% VAT — if an installer is charging 20%, walk away.
Can I claim ECO4 if I'm a homeowner?
Only if you receive a qualifying benefit (Universal Credit, Pension Credit, Income Support, income-related ESA, income-based JSA, Child Tax Credit or Housing Benefit) and your home is rated EPC D, E, F or G. Homeowners on higher incomes with efficient homes (EPC A, B or C) almost never qualify. ECO4 is the big one people ask about — and the one most people don't get.
Will my council pay for my solar panels?
Some councils run small schemes — Warm Homes Oldham, Warmer Homes West Sussex, Solar Together group buys — but direct council grants for owner-occupier solar are rare. Most council activity goes through ECO4 Flex or HUG2 funding the council has been allocated. Search '[your council name] solar grant' to see what's live.
Do solar grants cover batteries too?
Sometimes. ECO4 can fund a battery alongside solar where it's part of a whole-house measure, but only when paired with solar PV or where the surveyor's report supports it. Standalone retrofit batteries are almost never grant-funded. Good news: retrofit batteries are 0% VAT until March 2027 under HMRC rules, so they're cheaper than they were.
How long does ECO4 take from application to install?
Three to nine months is typical. Some ECO4 Flex routes move faster if the local authority is actively signposting households. Most of the wait is desktop survey and measure-approval — not install day, which is the usual 1–2 days once booked.
Can I combine grants with 0% finance?
Yes, and it's a sensible approach when a grant covers part of the cost but not all. Most high-street lenders (Tesco Bank, M&S Bank, Sainsbury's Bank, John Lewis Finance) run 0% finance deals for 12–24 months on energy-efficiency improvements. Keep records of anything a grant paid for so you're not double-claiming.
Do I need to use a specific installer for grants?
For ECO4 the installer must be TrustMark-registered and PAS 2030-certified (we are). For Home Energy Scotland loans the installer must be MCS-certified. For Nest in Wales, Warmworks or British Gas run the scheme — they subcontract MCS installers. For HUG2, the council contracts approved installers via their own framework.
What happens after ECO4 ends in March 2026?
A successor scheme is expected — Ofgem and DESNZ have flagged intent, but scope and start date aren't published yet. If you're eligible now, apply now rather than waiting. Gaps between schemes are common and historically run 3–9 months.
Is the 'free solar' I keep being cold-called about real?
Not in the way they pitch it. Most 'free solar' offers are roof-lease deals where the company keeps your SEG payments and owns the panels on your roof for 20–25 years. Trading Standards has warned about this model for years. If something sounds free and you haven't gone looking for it, check MCS first and run a mile from pressure sales.
Want a straight answer on what you qualify for?
We’re MCS-certified and TrustMark-registered. If you qualify for ECO4 we’ll run the funder application for you; if you don’t, we’ll price the job properly with 0% VAT baked in and point you at finance options that actually work. No cold calls, no pressure sales. See how we install at our solar installation page, or read more on Smart Export Guarantee earnings and contact us directly.
