Reduce your reliance on the grid with a solar battery.
A home solar battery lets you capture and store excess electricity for backup and night time use.
Our solar batteries start from £3,995.
Upgrade your solar system and make the most of your excess electricity with a storage battery.
Sunsynk - £3,995
Sunsynk’s top-grade Lithium-Iron Phosphate batteries are scalable up to 32 times - a maximum of 170kWh per inverter. So, you can add multiple batteries to your system to store more electricity. Plus, the integrated Battery Management System optimises your battery's performance automatically.
No matter where you are, monitor energy generation, battery status, grid, load statistics, and change settings with the Sunsynk Connect mobile app.
- W 440mm x H 620mm x D 135mm
- 10 years manufacturer warranty
- 5.3kWh battery capacity
- 90% round trip efficiency
Tesla Powerwall 3 - £8,495
The Tesla Powerwall 3 has an impressive 13.5kWh capacity complete with a built-in inverter, saving you space in your home without the need for a separate solar inverter.
Thanks to the Tesla One mobile app, monitor your home’s energy production and use in real time, with no subscription cost. Paired with the Backup Gateway, it automatically detects power outages from the grid, providing a quick transition to backup power.
- W 609mm x H 1099mm x D 193mm
- 10 years manufacturer warranty
- 13.5kWh battery capacity
- 89% round trip efficiency
Sunsynk - £3,995
Sunsynk’s top-grade Lithium-Iron Phosphate batteries are scalable up to 32 times - a maximum of 170kWh per inverter. So, you can add multiple batteries to your system to store more electricity. Plus, the integrated Battery Management System optimises your battery's performance automatically.
No matter where you are, monitor energy generation, battery status, grid, load statistics, and change settings with the Sunsynk Connect mobile app.
- W 440mm x H 620mm x D 135mm
- 10 years manufacturer warranty
- 5.3kWh battery capacity
- 90% round trip efficiency
Tesla Powerwall 3 - £8,495
The Tesla Powerwall 3 has an impressive 13.5kWh capacity complete with a built-in inverter, saving you space in your home without the need for a separate solar inverter.
Thanks to the Tesla One mobile app, monitor your home’s energy production and use in real time, with no subscription cost. Paired with the Backup Gateway, it automatically detects power outages from the grid, providing a quick transition to backup power.
- W 609mm x H 1099mm x D 193mm
- 10 years manufacturer warranty
- 13.5kWh battery capacity
- 89% round trip efficiency
Sell your excess energy back to the grid.
Thanks to our Smart Export Guarantee (SEG) tariff, you can earn up to 17.5p per kWh by exporting the excess solar energy you produce back to the grid.1
Get your battery in 3 easy steps.
1Get a fixed price quote.
Tell us a bit about your home and energy use, and we’ll give you a fixed price quote for your solar battery system.
2Choose your smart energy plan.
We’ll recommend a tariff to help you make the most of your battery, helping you store energy and save money.
3Installed and ready to go.
Pick a convenient date, and our team will install your battery, ready to start powering your home the smarter way!
Don't just take our word for it.
We'll always go that extra mile for you, but don't take our word for it, check out what our customers have to say.
Rated 4.5 / 5 based on 177973 reviews. Showing our 5-star reviews.
Support beyond your solar battery purchase.
Every battery module we install comes with:
- 10 year product warranty.
- 2 year workmanship warranty.
- Fully trained battery support team available.
- Online guides at your fingertips.
Get an extra £200 discount as an E.ON Next customer.
Use code SOLAR200 at checkout to apply the discount to solar and battery sales. Only existing customers qualify.2 T&Cs apply.
We offer professional solar battery installation.
For each installation, we will:
- Fit your battery onto the wall.
- Turn your power off for a short while to connect to the battery.
- Usually take just a few hours.
- Make sure your system is fully MCS certified.
Your solar battery FAQs.
Does E.ON Next provide solar battery finance?
E.ON Next doesn't offer finance or payment plans for solar batteries.
Where will the solar battery be installed?
We'll conduct a full survey of your home to decide on the best location for your battery. It has to be fairly close to your main consumer unit. We normally aim to place the battery in a cupboard, garage, utility room, or similar.
How big are solar batteries?
The typical wall space required for an inverter and battery system is just over 1m in width and between 1.3m and 1.9m in height. However, it depends on the power and size of the battery. You’ll need somewhere to house the battery and system, such as a garage or utility room.
What size solar battery do I need?
The solar battery size that’s right for you will depend on your lifestyle and specific needs. The best way to find out is by getting a quote from us. You can discuss everything in detail with one of our experts before going ahead with the installation.
What's the lifespan of a solar battery?
The average lifespan of a solar battery is around ten years, but this can vary depending on the type of battery, the usage, and the maintenance. Our battery systems come with a 10 year manufacturer’s warranty.
Can I have a solar battery outside?
Yes, you can. If we can’t find anywhere to fit a battery inside, you can have your solar battery wall mounted on the outside of your property. However, it shouldn't be in view of direct midday sun, (i.e. not on a south-facing wall) or be exposed to direct rain, and a roof or shelter will be required.
What are E.ON solar batteries made of?
We use lithium iron phosphate (LFP) battery chemistry, which is one of the safest types of lithium ion battery. LFP batteries can do more charge/discharge cycles than other types of solar batteries. As a result, LFP batteries have longer lifespans and a lower environmental impact when compared to cobalt-based batteries.
The legal bit.
1 Smart Export Guarantee (SEG) payments, are payments for electricity you export to the grid. These savings figures are based on the Next Premium v3 Export tariff from E.ON Next of 17.5p per kWh (kilowatt hour) for E.ON Next import-tariff customers who purchase a solar solution.
2 Offer applies to E.ON Next customers only when purchasing solar panels and a battery using the code SOLAR200. Terms and conditions apply.