Get free or discounted insulation with GBIS.*
We want to make new energy work for everyone, so we’re removing the barriers to improved home energy efficiency. This is why we’re offering free and discounted insulation measures through the Great British Insulation Scheme (GBIS), a government initiative helping homes across Britain boost their energy efficiency rating.
What’s more, the GBIS isn’t just for those on benefits or a low income, and you don't even have to be an E.ON Next customer. You could qualify simply from your council tax band and EPC rating. Read on to find out how the GBIS could help you get free1 or discounted insulation for your home.
Apply todayWhat is the Great British Insulation Scheme?
The GBIS aims to help eligible homes improve energy efficiency through potential access to free or discounted insulation.* There are lots of potential benefits when upgrading your home insulation – from making temperatures more consistent and boosting comfort to helping reduce your energy bills.1
How could GBIS home insulation help me save?
Did you know that the average household spends more than half their energy bill on heating and hot water? Yet, a large amount of that heat can seep outside through our windows, walls, roofs, and more. On average, around 33% of heat is lost through uninsulated walls alone.
Insulating your home is like wrapping it in a warm blanket in the winter, while cooling it down in the summer months. The insulation helps trap in the heat, so your boiler doesn’t have to work quite so hard to keep you warm. Improving your insulation through the Great British Insulation Scheme could save you energy and money on heating your home.
Cavity wall insulation
A semi-detached home with cavity wall insulation installed could save you an average of £240 per year.1
Cavity wall and loft insulation
With our dual measure offer, you could save up to £470 with cavity wall and loft insulation.1
And you should know, that a cold, damp home can be a breeding ground for health issues. In fact, according to research by Citizens Advice, upgrading insulation in 13 million UK homes could significantly improve people’s health, and save the NHS £2 billion by 2030.
Here's what our customers think...
"For me, it was an absolute 'no brainer' to have the work done; it's made such a big difference and would have cost a fortune without the scheme."
- Victoria, E.ON Next customer and colleague.
Understanding each insulation type and their benefits.
Each type of insulation offered through the Great British Insulation Scheme has different benefits. However, the option you’ll need really depends on where you live and the design of your home. If you’re scratching your head, don’t worry, we can recommend the most suitable upgrade based on your home and the scheme's criteria.
What insulation types does the GBIS cover?
There are several types of insulation you can receive through the Great British Insulation Scheme, and we'll recommend the most suitable upgrade based on your home. These upgrades could include:
Cavity wall insulation.
Loft insulation.
Room in roof insulation.
Could you be eligible for the GBIS?
Whether you’re a homeowner, landlord or tenant, you can apply for the Great British Insulation Scheme. However, tenants will need their landlord’s permission to go ahead. Our handy check list will help you find out if you’re eligible.
If you own your property.
You’ll need to have an EPC rating of D, E, F or G, and at least one of the following must apply.
Be in Council Tax band A to D in England (or A to E in Scotland or Wales). Check your Council Tax band.
Have at least one benefit recipient living in the property.
If you privately rent your property.
You’ll need to have an EPC rating of D or E, and at least one of the following must apply.
Be in Council Tax band A to D in England (or A to E in Scotland or Wales). Check your Council Tax band.
Be a benefit recipient.
Qualifying benefits.
The following list shows you which benefit options allow you to qualify for the GBIS:
- Income-based Job Seekers Allowance
- Income-related Employment and Support Allowance (ESA)
- Income Support
- Pension Credit
- Guarantee Credit
- Working Tax Credit
- Child Tax Credit
- Universal Credit
- Housing Benefit
- Child Benefit (subject to income caps)
Please be aware that the Great British Insulation Scheme is not currently available in Northern Ireland. If you qualify through our online eligibility checker, we'll need to perform a no-obligation home survey to ensure we can install insulation.
How to apply for the GBIS.
How does all of that sound? If you’re feeling ready to apply, it’s easy to get started – you don’t even have to be an E.ON Next customer! Getting your new insulation scheduled and installed through the Great British Insulation Scheme only takes a few simple steps.
Getting started.
To begin your application, you can check your eligibility online. It only takes a few minutes to complete.
Your phone consultation.
When you've booked your phone consultation, one of our friendly advisors will call within your selected 1-hour time slot. They’ll discuss which measures you could be eligible for.
Your eligibility checks.
We'll check to see if you qualify for funding, and if not, we can offer free energy saving advice.
If you rent your home.
We’ll need to get your landlord's permission, along with discussing their contribution towards the measure, if required. This will be done before your home visit.
Your home survey.
If you're eligible, our assessors will be in touch to arrange a visit to discuss which energy efficiency measures are best for your home.
The installation process.
We'll book your installation at a time that suits you. Then we'll send one of our TrustMark-registered installers to come out and do the rest.
Start your journey and save with us today.
Read to take the next steps? If you’re eligible, the Great British Insulation Scheme could be your pathway to a more sustainable and energy-efficient way of life.
Check if you qualify for the GBISContinue boosting your home’s energy efficiency.
If you’re eligible, the Great British Insulation Scheme could be your pathway to a more sustainable and energy-efficient way of life. Enhancing insulation around your home and finding smart complementary solutions, like air source heat pumps and solar panels, could help you on your way to a greener future – because who doesn’t want a cosy, eco-friendly home?
If you aren’t eligible for the GBIS, there are several other grants and schemes that might be able to take its place. Browse all our current energy-efficiency initiatives and find out if you qualify.
For other tips and advice on how to boost your home’s energy efficiency and potentially lower your energy bills, explore our useful A-Z guide.
Great British Insulation Scheme FAQs.
Who is eligible to apply for the GBIS?
What is a council tax band and how do I check it?
What is an EPC rating and how can I check my property’s rating?
Do I need to be an E.ON Next customer?
What types of insulation does the GBIS cover?
Can I choose what type of insulation I want?
What is the difference between Energy Company Obligation (ECO4) and GBIS?
What are the income caps for Child Benefit eligibility criteria?
* All improvements are subject to a home survey and terms and conditions. Any extra work, such as scaffolding, may come with an additional cost. Please note: While loft insulation is free as part of our combined package, it may require a customer contribution when installed on its own.
1 Estimated savings are based on Energy Saving Trust average calculations published in July 2025 based on insulating a semi-detached gas-heated home (loft and cavity wall insulation) with gas prices set at 6.3 p/kW in England, Scotland and Wales. Source: energysavingtrust.org.uk. Find out how these calculations are created here: energysavingtrust.org.uk/about-us/our-data.
2 CO2 savings based on Energy Saving Trust average calculations updated in July 2025. Find out how these calculations are created here: energysavingtrust.org.uk/about-us/our-data.
3 Heat loss reduction figures are based on Energy Savings Trust calculations updated in July 2025.
4 Grant amount is calculated using the average cost of a typical installation as determined by the Energy Savings Trust updated in July 2025. This may not accurately reflect the actual subsidy of your specific installation, which could be higher or lower.