ECO4 Scheme 2026: Who Qualifies, What’s Covered and How to Apply

ECO4 Scheme Eligibility 2026: Everything You Need to Know

The ECO4 scheme is one of the most valuable energy efficiency programmes available to UK households, offering fully funded insulation and heating upgrades at no cost to eligible homeowners and private tenants. With the scheme now confirmed to run until 31 December 2026, time is running out to take advantage of this opportunity. Understanding your ECO4 scheme eligibility 2026 status could save you thousands of pounds on essential home improvements.

Delivered through major energy suppliers, ECO4 targets the least energy-efficient homes in the UK and aims to improve them by at least two EPC bands. The scheme covers a wide range of measures including home insulation, heat pump installations, boiler upgrades, and solar panel systems — all at no cost to qualifying households.

In this comprehensive guide, we explain who qualifies, what measures are available, and exactly how to apply. If you want to check your eligibility quickly, get a free quote from Green Reach Energy and our team will assess your situation within 24 hours.

What Is the ECO4 Scheme?

The Energy Company Obligation (ECO) is a government programme that requires large energy suppliers to fund energy efficiency improvements in qualifying homes. ECO4 is the fourth iteration of this programme, running from April 2022 to December 2026.

Unlike the Boiler Upgrade Scheme, which provides a fixed grant amount, ECO4 typically covers the entire cost of approved measures. Homeowners and tenants pay nothing — the energy supplier funds the work through their obligation to reduce carbon emissions and fuel poverty across their customer base.

ECO4 has two main qualification routes: the benefits pathway and the ECO4 Flex route through local authority referral. We will explain both in detail below.

ECO4 Scheme Eligibility 2026: The Benefits Pathway

The primary route to ECO4 qualification is through receiving a means-tested benefit. If you or anyone in your household receives any of the following benefits, you are automatically eligible:

In addition to receiving one of these benefits, your property must meet the following criteria:

• The property must have an EPC rating of D, E, F, or G
• You must be a homeowner or private tenant (social housing tenants should contact their housing association for separate improvement programmes)
• The property must be your primary residence

If you are unsure whether your property has a valid EPC, you can check the government’s online EPC register for free. If your home does not have one, an assessment can be arranged as part of the application process.

ECO4 Flex: The Alternative Route for Non-Benefits Households

Even if you do not receive any of the qualifying benefits, you may still be eligible through the ECO4 Flex route. This pathway allows local authorities to refer households that are vulnerable to fuel poverty based on broader criteria.

ECO4 Flex eligibility typically applies if you meet one or more of the following conditions:

• Household income below £31,000 per year (gross combined income of all adults)
• You live in an area identified as having high levels of fuel poverty (your local authority determines this based on the Low Income Low Energy Efficiency index)
• You have a health condition that is worsened by living in a cold home (e.g. respiratory illness, cardiovascular disease, mental health conditions)
• You have children under 5 or adults over 65 in the household
• You are pregnant
• You are disabled or receive disability-related benefits

The ECO4 Flex route requires a referral from your local authority. Some councils have online application forms, while others require you to contact them directly. Green Reach Energy can help you navigate this process — get a free assessment and we will identify whether you qualify and guide you through the application.

What Measures Does ECO4 Cover?

ECO4 covers a comprehensive range of energy efficiency measures. The specific measures offered to your property will depend on the surveyor’s assessment of what improvements are needed to achieve the required two-band EPC improvement.

Insulation Measures

Home insulation is the most commonly installed measure under ECO4, as it delivers the greatest improvement in EPC rating relative to cost. A combination of loft and cavity wall insulation can improve a property by one full EPC band on its own.

Heating Measures

• Air source heat pumps — replacing old gas or oil boilers with a modern heat pump
• Boiler upgrades — replacing broken or inefficient gas boilers with A-rated condensing models (where a heat pump is not practical)
• Heating controls — programmable thermostats, TRVs, and smart heating controls
• Storage heater upgrades — replacing old storage heaters with modern, high-retention models

Renewable Energy Measures

• Solar panels — solar PV systems to generate free electricity and reduce energy bills
• Solar battery storage — storing excess solar energy for use in the evening

The surveyor will recommend a package of measures designed to lift your property by at least two EPC bands. For example, a home currently rated F might receive loft insulation, cavity wall insulation, and a new boiler to reach a D rating.

