Stack your storage savings: Get up to £1,000 off solar and battery or battery only packages.

Please note: This promotion has now finished. It ended at 5pm on 24 September 2026.

Key takeaways:

• Limited time offer: Get £1,000 off batteries packages of 13 kWh or more (e.g., Tesla battery or 3 Sunsynk batteries) or get £500 off 10-12 kWh storage (e.g., two Sunsynk modules). Ends at 5pm on 24 September 2026. T&Cs apply.

• For every home journey: Discounts apply whether you request a solar panel and battery quote for a complete system or want to purchase a battery-only solution.

• Positive customer stories: Homes in the E.ON Next and Northern Powergrid battery trial saved nearly £500 a year.

• Stack existing discounts: If you're already one of our customers, simply enter your customer discount code at checkout to apply extra savings.

Getting control over your household energy can feel tricky, but we’re always looking at ways to make it simpler and more achievable.

To help boost your grid independence and future-proof your home against energy price fluctuations, we’ve launched a limited-time solar battery offer.

Whether you want to store electricity generated from your rooftop solar panels or top up on overnight power with a time of use tariff, home battery storage could help you better manage your running costs.

Here’s everything you need to know about our solar battery offer.

How our solar battery storage deal works.

Our latest deal gives you money off our Tesla and Sunsynk battery systems. So, whether you’re starting fresh or upgrading an existing setup, you could trim setup costs if you’re eligible. The discount applies automatically to eligible quotes.

Here’s how the promotion breaks down:

• What you could get: Get £1,000 off batteries packages of 13 kWh or more (e.g., Tesla battery or 3 Sunsynk batteries) or get £500 off 10-12 kWh storage (e.g., two Sunsynk modules).

• Limited-time deal: Offer ends at 5pm on 24 September 2026. T&Cs apply.

• Stackable customer savings: If you already get your energy from us, you can enter your existing customer discount code at checkout to unlock extra savings.

• Spread the cost over 3 years: Spread the remaining system costs across up to 36 months with 0% APR, keeping your monthly outgoings more manageable.1

• Universal journey access: Discount pricing is live whether you choose to buy a solar battery storage system as a standalone add-on or opt for a full solar package.

How pairing a smart tariff with home tech could help reduce your energy bills.

You can turn your solar battery into an intelligent energy partner by pairing it with our Next Optimise, our smart tariff. Next Optimise connects to wholesale prices and uses smart AI automation to charge your battery when prices dip. It then uses or exports stored energy when prices are higher. Learn more about Next Optimise.2

Customer story: How Janet cut her energy bills with an automated home battery.

Janet from Knaresborough saw big savings with an automated home battery thanks to our E.ON Next and Northern Powergrid battery trial.

For Janet, the change was about more than just numbers. Until the trial, Janet had cut back on baking big cakes because keeping her oven on for long periods felt too expensive during peak hours. However, with an automated home battery storing off-peak power, she could return to baking freely without worrying about spikey daytime energy rates.

On average, participating households saved almost £500 a year on electricity bills through the trial.

Choosing the right battery size for your home and electric vehicle (EV).

Getting the right battery capacity depends on your daily electricity use and whether you drive an EV. Selecting the right size helps to ensure you don't overpay for capacity you won't use - or run out of stored energy halfway through the evening.

Can I stack extra discounts if I’m already an E.ON Next customer?

Yes, you can. If you already get your electricity or gas from us, you can unlock stacked savings on top of our new battery deal.

When you’re exploring standalone solar battery options or a full solar and storage installation, simply enter your existing customer discount code when you go to checkout. This will apply an additional discount on top of the £1,000 off Tesla Powerwall 3 or £500/£1,000 off Sunsynk batteries discounts.

Start saving today: Lock in your battery deal.

Energy prices may shift, but having control over when and how you use power keeps your household budget far more predictable. Choosing our battery deal could upgrade your grid independence and help future-proof your home against potential energy price fluctuations.

Please note: This promotion ended at 5pm on 24 September 2026.

See solar battery prices.

• 1. 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. 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.
• 2. Next Optimise eligibility and Terms and Conditions apply. (E.ON Next)