- The best solar batteries balance price, warranty, upgradeability and features to match your needs. Using a battery can boost the amount of solar used from ~45% to ~85%.
- Prices for ~14 kWh batteries range from £4,000 to £8,000, which directly impacts profitability. Use our free battery sizing calculator below to find your ideal size.
- Tesla Powerwall 3 (£8,000–£10,500) is the premium choice UK solar battery, with a delightful app, and generous warranty. GivEnergy All-in-One 2 (£5,500–£7,500) is a close second, with similar capacity and lower price point.
- You don’t need solar panels to benefit from having an energy storage battery, you can grid-charge them when electricity is cheap and use the power later when it’s expensive.
There’s a lot to consider when selecting the best solar battery for your home battery storage needs. The best battery will come down to your exact requirements, but there are a few key things to look out for: the length of warranty, smart tariff integration, what you plan on doing with it (some people use them without solar panels), if you need backup power or not, and how much power you plan to store.
This guide reviews the top solar batteries available in the UK in 2026, explaining what makes each stand out and helping you find the best match for your needs.
How we ranked the best solar batteries: Our research team selected this top list based on the same factors homeowners are looking for. Installed price, cost per kWh, warranty, cycle count, brand strength, specifications and user reviews. We estimate you’ll save about 14 hours of research reading this 21 minute guide.
Best Solar Battery Brands and Prices Compared
| Battery | Capacity | Installed Cost | Warranty |
|---|---|---|---|
| 🔋 Small Batteries (3–5 kWh) – best for flats, WFH users, budget installs | |||
| Duracell Dura5Duracell / Puredrive~£781/kWhBUDGET PICK See more ↓ | 5.12 kWh | £3,500–£4,500 | 10 years |
| Pylontech Force-H2Pylontech~£744/kWhCHEAPEST PER kWh See more ↓ | 4.84 kWh | £3,000–£4,200 | 10 years |
| Fox ESS Energy Cube EQ2900Fox ESS~£720/kWhBEST VALUE See more ↓ | 5.76 kWh | £3,500–£4,800 | 12 years |
| EcoFlow PowerOceanEcoFlow~£863/kWh15-YEAR WARRANTY See more ↓ | 5.1 kWh | £3,800–£5,000 | 15 years |
| Enphase IQ Battery 5PEnphase~£1,050/kWhBEST FOR RETROFIT See more ↓ | 5 kWh | £4,500–£6,000 | 15 years |
| AlphaESS SMILE-G3AlphaESS~£885/kWh See more ↓ | 4.8 kWh | £3,500–£5,000 | 10 years |
| 🔋🔋 Medium Batteries (8–10 kWh) – the sweet spot for most UK homes | |||
| GivEnergy 9.5 kWhGivEnergy (UK)~£553/kWhUK FAVOURITE See more ↓ | 9.5 kWh | £4,500–£6,000 | 12 years |
| Huawei LUNA 2000-10Huawei~£575/kWh See more ↓ | 10 kWh | £5,000–£6,500 | 10 years |
| Sigenergy SigenStor 10Sigenergy~£600/kWh5-IN-1 SYSTEM See more ↓ | 10 kWh | £5,000–£7,000 | 15 years |
| Puredrive PureStorage IIPuredrive (UK)~£620/kWh | 10.08 kWh | £5,500–£7,000 | 10 years |
| 🔋🔋🔋 Large Batteries (13–16 kWh) – for bigger homes, EVs, and maximum savings | |||
| Tesla Powerwall 3Tesla~£685/kWhPREMIUM PICK See more ↓ | 13.5 kWh | £8,000–£10,500 | 10 years |
| GivEnergy All-in-One 2GivEnergy (UK)~£481/kWhUK ECOSYSTEM PICK See more ↓ | 13.5 kWh | £5,500–£7,500 | 12 years |
| Fox ESS EP12Fox ESS~£543/kWh See more ↓ | 11.52 kWh | £5,500–£7,000 | 10 years |
| SolaX T-BAT D150SolaX~£467/kWh See more ↓ | 15 kWh | £6,000–£8,000 | 5 years |
| LG Enblock E15LG Energy Solution~£500/kWh See more ↓ | 15.5 kWh | £7,000–£8,500 | 10 years |
*Prices include installation and are approximate as of January 2026. Actual costs vary by installer and configuration.
What Size Battery Do You Need?
Best Overall: Tesla Powerwall 3
The Tesla Powerwall 3 remains the benchmark for home solar battery storage. Offering premium performance, sleek design, and one of the most intuitive apps on the market. While it commands a higher price than its competitors, it delivers on virtually every metric that matters.
The Tesla Powerwall 3 costs:
£8,000 to £10,500 installed.
This includes: the battery unit, built-in hybrid inverter (most competitors require a separate inverter), mounting hardware, wiring, and installation labour.