The Two-Band EPC Improvement Requirement

ECO4 introduced a requirement that the installed measures must improve the property’s EPC rating by at least two bands. This is a higher bar than previous ECO schemes, which only required a single-band improvement.

Here is what that means in practice:

The two-band requirement means ECO4 tends to deliver more comprehensive improvements than previous schemes. Rather than a single measure, most households receive a package of two or three complementary upgrades that together transform the property’s energy performance.

ECO4 Scheme Eligibility 2026: Who Cannot Apply?

Certain groups are excluded from ECO4:

• Social housing tenants — if you rent from a housing association or local authority, contact them directly about their own improvement programmes. ECO4 is for homeowners and private tenants only.
• Properties rated A, B, or C — ECO4 targets the least efficient homes. If your property already has a good EPC rating, you are unlikely to qualify (though you may be eligible for the Boiler Upgrade Scheme instead).
• New build properties — homes built after 2012 are generally excluded as they should already meet minimum energy efficiency standards.
• Second homes and buy-to-let properties — the property must be the primary residence of the applicant or their tenant.

How to Apply for ECO4 in 2026

The application process depends on which eligibility route you are using.

Benefits Pathway Application

• Step 1: Gather proof of your qualifying benefit (a recent benefits letter or Universal Credit statement)
• Step 2: Contact an ECO4-approved installer or request a free assessment through Green Reach Energy
• Step 3: A surveyor visits your property to assess its current condition and EPC rating
• Step 4: The surveyor recommends a package of measures and the installer submits the application to the energy supplier
• Step 5: Once approved, the work is scheduled and carried out — typically within 4 to 8 weeks of approval
• Step 6: A post-installation inspection verifies the work meets quality standards and the new EPC is registered

ECO4 Flex Pathway Application

• Step 1: Contact your local authority to request an ECO4 Flex referral (or ask us to do this on your behalf)
• Step 2: Provide evidence of your household income and any vulnerability criteria (health conditions, age, etc.)
• Step 3: The local authority assesses your case and, if approved, issues a referral letter
• Step 4: Take the referral letter to an ECO4-approved installer who will arrange a property survey
• Step 5: The installer submits the application to the energy supplier with the LA referral
• Step 6: Once approved, measures are installed at no cost to you

The entire process from initial contact to completed installation typically takes 8 to 16 weeks, though this varies by area and the complexity of the measures required.

ECO4 vs Other Available Grants

ECO4 is not the only grant available. Understanding how it compares to other schemes helps you choose the right funding route.

ECO4 is generally the best option for benefits recipients, as it covers the full cost and includes the widest range of measures. The Boiler Upgrade Scheme is better suited to households above the income thresholds who specifically want a heat pump. The Warm Homes Local Grant sits between the two, offering substantial funding without the strict benefits requirement.

You can combine ECO4 with other grants for different measures. For example, you might receive insulation through ECO4 and then apply for a BUS grant to cover a heat pump installation. Get a free quote and our team will identify the best combination of grants for your circumstances.

Common ECO4 Application Mistakes to Avoid

Based on our experience helping hundreds of households apply for ECO4, here are the most common mistakes that delay or prevent successful applications:

• Using expired benefits evidence: your proof of benefits should be dated within the last 3 months. Request a fresh statement if yours is older.
• Not checking the EPC register: some properties have EPCs from 10+ years ago that may show a lower rating than the current condition. A new EPC assessment could result in a higher rating that disqualifies you, or a lower one that makes you eligible for more measures.
• Applying through unaccredited companies: only work with installers who are registered with TrustMark and approved to deliver ECO4 measures. Rogue operators have been known to carry out substandard work.
• Missing the Flex deadline: ECO4 Flex referrals must be processed by your local authority before the scheme closes. With the December 2026 deadline approaching, councils are experiencing high demand. Apply early.
• Not considering all measures: some households only request insulation when they could also receive a boiler or heat pump upgrade. Ensure your surveyor assesses all possible measures.

