Energy Company Obligation 4
Supplier-funded home energy improvements for low-income and benefits-eligible households, subject to eligibility, survey and scheme rules.
Guidance only. Funding is not guaranteed. Scheme rules and availability may change.
WHAT THIS ROUTE IS
ECO4 is a government-mandated scheme obligating large energy suppliers to fund energy efficiency improvements for low-income and vulnerable households. It aims to bring homes to EPC band C or above through insulation, heating upgrades, and other eligible measures. There is no upfront cost to eligible households.
GEOGRAPHY
England, Scotland, and Wales
FUNDER
Large energy suppliers (obligated under the ECO4 scheme)
ADMINISTRATOR
Ofgem (regulatory oversight); delivered by energy suppliers via approved contractors
ROUTE SIGNALS
Supplier-fundedMeasures this route may support
The following measures may be included where applicable, subject to scheme rules, property survey and eligibility assessment.
Measures are indicative. Not all measures may be available in every case. Subject to installer assessment and scheme rules.
Who may qualify
The following criteria may apply. These are indicative only and subject to scheme rules and installer assessment.
Households receiving qualifying benefits such as Universal Credit, Pension Credit, Child Benefit (income-limited), Child Tax Credit, or Working Tax Credit
Households with a combined annual income below £31,000 (income-based route)
Properties with an EPC rating of D, E, F, or G
Owner-occupiers and eligible private tenants in England, Scotland, and Wales
Eligibility depends on scheme rules, a property survey and installer assessment. These criteria are indicative only. Curator Renovatis results are not a determination of eligibility.
Indicative support and contribution
Supplier-fundedLEVEL OF SUPPORT
Eligible measures may be funded by the obligated energy supplier with no upfront cost to the household, subject to a property survey, installer confirmation and scheme eligibility. The value of works varies by property type, current energy performance, and the measures required.
CONTRIBUTION AND CHECKS
Eligible households may pay nothing upfront. Works may be funded by the obligated energy supplier, subject to survey and installer confirmation. Not a guarantee of free works.
Subject to scheme rules, survey findings and funding availability. Not a guarantee of funding.
Indicative funding breakdown
medium confidenceWhat could change this?
This is not a quote or a guarantee. Final costs depend on a property survey, installer quote, grant approval, property condition and funding availability.
ECO4 funds eligible measures in full for qualifying households. There is no upfront cost. The value of works (insulation, heating) varies by property and is determined by a surveyor. Eligibility must be confirmed by an accredited installer and energy supplier.
What information you may need
Having the following information to hand can help you complete the eligibility check accurately.
Property postcode and EPC rating (if known)
Details of qualifying benefits or household income
Property type, construction type, and approximate age
Current heating system type and age
Whether you own or rent the property
IMPORTANT ELIGIBILITY INFORMATION
- Eligibility is determined by scheme rules, a property survey, and your installer, not by an online check. Our results are indicative only.
- The scheme is delivered through energy supplier supply chains. A qualified installer will carry out a property survey before any work is confirmed or funded.
- Funding availability and scheme rules may change. Always verify current eligibility criteria with an accredited installer or Ofgem.
- Curator Renovatis does not guarantee grant funding and is not affiliated with Ofgem or any energy supplier.
DATA SOURCES AND ACCURACY
Information last reviewed: 30 June 2026. Scheme rules can change. Check official sources before making any decisions.
Official sources
CHECK YOUR POSITION
Ready to check this route?
Curator Renovatis checks this route alongside other major tracked funding routes.
Indicative results only. No guarantee of funding.