How-To Guide · Updated April 2026

How to Get a Free Solar Panel Grant in 2026 (UK)

Yes, free solar panels are real in 2026 — but only for eligible households. The ECO4 scheme and the new Warm Homes Plan cover the full cost of solar panels and a battery for qualifying UK homeowners. Here's exactly how to check if you qualify and apply.

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By the BestBuilders Editorial Team
Researched, written & fact-checked by our editorial team. Reviewed . How we research & fact-check
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Quick Answer

Can I really get free solar panels in 2026?

Yes — if you qualify. Free solar panel grants in 2026 come from two main government-backed schemes:

  • ECO4 — fully funded solar for low-income households with an EPC rating of D, E, F or G.
  • Warm Homes Plan — up to 100% funding for solar + battery for homes below a certain income threshold or receiving qualifying benefits.
  • Local authority top-ups (HUG 2/HUG 3) — region-specific grants for additional energy measures.

Homeowners who don't qualify for free solar can still benefit from 0% VAT on installations (saving £800–£1,600) and the Smart Export Guarantee for selling excess power to the grid.

Expert Note

Why three in five eligible households never claim their grant

ECO4 is the largest home-insulation grant scheme the UK has ever run — and according to Ofgem's most recent scheme-performance report, roughly 60% of eligible households still haven't claimed it. Not because the scheme is stingy or the paperwork is hard. Because most eligible households don't know they qualify.

The gap is almost entirely with the 'LA Flex' pathway — the alternative route that lets local authorities refer households who aren't on a qualifying benefit but still meet vulnerability or income criteria. Most council websites bury it under 'Energy efficiency' or 'Cost of living support', and there's no central signposting. Yet it's the pathway that unlocks ECO4 for working households on modest incomes, pensioners not claiming Pension Credit, and anyone in a household with a long-term health condition affected by cold.

Our advice if you're unsure: don't rely on an installer's eligibility check alone — many ECO4 installers only look for the headline qualifying benefits and turn away anyone who doesn't tick that box. Instead, search '[your council name] ECO4 LA Flex' and you'll find the council's specific criteria document. Most councils publish a simple online form; decision is typically 10–15 working days. If you're rejected by one installer, get a second and third opinion — we've seen many households funded on the third attempt who were told "not eligible" on the first. The £8,000–£14,000 of insulation that ECO4 can deliver is genuinely free for qualifying homes, with no catch and no deferred cost. The only thing that stops you claiming is not knowing the scheme is there.

Written by the BestBuilders Editorial Team. Based on platform quote data, industry research and primary UK source material. Reviewed 20 April 2026. Questions: info@bestbuilders.co.uk.

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Grant Schemes

Every UK Solar Grant Available in 2026

Four schemes are currently open to UK homeowners. Eligibility overlaps, so you can often combine benefits.

Scheme 1

ECO4 (Energy Company Obligation)

Funding: Up to 100% of install cost (solar + battery).
Eligibility: EPC rating D–G, plus qualifying benefits (Universal Credit, Pension Credit, Income Support, Child Tax Credit).
Valid until: 31 March 2027.
How to apply: Through an MCS-certified installer registered with Ofgem.

Scheme 2

Warm Homes Plan

Funding: Up to 100% of install cost for eligible low-income households.
Eligibility: Household income below £36,000 OR in receipt of means-tested benefits, plus low EPC rating.
Valid: Rolling programme from 2025.
How to apply: Through your local authority or certified installer.

Scheme 3

Home Upgrade Grant (HUG 3)

Funding: Up to £15,000 per home for off-gas properties.
Eligibility: Homes not connected to the gas grid, EPC D or below, household income under £36,000.
Valid: Open — administered regionally by local authorities.
How to apply: Via your local council's energy team.

Scheme 4

0% VAT + Smart Export Guarantee

Funding: 0% VAT on all solar installs (saves £800–£1,600). SEG pays 5p–15p/kWh for exported electricity.
Eligibility: All UK homeowners — no income test.
Valid: 0% VAT until March 2027.
How to apply: Automatic — handled by your installer and energy supplier.

Step-by-Step

How to Apply for a Free Solar Panel Grant in 2026

The application process takes around 6–10 weeks from eligibility check to installation.

1

Check Eligibility

Confirm your EPC rating (or get a free one), your household income, and any benefits received. Most schemes need EPC D–G.

2

Get an Approved Installer

Apply only through an MCS-certified, Ofgem-registered installer. We'll match you to 3 in your area within 24 hours.

3

Home Survey

Free survey confirms roof suitability, grant amount and panel sizing. Takes 30–60 minutes on-site.

4

Installation

Installers handle grant paperwork end-to-end. Typical install: 1–2 days. You pay nothing if fully grant-funded.

Eligibility Checklist

Do You Qualify for Free Solar Panels?

