We’d like to give you a home battery and £20 a month off your energy bill.
You could be eligible for a home battery at no cost¹ and up to £250 off your energy bill every year. Exit fees and T&Cs apply.
What's Battery Boost?
Battery Boost is our new energy tariff designed to put money back in your pocket while supporting the UK’s energy transition.
The deal is simple, you’ll get up to £250 across the year in monthly credits2 while we install a home battery for you at zero cost, offering an effortless way to lower your household energy bills.
How does Battery Boost help your home?
Guaranteed bill credits.
Get a handy £20.83 credited to your energy bill every single month (that's £250 a year!).
Battery included.
We own, install, and maintain the battery at no cost to you so you can get the rewards without the responsibility.
Fit-and-forget.
The battery is compact, sits neatly outside, and we manage it all behind the scenes for you. Just use your power exactly as you normally do.
Support the grid.
Your battery helps balance energy demand during peak times, contributing to the UK’s shift toward cleaner energy.
Things to know.
Battery Boost is built to power your home for the long haul, but we believe in keeping your options flexible. After your initial 12-month term, you can cancel anytime and have your battery removed at no cost.
Leaving Battery Boost within the first year incurs a £250 exit fee, while leaving your energy tariff within its own 12-month term carries a separate £50 fee.
How does Battery Boost work?
We take the complexity and the cost out of home battery storage.
Overnight.
We automatically charge your battery while you sleep using excess energy from the grid.
Daytime.
Your home runs on stored power during peak hours, reducing overall strain on the local energy network.
Grid support.
We automatically export surplus energy when the grid needs it most, earning you a simple fixed credit without you needing to lift a finger.
What type of home battery is installed?
We've made Battery Boost completely effortless and no cost for you, as we fund the E.ON Next-owned home battery, its installation, and maintenance. We manage the battery entirely to help the grid, and in return, you receive a guaranteed fixed credit of £20.83 on your bill every month and you'll only pay for the energy you use at a low fixed rate.
Fox ESS Evo battery
We’ll install the Fox ESS Evo, an advanced all-in-one domestic energy storage system. Designed for modern homes, the Fox ESS Evo combines a high-performance hybrid inverter with a large-capacity lithium-ion battery into a single, compact unit designed for exterior wall or ground-mounted installation.
- Manufacturer & Model: Fox ESS Evo All-In-One System
- Battery Storage Capacity: 13.5 kWh
- Maximum Power Output: 11 kW
- Round Trip Efficiency: 97.5%
- Warranty: 10-Year Manufacturer Warranty
- Unit Dimensions: W 609mm × D 193mm × H 1099mm
- Installation: Compact, weather-sealed outdoor residential unit
Fox ESS Evo battery
We’ll install the Fox ESS Evo, an advanced all-in-one domestic energy storage system. Designed for modern homes, the Fox ESS Evo combines a high-performance hybrid inverter with a large-capacity lithium-ion battery into a single, compact unit designed for exterior wall or ground-mounted installation.
- Manufacturer & Model: Fox ESS Evo All-In-One System
- Battery Storage Capacity: 13.5 kWh
- Maximum Power Output: 11 kW
- Round Trip Efficiency: 97.5%
- Warranty: 10-Year Manufacturer Warranty
- Unit Dimensions: W 609mm × D 193mm × H 1099mm
- Installation: Compact, weather-sealed outdoor residential unit
Real savings, zero effort.
Hear from Angus in Lincolnshire.
Register today.
Spaces are limited to 1,000 batteries for our first rollout. It takes just 60 seconds to register your interest and find out if you can take part.
1Join the waitlist.
Fill out our quick registration form to register your interest.
2Eligibility check.
Sit back and relax while our team checks your eligibility. If you are, we’ll be in touch soon.
3Priority installation.
If your home is suitable, we’ll contact you to arrange a free survey before your no-cost E.ON Next battery installation.
Is my home eligible?
Battery installations may be suitable for many homes, subject to property and technical requirements.
Requirements:
Suitable space for a large suitcase-sized battery outside your home (usually on an external wall or in an outdoor space like a garage or sheltered area)
To be the homeowner, and either have a working smart meter or be happy to have one installed.
Home does not currently have existing solar panels or an EV charger installed.
To be an E.ON Next customer or switch to an E.ON Next electricity tariff prior to joining Battery Boost.
Battery Boost is supported by National Energy Action.
Battery Boost FAQs.
When will Battery Boost be available in my area?
We select locations based on grid requirements and local demand. By registering your interest, you ensure you’ll be the first to know when your area is chosen. Our first trial locations will be announced during the summer of 2026.
What benefits will I receive as part of Battery Boost?
Once your battery is installed, you will see two key updates on your monthly bill:
A £20.83 monthly credit: We’ll add a "Battery Boost" credit to your bill every month as a thank-you for hosting the battery, which adds up to a £250 annual benefit.
Export credits: You will see a new line on your bill for electricity sent back to the grid. This matches the cost of the electricity used to charge the battery in the first place, meaning the extra energy used to charge it balances out on your bill.
The proportion of your electricity from renewable sources will increase and your home will help to balance the energy system, supporting the energy transition.²
All batteries lose a small amount of energy when charging and discharging. This can add between £1 and £3 to your monthly bill, but this is fully offset by your £20.83 monthly credit, leaving you with a net saving.
By participating, you’ll increase the proportion of your electricity from renewable sources and help balance the energy grid, directly supporting the UK’s energy transition.
How big is the battery, and where is it installed?
Our largest batteries are roughly the size of a large suitcase (115cm x 60cm x 28cm). They are typically mounted on an external wall, though in some cases, they can be installed in a garage or utility room.
Do I need to do anything to operate the battery?
No. We manage the battery entirely on your behalf—no apps or in-home displays are required. Occasionally, we may request a visit at your convenience to perform routine maintenance or system checks.
Are there any additional costs?
No. The survey, equipment, installation, and ongoing maintenance are all provided at no cost to you. The only potential charge is an exit fee if you cancel the agreement within the first year.
What happens if I move or want to cancel my Battery Boost tariff?
After the first 12 months, you can cancel your agreement for free, and we will remove the battery at no cost. If you choose to cancel within the first 12 months, an exit fee applies to cover the initial installation costs. Specific fee details will be provided when Battery Boost launches in your area.
Does it cost anything to join the waitlist?
No. Registering your interest is completely free and carries no obligation to proceed.
The legal bit.
¹ Accepted customers can receive up to £250 in energy bill credits towards their energy bill over 12 months, paid as monthly bill credits of £20.83. If you leave the Battery Boost scheme before completing the 12-month term, you’ll receive only the credits applied up to your leaving date. There is no upfront cost for the battery or its installation. If you leave during the initial 12-month term, you will be charged an exit fee of £250 to partially cover the cost of removing the battery from your home. If you wish to leave after your 12-month term comes to an end, a £0 exit fee will apply. Exit fees to tariffs may apply. Full eligibility and T&Cs apply.
² Homes relying on scheduled off-peak overnight battery imports will consume a 12-25% greater proportion of renewables than homes drawing energy from the grid at standard peak times. Analysis based on National Energy System Operator (NESO) data, available at: Britain's Electricity Explained: 2023 Review | National Energy System Operator and NESO Data Portal API, available at: https://www.neso.energy/data-portal