Key Specifications
| Usable Capacity | 13.5 kWh |
| Continuous Power Output | 11.5 kW |
| Depth of Discharge | 100% |
| Round-Trip Efficiency | 97.5% |
| Operating Temperature | -20°C to +60°C |
| Warranty | 10 years (unlimited cycles) |
| Chemistry | Lithium Iron Phosphate (LFP) |
| Dimensions | 1098 x 609 x 193 mm |
| Installed Cost | £8,000–£10,500 |
| Cost per kWh | ~£685 |
| Weight | 130 kg |
What Makes It Stand Out
The battery is reported by homeowners to fully charge in around 2 hours 42 mins. This means you’ll almost always have a full charge going into the evenings.
If you plan to install a large solar panel array, Tesla has an expansion pack system letting you add more usable capacity at lower costs than by simply adding another Powerwall.
As you’d expect from Tesla, their app is industry leading, with monitoring, weather based optimisations, and full integration with Tesla vehicles. You can download it from your preferred App Store, give it a test run, and explore its features before you buy anything (no logins). Just download and click ‘continue as guest’.
They have one of the most robust warranties in the industry: 80% life remaining after 10 years and unlimited use – one of the best battery lifespan guarantees available.
Considerations
The thing most people don’t like is the price. At £8,000 to £10,000 you’re paying more than most other solar batteries like GivEnergy or Fox ESS.
Some users report the Powerwall 3 operates at around 40 decibels, which is louder than competitors like GivEnergy (under 30 decibels). The batteries are silent, but the inverter makes noise.
Verdict
If you have the budget, want a world class app, the ability to expand, like the design and protection of a larger company, then the Tesla Powerwall 3 is a reassuring choice. If you want similar performance with less of a price tag, check out some of the options below.
Best for Smart Tariffs: GivEnergy All-in-One 2
GivEnergy is, on balance, the best choice solar battery in the UK right now. It has great integration with all the top smart tariffs, which are essential to make solar batteries profitable. It comes with a great inverter, high usable capacity and costs a lot less than the Powerwall 3, around £450 per kWh vs £650 – excellent value for money.
Key Specifications
| Usable Capacity | 13.5 kWh (100% DoD) |
| Continuous Power Output | 6 kW |
| Peak Power Output | 7.2 kW |
| Depth of Discharge | 100% |
| Round-Trip Efficiency | 92–96% |
| Operating Temperature | -10°C to +55°C |
| Warranty | 12 years (unlimited cycles) |
| Chemistry | Lithium Iron Phosphate (LFP) |
| Scalability | Up to 40.5 kWh (1 unit + 2 expansions), 81 kWh parallel |
| Installed Cost | £5,500–£7,500 |
| Cost per kWh | ~£481 |
| Weight | 195 kg |
What Makes It Stand Out
Lower Electricity Bills and Higher Returns: GivEnergy’s killer feature is native integration with Octopus Intelligent Flux and other smart tariffs. These (often) automatic built-in smart controls figure out when to grid charge, when to export and when to use your stored energy. Users report this can save hundreds of pounds extra per year on electricity bills.
Expandable and Upgradable: Like the Tesla, the GivEnergy can be expanded with up to two more expansion batteries. Each system (1 main unit + 2 expansions) can achieve 40.5 kWh, and up to 81 kWh when running two systems in parallel – making it one of the most scalable solar batteries on the market. The inverter can also be upgraded, and you can add a Gateway 2 system to get full home emergency power during blackouts.
Mobile App: The well designed GivEnergy app lets you see real time data, battery stats, smart tariff integration and control of some core settings like charge modes.
The GivEnergy comes with a 12 year warranty with unlimited cycles, which beats the Tesla’s 10 years.
Considerations
The app is well done, but not as robust as the Tesla equivalent. Some users report issues and bugs, but these are usually minor and fixed fairly quickly.
The battery is heavy at 195 kg meaning certain install locations are off limits, like loft space. It’s not a compact unit, so make sure your garage or utility room has enough space.
Customer support receives mixed reviews, and some users experience delays during busy periods.
Verdict
If you plan on using a smart tariff like the Octopus Intelligent Flux, you don’t mind slightly less polish but are fine to balance those issues with a lower price point and better value for money, then this battery should be at the top of your list.
Best Value: Fox ESS Energy Cube Range
The Fox ESS is a value for money battery, running at £2,000 to £3,000 less upfront cost than the Tesla. It has a less robust warranty, defined as 70% remaining at 12 years, but crucially limited by cycle and use time, which can mean your warranty runs out before the 12 years are up. Compare this to the Tesla and GivEnergy, which both offer unlimited cycles within their warranty period.
Key Specifications (EQ2900 Series)
| Capacity Options | 5.76 kWh to 20.2 kWh |
| Depth of Discharge | 90% |
| Round-Trip Efficiency | 95% |
| Operating Temperature | -25°C to +55°C |
| Warranty | 12 years (cycle limited) |
| Chemistry | Lithium Iron Phosphate (LFP) |
| IP Rating | IP65 (indoor/outdoor) |
| Scalability | 1 primary unit + up to 6 expansion packs per stack |
| Installed Cost (5.76 kWh) | £3,500–£4,800 |
| Cost per kWh | ~£720 |
What Makes It Stand Out
Highly Expandable: With Fox ESS you can pair 1 primary battery unit with up to 6 expansion packs per stack, giving up to 20.2 kWh of usable capacity. You can then connect multiple stacks together for even bigger requirements.