You're likely eligible for a free solar panel grant in 2026 if you can tick most of these boxes:

  • ✅ You own your home (or have written landlord permission)
  • ✅ Your home has an EPC rating of D, E, F or G (get a free check on gov.uk)
  • ✅ You receive at least one of: Universal Credit, Pension Credit, Income Support, Child Tax Credit, Working Tax Credit, ESA, Housing Benefit, or JSA
  • ✅ OR your household income is under £36,000
  • ✅ Your roof is south, south-east or south-west facing (some east/west also qualify)
  • ✅ Your roof has no major shading from trees or buildings
  • ✅ Your roof is in good structural condition (minor repairs sometimes covered)

Not eligible for free solar? You can still save ~£1,600 with 0% VAT plus £150–£250/year from the Smart Export Guarantee. A typical 4kW system pays for itself in 7–9 years. Get a free quote to see your personalised savings.

100%
Funding available (if eligible)
£1,600
Saved via 0% VAT alone
6wk
Typical application time
25yr
Panel warranty
Be Aware

Avoid Solar Panel Grant Scams in 2026

The rise in genuine grant schemes has been matched by a rise in scam operators. Protect yourself by checking for these red flags before signing anything:

  • Cold calls or texts offering "free solar" — legitimate schemes do not cold-call.
  • Demands for upfront fees to "reserve" a grant — all genuine ECO4 and Warm Homes applications are free.
  • Pressure to sign same-day without a cooling-off period.
  • Installers without MCS certification — you cannot receive grants through non-MCS installers. Check mcscertified.com.
  • Vague grant promises not tied to a specific scheme name (ECO4, Warm Homes Plan, HUG).
  • No written quote or contract — always insist on itemised paperwork.

All installers in the BestBuilders network are independently vetted for MCS certification, insurance, and customer reviews. Get 3 free quotes and compare before you commit to anything.

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Frequently Asked Questions

Free Solar Panel Grant FAQs

Yes — eligible households can receive 100% grant funding through ECO4 or the Warm Homes Plan. Eligibility typically requires an EPC rating of D to G, plus either a qualifying means-tested benefit (Universal Credit, Pension Credit, etc.) or a household income below around £36,000. Applications are made through MCS-certified, Ofgem-registered installers who handle all the paperwork on your behalf.
Visit gov.uk and search for 'Find an energy certificate'. Enter your postcode to see your home's current EPC rating and date. If your EPC is more than 10 years old or you don't have one, you'll need a new assessment (around £60–£100). For ECO4 and Warm Homes applications, EPCs must typically be less than 10 years old.
Possibly. Under ECO4's Flex scheme, local authorities can refer households without qualifying benefits if they meet vulnerability criteria (low income, health conditions, elderly residents). The Warm Homes Plan also uses income thresholds, so households earning under £36,000 may qualify even without benefit claims. Contact your local council's energy team or apply through an MCS-certified installer who can check all eligible routes.
No — the Boiler Upgrade Scheme (BUS) is specifically for low-carbon heating systems: air source heat pumps, ground source heat pumps and biomass boilers. It pays £7,500 towards a heat pump. For solar panels specifically, you need ECO4, Warm Homes Plan or HUG3. Many households qualify for both schemes and can combine them for a fully electrified home with minimal out-of-pocket cost.
From first enquiry to completed installation, expect 6–10 weeks in 2026. The eligibility check and benefits verification take 1–2 weeks. A home survey is typically within 2 weeks. Grant approval takes a further 2–3 weeks. Installation itself takes 1–2 days. Peak demand in autumn can extend timelines to 12 weeks — apply early if you want panels generating before winter.
If you don't qualify for free solar, the cheapest route is: (1) 0% VAT — automatic, saves £800–£1,600 on a typical install; (2) Smart Export Guarantee — earns £100–£250/year from exporting surplus power; (3) Choose a 4kW system with battery for best ROI — typical cost £8,500–£11,500 in 2026, payback 7–9 years; (4) Get 3 free quotes to compare prices — our vetted installers typically quote 15–25% below standalone sales channels.
Every council in England, Wales and Scotland publishes their own LA Flex Statement of Intent on their website — this lists the specific vulnerability and income criteria they'll use to refer households onto ECO4. Search '[your council name] ECO4 Statement of Intent' in Google. The document will state the specific income threshold (typically £31,000–£36,000 household income), any health-related criteria, and the application process. If your council doesn't appear in search results, they may not participate — in which case ECO4 is only accessible via the benefits pathway in that area. Note that LA Flex criteria vary significantly between councils; a household that qualifies in Manchester may not in Surrey.
The Great British Insulation Scheme (GBIS) is a separate, narrower scheme that runs alongside ECO4. It's targeted at low-income households in EPC D–G properties, covers a single insulation measure only (usually cavity wall or loft), and doesn't require a PAS 2035 whole-house assessment. It's simpler and faster but less generous than ECO4. ECO4 is the right scheme if you need multiple measures or significant works (wall insulation, heating, ventilation); GBIS is simpler if you just need a cavity or loft top-up. Both schemes end in March 2027 and are expected to be replaced by the Warm Homes Plan with broader coverage.
Yes, private landlords can access ECO4 for tenant homes — but both the tenant must meet eligibility criteria (benefits or LA Flex referral) and the landlord must consent in writing to the work. ECO4 specifically excludes properties where the landlord could reasonably fund the upgrade themselves, and the scheme expects landlords to contribute 33% toward wall insulation on rental properties (the 'contribution cap'). Social housing has a separate scheme — the Social Housing Decarbonisation Fund — accessed by the housing provider, not the tenant. Houses in Multiple Occupation (HMOs) have more complex rules; check with your local environmental health team before applying.
ECO4 primarily funds heating and insulation measures — solar PV is only funded if a home's main fuel source is electricity (fully electric heating or on-peak resistive heating). Gas-heated homes don't qualify for solar under ECO4. Where eligible, grants cover a significant portion of install cost but usually not 100% — top-up contributions of £500–£2,500 are common. Always get a signed contribution figure in writing before work starts. For gas-heated homes, alternative schemes (Home Upgrade Grant Phase 2, regional council schemes) are more relevant for solar funding.
Pension Credit recipients and State Pension + low-income households often qualify for ECO4 Flex or the Warm Home Discount routes to solar funding. The simplest qualifying benefit is Guarantee Pension Credit — automatic eligibility. Higher-threshold Pension Credit may also qualify via your local authority's ECO4 Flex declaration. Pensioners in EPC D–G rated homes with electric-only heating get highest grant contributions. Be cautious of cold-call "free solar for pensioners" offers that require you to sign a lease agreement — this is not a grant and can make your home harder to sell.
Universal Credit is a qualifying benefit for ECO4 and ECO4 Flex grant routes, but solar funding specifically requires your home to be electric-heated (no mains gas or oil). UC claimants in rural off-grid properties have the highest chance of free or near-free solar installs. Check eligibility via the ECO4 partner network or via your energy supplier's obligation scheme — scheme portals will match you against several installers. Income thresholds vary: typical UC household income cap for ECO4 Flex routes sits at £31,000 per year.
Tenants can't apply for solar grants in their own right — the property owner (landlord) must apply. Under Private Rented Sector MEES rules coming into effect 2028, landlords will need EPC C minimum — driving interest in ECO4-funded upgrades including solar on electric-heated properties. Housing association and council tenants may have solar installed by their landlord under wholesale renewable-energy contracts. If you're renting privately, speak to your landlord about ECO4 eligibility — the funding only exists if the landlord formally applies.
Sources & Further Reading

