The honest truth first: there is no free solar for most people
Let's start with the thing most guides won't tell you straight: for most UK households, there is no government grant that pays for solar panels.
There is no nationwide "free solar" scheme open to every homeowner. The support that exists falls into three camps:
- 0% VAT — removes VAT from the install for everyone, but does not pay for the panels themselves.
- Means-tested schemes (ECO4, Warm Homes Local Grant) — can fully fund solar, but only for low-income households in inefficient homes.
- Income after install (SEG) — pays you for exported electricity, but is not upfront funding.
If you've seen an advert promising "free solar panels for all" or a "government solar programme", treat it with suspicion — the detail is almost always either a rent-a-roof deal (someone else owns the panels and keeps the income) or a lead-generation site harvesting your contact details.
The realistic position for most people: you pay for solar yourself, benefit from 0% VAT (a four-figure saving), and earn SEG payments on exported energy over time. Whether that stacks up depends on your roof, your usage and whether a battery makes sense — which is exactly what our savings calculator works out for your own situation.
All UK schemes at a glance (2026)
| Scheme | Who it's for | What you get | Runs until |
|---|---|---|---|
| 0% VAT | Everyone (residential) | VAT removed from solar + battery install (~£1,900 on 4.5 kW) | 31 March 2027 |
| ECO4 | Low-income + poor EPC (D–G) | Up to 100% of solar, alongside insulation/heating | 31 Dec 2026 |
| ECO4 Flex / LA Flex | Low-income not on benefits | Similar to ECO4 via council referral | 31 Dec 2026 |
| Warm Homes: Local Grant | England, income ≤£36,000, EPC D–G | Up to £30,000 per household | To 2028 |
| Warm Homes Nest (Wales) | Wales, low-income | Free energy-efficiency improvements | Ongoing |
| Home Energy Scotland | Scotland homeowners | Grants/loans for clean heating (solar PV limited) | Ongoing |
| SEG | Anyone with MCS solar | 3p–25p/kWh for exported electricity | No end date |
0% VAT — the discount everyone gets
Since April 2022, the government has charged 0% VAT on qualifying energy-saving materials and their installation — down from the standard 20% and the previous 5% reduced rate. This is the one measure that benefits every homeowner, with no application and no income test.
What qualifies:
- Solar PV panels
- Battery storage systems (including standalone batteries)
- Inverters (string, hybrid and micro)
- Mounting hardware, rails, labour and commissioning
How much it saves: on a typical 4.5 kW system, removing 20% VAT saves roughly £1,900. You won't see it as a line item — it's already baked into the price your installer quotes. Installers apply the relief automatically; you don't need to claim it.
The 0% rate is currently scheduled to end on 31 March 2027, after which a 5% reduced rate is expected to return. If you're paying for solar yourself, having the work done before that date keeps the full saving. See what your system would cost.
ECO4 — the one route that can fully fund solar
ECO4 (the Energy Company Obligation) is the UK's main scheme that can pay for solar in full. But it is not a cash grant paid to you — it's an obligation on large energy suppliers to fund energy-efficiency upgrades for eligible households, delivered by approved installers.
The crucial catch: ECO4 is a whole-home retrofit scheme. It leads with insulation and heating, because those usually do more for a cold, expensive home. Solar PV can be included where a property assessment supports it, but ECO4 rarely funds standalone solar — panels are usually installed alongside insulation or a heating upgrade.
Who qualifies
- Receiving a means-tested benefit: Universal Credit, Pension Credit, Housing Benefit, income-based JSA/ESA or Income Support
- Some Child Tax Credit recipients
- Living in a property with an EPC rating of D, E, F or G
- Homeowners or private tenants (with landlord permission)
ECO4 ends on 31 December 2026 and there will be no ECO5 — the Warm Homes Plan takes over from January 2027. If you think you qualify, apply in 2026. The exact terms of the replacement are not yet settled, and there's no guarantee solar will be covered on the same terms.
ECO4 Flex / LA Flex
Even if you don't receive qualifying benefits, you may still be eligible through ECO4 Flex (also called LA Flex, for Local Authority Flexible Eligibility). This lets councils refer households that don't meet the standard benefit criteria but are still vulnerable to fuel poverty or high energy costs.
Typical LA Flex criteria include a total household income of around £31,000 or below, or a household member whose health is made worse by a cold home. Contact your local council to ask whether they participate.
Warm Homes: Local Grant (England)
The Warm Homes: Local Grant replaced the Home Upgrade Grant (HUG2) and is now the main route to funded solar in England. It runs from April 2025, is backed by £500 million, and is delivered by local councils.
Unlike ECO4, solar PV is explicitly an eligible measure — and a battery is funded too when installed alongside the panels.
Who qualifies
- Home in England, privately owned or privately rented
- Household income of £36,000 or less, or someone in the home receives a means-tested benefit
- Property EPC rating of D, E, F or G
How much
Up to £30,000 per household for energy-efficiency improvements (which can include solar PV and battery) and low-carbon heating. A solar-plus-battery package inside the scheme is typically worth £9,000 to £12,000.
