Who Qualifies for Free or Funded Solar Panels Under ECO4?
Free or funded solar panels may be available through ECO4, but only in specific circumstances. ECO4 is not a universal solar grant, and meeting the income or benefits rules does not automatically mean solar PV will be offered.
Your household normally needs to qualify through benefits or ECO4 Flex, your property must have a low Energy Performance Certificate rating, and a retrofit assessment must show that solar belongs in the improvement plan. Crucially, ECO4 solar is generally restricted to homes using, or receiving, an approved electric heating system.
This guide explains the current rules for homeowners, private tenants, landlords and social housing residents across Great Britain.
Get a free eligibility check: Ask Simple Green Energy to review your benefits, income, EPC rating, heating system and roof suitability.
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Quick answer
You may qualify for free or funded solar panels under ECO4 if you live in Great Britain, receive a qualifying benefit or are accepted through ECO4 Flex, and occupy an inefficient home. Owner-occupied properties are generally eligible from EPC bands D to G; privately rented homes normally need to be rated E to G and require landlord consent. Solar is not automatic. Under Ofgem’s rules, it must reduce heating costs and is normally linked to a hydronic heat pump, high-heat-retention storage heaters or another qualifying electric heating system. Insulation, roof suitability, available supplier funding and a full retrofit assessment also apply. Eligibility means you can be considered, not that installation is guaranteed.
ECO4 eligibility at a glance
| Route | Who may qualify | Property requirement | Solar position |
|---|---|---|---|
| Qualifying benefits | A resident receiving an approved benefit | Owner: usually EPC D–G; private renter: E–G | Possible only if heating and technical rules are met |
| Flex Route 1 | Combined gross household income below £31,000 | Owner: D–G; private renter: E–G | Council referral does not guarantee PV |
| Flex Route 2 | Household meeting at least two approved low-income or vulnerability proxies | Normally EPC E–G | Useful where income alone does not show need |
| Flex Route 3 | Severe or long-term illness made worse by a cold home | Owner: D–G; private renter: E–G | Medical evidence and council declaration needed |
| Social housing | Residents in qualifying inefficient social homes | Depends on EPC band and permitted package | Only where scheme and technical conditions allow |
This summary reflects the current Ofgem household, tenure and ECO4 Flex rules.
What is ECO4?
The Energy Company Obligation is a government energy-efficiency scheme delivered by obligated energy suppliers in England, Scotland and Wales. It aims to reduce fuel poverty and carbon emissions by improving inefficient homes.
ECO4 runs until 31 December 2026 following a nine-month extension. The extension did not increase the overall obligation, so funding can vary by supplier and area.
ECO4 follows a whole-house approach. A retrofit assessment considers the building fabric, heating system and expected improvement in the property’s energy rating. Solar may be one measure within that package rather than a stand-alone giveaway.
Who qualifies through benefits?
A household may qualify when a resident receives:
- Universal Credit
- Pension Credit Guarantee Credit or Savings Credit
- Income Support
- Income-based Jobseeker’s Allowance
- Income-related Employment and Support Allowance
- Housing Benefit
- Child Benefit, subject to income limits
These benefits form the current ECO4 Help to Heat Group list.
Child Benefit is not an automatic passport. Ofgem’s gross annual income caps vary according to household composition, from £19,900 for a single claimant with one child to £42,000 for a couple with four or more children.
Working Tax Credit and Child Tax Credit ceased on 5 April 2025, and their final 12-month ECO4 evidence window ended on 4 April 2026.
Can you qualify without benefits?
Yes. A participating council or devolved administration can refer private households through ECO4 Flex:
- Household income: Combined gross income of all permanent adult residents is below £31,000.
- Proxy targeting: At least two approved indicators apply, such as low-income Council Tax reduction, free school meals, energy debt, deprivation or vulnerability to cold.
- Medical referral: Someone has a severe or long-term cardiovascular or respiratory condition, limited mobility or immunosuppression that is adversely affected by a cold home.
- Bespoke targeting: An approved local method identifies low-income and vulnerable households.
The council must participate and issue a declaration. Delivery arrangements differ locally, and referrals may pause when supplier funding is unavailable. Ofgem describes ECO4 Flex as an optional referral mechanism, so not every council will operate it in the same way.
Property and tenure requirements
Owner-occupied homes normally need a starting EPC of D, E, F or G. Privately rented homes generally need an EPC of E, F or G. It is usually the tenant’s eligibility that matters, and the landlord must consent before work begins.
Social housing has separate rules. E-to-G-rated homes may receive specified insulation or heating measures, while D-rated homes face tighter restrictions.
