O% APR* for 5 years? It's time to store and save with a battery.
Lower your bills by storing your electricity for the expensive peak hours. You could spread the cost over 5 years. Eligibility, T&Cs apply.
*E.ON Energy Installation Services Limited is a credit broker and not a lender. Credit provided by HomeServe Finance Limited. Finance available subject to status, affordability and a credit check. Terms and conditions apply. More info on finance options.
Our home batteries start from £3,995.
Upgrade your solar system and make the most of your excess electricity with a storage battery.
Sunsynk Elite - £3,995
Sunsynk’s new, stackable Lithium-Iron Phosphate batteries are scalable up to 36 times - a maximum of 184kWh 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.
- 5.12kWH battery capacity (4.6kWh usable)
- Battery packs contain integrated heating
- 90% depth of discharge
- 10 years manufacturer warranty
- 1-6 modules per stack
- W 720mm x H 596mm x D 255mm
Tesla Powerwall 3 - from £7,795
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 optional 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 Elite - £3,995
Sunsynk’s new, stackable Lithium-Iron Phosphate batteries are scalable up to 36 times - a maximum of 184kWh 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.
- 5.12kWH battery capacity (4.6kWh usable)
- Battery packs contain integrated heating
- 90% depth of discharge
- 10 years manufacturer warranty
- 1-6 modules per stack
- W 720mm x H 596mm x D 255mm
Tesla Powerwall 3 - from £7,795
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 optional 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!
Pay for your home battery, your way.
Pay with finance.
Payment plans are available, including up to 5 years 0% APR*. So you may be eligible to spread the cost if you can’t pay upfront. More info on finance options.
Pay in full.
Or, you can pay the full amount for your solar battery upfront. It's quick and easy to do with no need for a credit check.
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 244627 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.
Power your small business with solar and battery storage.
Cut energy costs, improve resilience, and take control of rising electricity prices.
- Tailored solar and battery solutions designed around your business needs and budget
- Clear 3D system design with simple projections for savings and return on investment
- End-to-end support from consultation through to installation and ongoing care
- Easy-to-use monitoring tools so you can track performance and savings in real time
Get an extra £200 discount as an E.ON Next customer.
Use code SOLAR200 at checkout to apply the discount when purchasing solar and battery together. Use code SOLAR150 to save £150 on battery storage only. Only existing customers qualify.3 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.
Important information
* E.ON Energy Installation Services Limited is a credit broker not a lender and work exclusively with HomeServe Finance Limited who acts as the lender under Firm Reference Number 994955. Any credit is subject to status, affordability and a credit check; HomeServe Finance Limited terms and conditions apply.
E.ON Next Energy Limited is an Introducer Appointed Representative of E.ON Energy Installation Services Limited and is authorised and regulated by the Financial Conduct Authority under Firm Reference Number 973651.
Zuno Partners Limited is an Appointed Representative of E.ON Energy Installation Services Limited and is authorised and regulated by the Financial Conduct Authority under Firm Reference Number 1043798.
E.ON Energy Installation Services Limited is authorised and regulated by the Financial Conduct Authority for credit broking services under Firm Reference Number 750410. Registered in England and Wales under company number 09965944 at Trinity House, 2 Burton Street, Nottingham, NG1 4BX.
These finance options are part funded by the UK Government's Warm Homes Loan Scheme, which provides funding to lenders to enable them to offer a lower interest rate or a longer interest free term. To apply for this loan you must not have received other government funding for this work, except a Boiler Upgrade Scheme or Home Energy Scotland Grant. You must also agree the Government may inspect the property and installation to verify the work has been completed. E.ON Energy Installation Services Limited is a credit broker not a lender. Credit is provided by HomeServe Finance and is subject to credit check, status and affordability. HomeServe Finance Limited terms and conditions apply.
Your solar battery FAQs.
What solar battery financing options are available?
Payment plans are available, including up to 5 years 0% APR finance or 4.6% APR* finance for 10 years. So you may be eligible to spread the cost if you can’t pay upfront.
*Representative example for 120 month order: £9,695 purchase. Deposit £0. Annual rate of interest 4.48% p.a. Representative APR: 4.6% APR. Total amount of credit £9,695 paid over 120 months as 120 monthly payments of £100.38 at 4.48% p.a. Cost of finance £2,350.60. Total amount payable £12,045.60. E.ON Energy Installation Services Limited is a credit broker and not a lender. Credit provided by HomeServe Finance Limited. Finance available subject to status, affordability and a credit check. Terms and conditions apply.
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 or when using SOLAR150 for purchasing a battery storage system. Terms and conditions apply.
Representative example for 120 month order: £3,995 purchase. Deposit £998.75. Annual rate of interest 7.63% p.a. Representative APR: 7.9% APR. Total amount of credit £2,996.25 paid over 120 months as 120 monthly payments of £35.77 at 7.63% p.a. Cost of finance £2,294.90. Total amount payable £5,291.15. E.ON Energy Installation Services Limited is a credit broker not a lender and works exclusively with HomeServe Finance Limited who acts as the lender under Firm Reference Number 994955. Any credit is subject to status, affordability and a credit check. HomeServe Finance Limited terms and conditions apply.