Battery Storage
As of February 2024, all solar battery installations in the UK benefit from 0% VAT, making it even more affordable to take control of your energy use.
Get More From Your Solar – Add Battery Storage & Start Saving More
Store your unused solar energy, reduce your bills, and take control of your electricity – with a professional retrofit from your local experts.
Key benefits:
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Use your solar energy day and night
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Cut electricity bills and grid reliance
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Suitable for most existing solar systems
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Installed by trusted local specialists
Battery Prices
Battery System
Hybrid Inverter/AC Charger
Battery Storage (kWh)
Designed For
Warranty
Average Final
Price
Fox ESS
EP6 - 5.8kWh
Fox AC Charger/ Hybrid Inverter
5.8kWh
Small PV systems;
2–4kWp
Low – medium
evening usage
Great for starting small and upgrading later without replacing the system
10-year product warranty
£3,636
Fox ESS
EP12 - 11.52kWh
Fox AC Charger/ Hybrid Inverter
11.52 kWh
Medium PV systems; 4–6kWp
Families with higher usage
10-year product warranty
£4,596
Fox ESS EQ4800 stackable
Fox AC Charger/ Hybrid Inverter
9.32kWh
Larger PV systems >6kWp
High‑usage homes
EV + heat pump setups
10-year product warranty
£4,380
BYD Battery‑
Box Premium HVE Stackable 8.6kWh
BYD AC Charger/ Hybrid Inverter
8.6 kWh
Larger PV systems >6kWp
High‑usage homes
EV + heat pump setups
£4,397
15-year warranty
Sigenergy
Stor 10.4 kWh
Sigenergy AC Charger/ Hybrid Inverter
10.4 kWh
Larger PV systems >6kWp
Average usage homes
EV + heat pump setups
10-year product warranty
£6,672
SolaX X1-FIT G4 3.68kW
SolaX AC Charger/ Hybrid Inverter
10.8kWh
Small PV systems; 2–4kWp
low–medium evening usage
10-year product warranty
£5,316
Tesla
Powerwall 3
Tesla Gateway Back Up
System
Tesla AC Charger/ Hybrid Inverter
11.04kW
Larger PV systems >6kWp
High usage homes
EV + heat pump setups
10-year product warranty
£8,284
HOW IT WORKS
Free Assessment - press here to book your free assessment
We review your current solar setup and energy use
Custom Design
We recommend the right battery system for your home
Professional Installation
Fully installed, integrated, and ready to save
Most installations completed in just one day
We offer a range of battery systems to suit different homes, usage levels, and budgets.
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✅ Established since 2006✅ 2-Year Workmanship Guarantee✅ Free Monitoring Included
WHAT’S INCLUDED
Every installation includes:
Battery system + inverter/charger
Full installation & commissioning
Integration with your
existing solar
Monitoring app setup
Free online fault monitoring
2-year workmanship guarantee
WHY CHOOSE NORTHERN SOLAR?
Local experts – we don’t disappear after install
Supporting systems for their full lifespan
Decades of experience (est. 2006)
Specialists in retrofit battery upgrades
Work with leading global brands
We’re not just installers, we’re long-term partners
in your energy system.
FAQ SECTION
Will a battery work with my system?
You have a hybrid inverter, or your existing inverter is compatible with a separate AC‑coupled battery system. Most UK systems can accept a battery with either a hybrid inverter upgrade or an AC ‑coupled battery such as Fox ESS, GivEnergy, BYD, etc.
How long does installation take?
For a typical home, installation usually takes 1–2 days depending on the size of the system and roof type. Battery installations may add an extra half‑day to a full day.
Can I add more storage later?
Most modern battery systems are modular, which means you can start with a smaller capacity and expand it as your energy needs grow.
Do I need planning permission?
In most cases, no. Solar panels on homes fall under Permitted Development in the UK, meaning you can install them without applying for planning permission
Will this still work in winter?
Yes. Modern solar battery systems are designed to work efficiently all year round, including during the colder winter months. In fact, lithium‑ion batteries perform very well in cool temperatures, and winter has no negative impact on their ability to store or release energy.
What does change in winter is the amount of solar generation, not the battery itself. Shorter days and lower sun angles mean your panels may produce less electricity, so the battery may not fill as often — but it will still operate normally, safely, and reliably.
At Northern Solar, all our battery systems are installed with the correct weather protection, ventilation, and temperature considerations to ensure year‑round performance.
Brands we use