Our sources for this guide

Every figure in this guide is cross-referenced against primary UK sources. We cite the specific documents and data providers we used so you can verify and dig deeper.

Links open in a new tab on external sites. We do not benefit commercially from any of these links; they are included to help readers verify claims and research further. If you spot a broken or outdated link, email info@bestbuilders.co.uk.

About This Guide

Editorial standards & how to reach us

This guide was researched, written and fact-checked by the BestBuilders Editorial Team. Every figure is cross-referenced against primary UK sources (gov.uk, Ofgem, RICS BCIS, FMB, MCS), verified quote data from vetted contractors on our platform, and independent industry reports. Guides are reviewed at least quarterly to reflect current market conditions and regulations.

Spotted something out of date? We care about accuracy. Email info@bestbuilders.co.uk or call 0800 852 7782 and we'll review it — most corrections go live within 48 hours.

BestBuilders Editorial Team
UK-based · Reviewed 20 April 2026
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Detailed Questions

Solar Panel Grants — Specific Scenarios

More detailed answers for specific sizes, materials and scenarios that readers ask us about regularly.

The ECO4 scheme ends on 31 March 2026, with transitional funding running until mid-2026 for approved projects. Solar PV is eligible under ECO4 only when bundled with insulation measures and for the lowest-income households (typically those on qualifying benefits with EPC D-G). From April 2026, the replacement Great British Insulation Scheme and local authority flexible eligibility funds take over, though solar PV coverage is reduced — contact your local authority's energy team to check.
Genuinely free solar panels are rare in 2026. Most "free solar" offers fall into one of three categories: (1) ECO4/successor grants for low-income households with qualifying benefits, (2) Rent-a-Roof schemes where the provider owns the panels and you get free daytime electricity (but they claim the SEG export payments), and (3) marketing traps — "free quote" that leads to a standard paid install. Legitimate free-to-you schemes require benefit qualification or very specific property types.
The Home Upgrade Grant (HUG) — extended through 2026 — provides up to £10,000 per household for energy-efficiency improvements including solar PV, for off-gas-grid homes with EPC D-G. Eligible households must have a gross income under £36,000. Check eligibility via your local authority; the scheme is not open-applied nationally and each council manages its own allocation. Typical solar install under HUG: £6,000-£9,000 fully covered.
Smart Export Guarantee (SEG) tariffs in 2026 range from 4p to 27p per exported kWh, with the best rates from Octopus Outgoing Fixed (15p flat) and EDF Export Variable (up to 27p peak). Most standard supplier SEG tariffs pay 4-7.5p/kWh. Your contract is separate from your import supplier — you can have Octopus Export while buying from British Gas. Compare SEG tariffs every 12-18 months to maximise earnings.
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