What Happens After ECO4 Ends?

ECO4 is scheduled to end on 31 December 2026. The government has not yet confirmed what will replace it, though a successor programme (likely called ECO5 or integrated into the broader Warm Homes Plan) is expected.

However, there is no guarantee that a replacement scheme will offer the same level of funding or eligibility criteria. If you qualify for ECO4 now, we strongly recommend applying before the deadline. Once the scheme closes, any unallocated funding will not be carried over.

Other grants will continue beyond December 2026, including the Boiler Upgrade Scheme (running to 2030) and the Warm Homes Local Grant. These may partially fill the gap left by ECO4, but they have income thresholds and do not cover the full cost of measures in the same way.

Real-World ECO4 Examples

Here are three examples of how ECO4 has been used to transform homes across the UK:

Example 1: Three-bedroom semi in Manchester. A household on Universal Credit with a home rated EPC F. ECO4 funded loft insulation, cavity wall insulation, and a new A-rated condensing boiler. The property improved to EPC C, and annual energy bills dropped by approximately £650.

Example 2: Two-bedroom terrace in Bristol. A single parent receiving Child Tax Credit. The property, rated EPC E, received solid wall insulation and a new heating system. The home improved to EPC C, with estimated annual savings of £550.

Example 3: Detached bungalow in Norfolk. A retired couple on Pension Credit with an oil-heated property rated EPC G. Through ECO4 combined with the BUS grant, they received loft insulation, underfloor insulation, and an air source heat pump. The property jumped to EPC D, with annual savings of over £900 compared to their previous oil heating costs.

Take Action Before December 2026

With the ECO4 scheme closing at the end of 2026, now is the time to act. Processing times for applications and installations can stretch to several months, especially as demand increases toward the deadline. Starting your application now gives you the best chance of securing funding and having the work completed before the scheme ends.

Get a free quote from Green Reach Energy today. We will check your ECO4 scheme eligibility 2026, identify all available grants, and connect you with approved installers in your area. The assessment is completely free with no obligation.

Frequently Asked Questions About ECO4 Scheme Eligibility 2026

Can private tenants apply for ECO4?

Yes, private tenants can benefit from ECO4, but you will need your landlord’s written consent for any work to be carried out on the property. The landlord does not need to pay anything — the scheme covers the full cost. It is worth noting that the improvements will increase the property’s EPC rating, which benefits the landlord in meeting future energy efficiency regulations for rental properties.

What if I do not receive any qualifying benefits?

You may still qualify through the ECO4 Flex route if your household income is below £31,000 or you meet vulnerability criteria (such as having a health condition worsened by cold, being over 65, or having children under 5). Contact your local authority to request an ECO4 Flex referral. Alternatively, get a free assessment through Green Reach Energy and we can help identify your eligibility.

How long does the ECO4 process take from application to installation?

The typical timeline is 8 to 16 weeks from initial application to completed installation. This includes the survey (1-2 weeks), application processing (2-4 weeks), and installation scheduling and completion (4-8 weeks). More complex measures like solid wall insulation may take longer. Starting your application early in 2026 is advisable to ensure completion before the December deadline.

Will I need to pay anything under ECO4?

In most cases, ECO4 covers the full cost of all approved measures with no contribution from the homeowner or tenant. In rare circumstances, a small customer contribution may be requested for very high-cost measures like external solid wall insulation, but this should be discussed and agreed before any work begins. Never pay upfront fees to apply for ECO4 — the application and survey should always be free.

Can I choose which measures are installed?

The surveyor will recommend measures based on what is needed to achieve a two-band EPC improvement. You can discuss preferences, but the final package must meet the scheme’s technical requirements. For example, if your home needs insulation to achieve the required improvement, you cannot decline insulation and request only a boiler upgrade. The measures are designed to work together as an integrated package.