Some councils prioritise insulation and heat pumps over solar, and a few paused their portals under demand in late 2025. Whether solar is on the menu depends on the authority running it where you live. Check your council's Warm Homes page or the GOV.UK Warm Homes Plan page first.
Warm Homes Plan — what's coming in 2027
The government's Warm Homes Plan represents £15 billion of public investment to upgrade up to 5 million homes by 2030. It's still rolling out, but the parts most relevant to solar are:
- Low- and zero-interest loans for solar and batteries, expected through a Consumer Loan Scheme with £2 billion of total support (£1.7 billion of lending plus up to £300 million of government funding), rolling out in phases from 2027.
- Fully funded upgrades for low-income households, covering insulation, heating and solar at no cost.
- Future Homes Standard (expected early 2027), which will require solar panels as standard on all new-build homes.
Details are still being finalised, so keep an eye on government announcements for dates and application windows.
SEG — not a grant, but income after install
The Smart Export Guarantee (SEG) is not a grant — it's a requirement on larger electricity suppliers to pay you for surplus solar electricity you export to the grid. It pays 3p to 25p per kWh, has no end date, and is available to anyone with an MCS-certified installation.
Think of SEG as the "second layer" of your return: your main saving is the electricity you stop buying, and SEG is the bonus on what you export. For a full breakdown of rates and how to maximise them, see our SEG explained guide.
Scotland, Wales & Northern Ireland
Devolved nations run their own programmes, separate from ECO4 and Warm Homes.
Scotland
- Home Energy Scotland Grant and Loan — grants and interest-free loans for clean heating and energy efficiency. Solar PV is generally not covered as a standalone grant, though some renewable and hybrid systems may qualify for loan support.
- Warmer Homes Scotland — free energy-efficiency improvements for eligible homeowners and tenants in poor-EPC homes.
Wales
- Warm Homes Nest Scheme (Nest) — free advice and, for eligible households, fully funded energy-efficiency improvements including solar.
- Green Homes Wales — interest-free finance for eligible improvements, potentially including solar and battery storage.
Northern Ireland
Northern Ireland has separate arrangements and historically more limited solar grant support. Check with nidirect or your local council for the latest, as schemes change frequently.
Scams to avoid
The gap between "free solar for all" (a myth) and what actually exists creates room for scams. Watch for these:
- "Free solar panels" adverts — outside ECO4/Warm Homes, this usually means a rent-a-roof arrangement where a company owns the panels and keeps the SEG income, or an outright scam.
- "Great British Energy" grant sites — the government's Great British Energy (gbe.gov.uk) does not fund solar on private homes; it funds panels on public buildings. Lookalike sites (like greatbritishenergy.com) harvest your details with the promise of a grant that doesn't exist.
- Cold callers offering "government-backed" free panels — legitimate schemes go through energy suppliers, approved installers or your local council, never unsolicited calls.
- Non-MCS installs — a cheap install outside the MCS framework locks you out of SEG permanently. Always use an MCS-certified installer.
How to apply
Your route depends on your situation:
- Everyone: just get quotes — 0% VAT is applied automatically by installers.
- On benefits / low income: contact a participating energy supplier, an approved ECO4 installer, or your local council (for LA Flex and Warm Homes Local Grant).
- Wales / Scotland: contact Nest (Wales) or Home Energy Scotland (Scotland).
- After install: register for SEG with an MCS certificate, a smart meter and your export MPAN.
Whatever your situation, the first step is the same: work out whether solar actually pays off for your home before chasing any grant.
Work out your solar savings first
Grants only matter if solar makes sense for your home. Use our free calculator to see your savings, payback and 25-year profit in seconds.
Calculate my savings →FAQ
Is there a grant to replace an existing solar system?
No. UK schemes fund new installations and home energy-efficiency improvements, not replacements for working systems.
Do I need to be on benefits to get help?
For fully-funded schemes (ECO4, Warm Homes Local Grant), yes — eligibility is broadly tied to means-tested benefits or low household income. The 0% VAT and SEG are open to everyone regardless of income.
Can I get help as a tenant?
Private tenants can qualify for ECO4 and Warm Homes schemes with their landlord's permission. Social-housing residents may be eligible through their housing provider's own retrofit programmes.
Is the 0% VAT applied automatically?
Yes. Your installer applies the relief to the quote — you don't file anything with HMRC. Just confirm your installer is charging 0% VAT on the qualifying items.
Sources: GOV.UK Warm Homes Plan and ECO4 guidance, Ofgem, HMRC (energy-saving materials VAT relief), Energy Saving Trust, Home Energy Scotland, Welsh Government Warm Homes Nest. Figures verified August 2026. Scheme dates and amounts are subject to change — confirm with the official scheme before committing.
Disclaimer: this guide is for general information only and is not financial or legal advice. Eligibility for grants depends on your individual circumstances, location and property. Always confirm details with the official scheme provider.