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The UK government offers a range of energy efficiency grants to help households reduce energy bills, improve insulation, and transition to low-carbon heating systems. With energy prices continuing to pressure UK families, these government grants for energy efficiency target those in low-income brackets or at risk of fuel poverty.
According to the UK Parliament, the average UK household spends around 10% of its monthly income on energy, making energy-saving grants not just desirable, but essential.
In this blog, we break down:
- Available UK energy efficiency grant schemes
- Key eligibility criteria
- Step-by-step application process
- New 2025 updates and benefits for homeowners and tenants
UK Government Grants for Energy Efficiency
Whether you need a fully-funded government grant for energy efficiency measures or partial funding to support the process, UK government grants have got you covered. The final goal of these energy efficiency supplements is to create British homes with more energy-efficient, more comfortable and lower carbon emissions. These supplements reduce the dependence on fossil fuel for heating, which emits high levels of greenhouse gases and adversely affects the environment.
To ensure that houses that have low income and struggle to keep their homes are prioritized, these have the grants with qualifying norms. Home should meet them to reach available help.
The government has expanded the eligibility under the local government-led EOCO4-flex routes, so that more houses for more houses for energy-saving measures such as solar cells and insulation.
1. Energy Company Obligation (ECO4)
Designed to deliver energy efficiency and heating measures in Great Britain, the ECO4 scheme aims to alleviate fuel poverty. This scheme provides whole-house energy efficiency grants to low-income households living in poorly insulated homes.
Households in England, Wales, and Scotland can access energy efficiency grants that include free boilers, air source heat pumps, central heating systems and insulation upgrades to improve their EPC rating.
Eligibility Criteria for ECO4
To avail of these grants, homeowners or private tenants (with landlord’s permission) are required to meet the criteria below:
- You must be a homeowner or a private tenant with the landlord’s permission for upgrades to the property.
- Must have a low EPC rating of D, E, F, or G.
- Gas metre installed before April 2022
- Boiler installed before 2005 (Non-condensing)
- Your household income must be below £31000 annual threshold.
You must receive any of these benefits:
- Income-based Job seeker’s Allowance (JSA)
- Income-related Employment & Support Allowance (ESA)
- Income Support Allowance (ISA)
- Working Tax Credit (WTC)
- Child Tax Credit (CTC)
- Universal Credit (UC)
- Pension Guarantee Credit
- Pension Savings Credit
- Child Benefit
- Housing Benefit
Households that do not meet these criteria can contact their local council to check their eligibility under ECO4 Flex. Under ECO4 Flex, councils can now refer households not on benefits but at risk due to health conditions, low income, or high energy bills. More flexibility means more people qualify for essential upgrades under these energy efficiency grants.
Measures Installed Under ECO4 Grants
Below are the measures installed under these grants:
- Free Boiler Grants: Replace your old non-condensing boiler with a modern, energy-efficient condensing boiler.
- Air-Source Heat Pump Grants: Ideal for homes off the gas grid, offering eco-friendly, cost-effective heating.
- First-Time Central Heating Grants: For households without central heating system, making homes warmer with no upfront cost.
- Insulation Grants: Improve loft, cavity wall, and underfloor insulation to reduce heat loss and lower energy bills.
- Solar PV Panels: Households receiving fabric-first upgrades may now qualify for solar panel installation to generate clean electricity and lower costs further.
If you meet the eligibility criteria, you can proceed to the application process to take advantage of these energy efficiency grants.
Application Process for ECO4
The application process for the ECO4 scheme is straightforward if you meet the eligibility criteria. Here’s how to apply:
- Check Eligibility Criteria: Visit the ECO Energy Services website and use the eligibility calculator.
- Fill out the Contact Form: If eligible, complete the form so a team member can contact you.
- Get Your Heating System Installed: After a home survey, appropriate measures will be installed upon approval.
Most installations under ECO4 are now completed within 2–3 weeks of approval, with minimal disruption.
2. Boiler Upgrade Scheme (BUS)
The Boiler Upgrade Scheme is another initiative to help households become energy-efficient and reduce carbon emissions. Under this scheme, UK households can replace low-efficiency and fossil-fuel boilers with renewable energy heating systems such as air source heat pumps or biomass boilers.
These upgrades contribute significantly to reducing carbon emissions, helping the UK move toward its net-zero goal.
Eligibility Criteria for BUS
The eligibility criteria for BUS are quite simple:
- The property must be located in England or Wales.