An EPC is only a starting point. A retrofit assessment is still required, and insulation may need to be completed first. Depending on the project, loft, roof, wall or floor insulation must already meet the required standard or form part of the package.
When can ECO4 fund solar panels?
Ofgem treats solar PV as a heating measure under ECO4, so it must contribute to reducing heating costs. It is eligible where the home’s existing or proposed heating includes:
- A hydronic heat pump
- High-heat-retention electric storage heaters
- A qualifying electric heating system with the required SAP responsiveness
Some generated electricity must be used by equipment providing heat in the property. ECO4 solar is therefore generally unsuitable where the main heating is, or will become, gas, oil, LPG or another non-electric system.
Solar is also subject to insulation preconditions, PAS 2035 and MCS standards. ECO-funded generation is capped at 10kWp per home, including existing panels.
Battery storage may be installed during a retrofit, but it receives no ECO score and is not automatically funded.
Who is unlikely to receive funded solar?
ECO4-funded solar is unlikely where:
- The home is EPC A, B or C
- The applicant wants solar only, without a whole-home assessment
- The main heating is non-electric
- The roof is structurally unsuitable or badly shaded
- Required insulation cannot be completed
- The property is in Northern Ireland
- A landlord refuses permission
- No supplier funding is available
Passing an online form is only the first step. Ofgem makes clear that eligibility does not require a supplier or installer to offer funding. Suppliers decide which measures they will support and may request a customer contribution.
ECO4 solar panel cost and funding guide
| Outcome | Likely household payment | When it applies |
|---|---|---|
| Fully funded package | £0 | Supplier funding covers the approved measures |
| Part-funded package | Customer contribution | Costs or extras exceed the available contribution |
| Solar declined | No ECO solar support | Heating, EPC, insulation, roof or scoring rules fail |
| Private installation | Market price; around £7,600 for a typical 4.5kWp system | The household buys outside ECO4 |
ECO4 is an obligation, not a fixed-value voucher. Support depends on the property, expected savings and available funding. Energy Saving Trust estimates that a typical privately purchased 4.5kWp domestic system costs around £7,600, although roof access, system size and remedial work can change the price.
Ask for a written breakdown of funded work, customer payments, warranties and exclusions. A survey is essential for an accurate quotation.
How to check eligibility and apply
- Confirm your location. ECO4 covers England, Scotland and Wales.
- Find your EPC. Note its rating and recommended improvements.
- Check household eligibility. Review benefits, total adult income and health vulnerabilities.
- Identify the heating system. Record whether it is electric, gas, oil or LPG.
- Contact the right route. Approach the council for ECO4 Flex, an obligated supplier or a reputable delivery partner. You do not have to be an existing customer of the obligated supplier.
- Provide evidence. This may include benefit letters, income records, proof of occupancy, landlord consent or medical evidence.
- Complete the surveys. The retrofit and technical surveys should assess insulation, roof condition, shading and electrical capacity.
- Read the offer. Confirm funding, any contribution, equipment, expected generation, warranties, certification and complaints arrangements.
Book a free home survey: Simple Green Energy can assess whether ECO4, ECO4 Flex or another current route is realistic for your home.
Why the installer matters
Funding does not remove the need for good design. Poor work can reduce output, damage the roof or leave you with unclear warranties.
Solar PV should be installed by an MCS-accredited business, comply with PAS 2035:2023 and sit within the required TrustMark framework or equivalent protection. Most ECO4 installers must be TrustMark registered, while renewable and microgeneration installers must hold the relevant MCS certification.
Verify the company’s TrustMark and MCS details, request a written contract, confirm roof and workmanship guarantees, and retain the handover pack. The installer should explain monitoring, Distribution Network Operator registration, expected output and aftercare.
Frequently asked questions (FAQs)
Clear answers about UK solar funding, ECO4 availability in 2026, qualifying benefits, ECO4 Flex, pensioners, tenants, landlords, social housing and gas-heated homes. Speak to Simple Green Energy .
Could your household qualify for solar support?
Speak with Simple Green Energy about your benefits, income, vulnerability, EPC rating, heating system, property tenure and whether solar PV may form part of an eligible home-upgrade project.
Check my solar-grant eligibilityConclusion:
The strongest candidates are low-income or vulnerable residents in inefficient homes using, or receiving, qualifying electric heating. Benefits, income and EPC status open the door; the retrofit assessment, insulation, roof and supplier budget determine whether solar is installed.
For a reliable decision, combine an eligibility check with a technical survey rather than relying on a “free solar” advert.
Speak with Simple Green Energy for a clear evidence checklist and no-obligation recommendation.