- BUS applies only to retrofitting properties with existing fossil fuel or electric heating systems.
- The property should have a valid Energy Performance Certificate issued within the last 10 years.
- The property should be of an eligible type; newly constructed properties are ineligible.
Application Process for BUS
For the application process, you can check the eligibility criteria on the official government website and contact a skilled installer to your work installation done, if eligible.
3. Great British Insulation Scheme
Great British Insulation is another government-funded scheme that provides insulation grants to underprivileged households in the UK.
This scheme only provides energy efficiency grants to your insulated homes. These grants provide funding for loft insulation, cavity wall insulation, solid wall insulation, and many other insulations.
Eligibility Criteria for the Insulation Scheme
The eligibility criteria are very simple for insulation grants:
- You must be a homeowner or private tenant.
- Your home must have poor insulation, and you must meet certain income or benefit criteria.
Application Process for the Insulation Scheme
To apply, you can contact ECO Energy Services, a reliable installer, our team will apply on your behalf and once approved, your insulation will be installed.
Check Eligibilty For ECO4 Scheme
Get Free Heating System Installed Today at your Property Under ECO4!
Warm Homes Local Grant
Some councils offer Warm Homes: Local Grant to support low-income households with energy efficiency grants. Funding often includes:
- Up to £15,000 for insulation, draught-proofing, glazing, solar PV & battery
- £15,000 extra for low-carbon heating (e.g. heat pumps)
- Application Process
- Visit your council’s website
- Fill out the eligibility form
- Schedule a home assessment
- Approved measures installed
Additional Support Schemes
- Warm Home Discount: £150 off electricity bill for eligible households until March 2026
- Household Support Fund: Local council grants for struggling households (2025–26)
- Energy debt relief: Grants up to £2,000 via schemes like British Gas Energy Trust
Solar Panel Grants & VAT Exemption
- Under ECO4 and LA-Flex, solar panel installations are now covered as part of fabric-first upgrades
- Enjoy 0% VAT on solar PV and batteries through 2027
- Smart Export Guarantee pays for surplus energy exported
Final Thoughts
To conclude, there are three major government energy efficiency grants available for UK households in 2025. These include:
- ECO4 for heating systems and whole-house upgrades
- Boiler Upgrade Scheme for switching to renewable heating
- Great British Insulation Scheme for improving insulation
They all prioritize households at risk of fuel poverty and those who struggle to keep their homes warm.
In this article, we have compiled everything you need to know about these schemes — from measures and eligibility criteria to the application process.
Contact ECO Energy Services today to upgrade your heating systems at zero upfront cost under the ECO4 scheme
FAQs
These grants specifically target households at risk of fuel poverty or those who struggle to keep their home warm.
To apply for the Warm Homes Local Grant, follow these simple steps:
- Check Eligibility Criteria: Visit your local council website to ensure you qualify for the scheme.
- Fill Out the Contact Form: Once you are eligible for the Warm Homes Local Grant, you can fill out the provided form on your local authority’s website.
- Home Assessment: After initial approval, an assessor will visit your property to determine which energy efficiency measures would be most suitable.
- Get your Energy Efficiency Measures Installed: After the survey, the team will decide which measures need to be carried out.
These grants serve the purpose of reducing the use of fossil fuels for heating reasons, which emit more greenhouse gases, impacting the environment badly.
The benefits of cavity wall insulation grants include:
- Reduced energy bills by preventing heat loss through walls
- More comfortable home environment with consistent temperatures
- Lower carbon emissions, helping meet the UK government’s goal of reducing carbon emissions by up to 68% by 2030
- Improved Energy Performance Certificate (EPC) rating of your property
- Zero upfront costs for eligible households
- Quick installation with minimal disruption
These insulation grants prefer the households at the risk of fuel poverty and those who struggle to keep their homes warm.
You must be a homeowner or a private tenant with the landlord’s permission for upgrades to the property. Must have a low EPC rating of D, E, F, or G. Gas metre installed before April 2022 Boiler installed before 2005 (Non-condensing) Your household income must be below £31000 annual threshold. You must receive any of these benefits:
- Income-based Job seeker’s Allowance (JSA)
- Income-related Employment & Support Allowance (ESA)
- Income Support Allowance (ISA)
- Working Tax Credit (WTC)
- Child Tax Credit (CTC)
- Universal Credit (UC)
- Pension Guarantee Credit
- Pension Savings Credit
- Child Benefit
- Housing Benefit
The application process for the free boiler replacement is quite simple if you meet the eligibility.