Stackable: The modular design is good for larger installs, as the battery is easy to stack (up to 20.2 kWh per stack), and you can connect multiple stacks together for even bigger requirements.
Smart Tariff Integrations: Fox ESS has implemented Octopus Agile and Flux integration through their Fox Cloud 2.0 platform, with Trigger Price Mode and Time Slot Mode for automated smart tariff optimisation. The app provides real-time monitoring and remote control, helping you buy grid electricity at off-peak rates and reduce your bills.
The EP range (EP5, EP11, EP12) offers even higher performance with peak charge/discharge rates up to 11.52 kW, built-in fire suppression technology, and self-heating for cold temperature operation. The Fox ESS EP12 (11.52 kWh) is available from £5,500–£7,000 installed.
Considerations
Fox ESS is a relatively young company (founded 2019), so lacks the long track record of established brands. However, as a subsidiary of Tsingshan Group (a Fortune Global 500 company), it has substantial backing. The battery units are compact and rated for a wide temperature range, but customer support is improving and can be variable.
Verdict
The Fox ESS Energy Cube is one of the best value for money solar batteries if you’re not expecting heavy use, and don’t need the unlimited cycle warranty. It’s a usable battery, with smart tariff integration that should still last 10 to 20 years under normal home use.
Best Modular System: Pylontech Force-H2
Another notable solar battery is the Pylontech Force-H2. This is also considerably less expensive than the Tesla, around £4,000 for hardware only vs £8,500. It’s a modular rack mounted system, with over one million batteries sold.
Key Specifications (Force-H2 / US5000 Series)
| Module Capacity | 4.84 kWh (Force-H2) / 4.8 kWh (US5000) |
| Depth of Discharge | 95% |
| Cycle Life | 6,000+ cycles |
| Warranty | 7 years (extendable to 10) |
| Chemistry | Lithium Iron Phosphate (LFP) |
| Scalability | Up to 16 modules (76.8 kWh) |
| Compatibility | 35+ inverter brands |
| Installed Cost (Force-H2) | £3,000–£4,200 |
| Cost per kWh | ~£744 |
What Makes It Stand Out
Modular: Pylontech’s unique approach to expansion is to use a modular system (a rack you can easily add and remove batteries from). This scalable design lets you connect them together to increase usable capacity from under 10 kWh to over 75 kWh.
Compatibility: Favouring the retrofit market, the Force-H2 works with over 35 inverter brands (including Victron, Solis, Sofar, and Sunsynk).
Price: The Force-H2 is over £4,000 cheaper than the Powerwall 3 for hardware only, making it an attractive value for money option if you just want to store electricity, and don’t care about brand.
Considerations
The warranty structure is usually 7 years from the date of install, which can then be extended by registering on the Pylontech support site, making it 10 years. This can be easy to forget, so if you do buy the H2, complete the paperwork early.
The rack mount format requires its own rack, which can add to installation costs, and change space dynamics when installing.
Verdict
The Pylontech Force-H2 is for those wanting flexibility at rock bottom price points, without unlimited cycle warranties. It’s popular with the off-grid community for these reasons. These reliable storage batteries have a long expected lifespan under normal household use.
Best for Smart Features: Duracell Dura5
A joint venture between Duracell and Puredrive, the Dura5 brings established brand backing into the home solar battery market. Fairly priced with robust features.
Key Specifications
| Capacity | 5.12 kWh |
| Charge/Discharge Speed | Full charge in 1 hour |
| Warranty | 10 years |
| Chemistry | Lithium Iron Phosphate (LFP) |
| Smart Features | Weather-based optimisation, AI energy management |
| Installed Cost | £3,500–£4,500 |
| Cost per kWh | ~£781 |
What Makes It Stand Out
Duracell Energy Smart App: The app uses UK developed algorithms to automatically optimise the battery’s use, making the absolute most out of smart tariffs, and cloudy days. It’s so good, we’re seeing many users install these in their home with no solar panels. This smart use case is to take advantage of cheap grid electricity rates, so electricity can be stored when it’s cheap, and used later when prices would otherwise be expensive.
Rapid Charging: The battery has an extremely quick charge. You can almost fully charge the battery in the shortest off-peak window.
Brand: Backed by a solid brand with a long global history, you’ll feel a bit safer being powered by Duracell.
Considerations
It’s quite a compact battery at 5.12 kWh usable capacity, so you might need more than one. Even so, the price per kWh is still about 50% less than the Tesla.
Verdict
If you’re looking for cutting edge features, from a top brand, that offers good value for money, then the Dura5 should be on your list.
Best for High Capacity: LG Enblock E15
If you’re looking for a large, high capacity solar battery that looks nice, and you can put anywhere in your home, the LG Enblock E15 is a contender.
Key Specifications
| Usable Capacity | 15.5 kWh |
| Charge/Discharge Rate | 6.2–7.7 kW |
| Depth of Discharge | 95% |
| Cycle Life | ~5,000 cycles |
| Warranty | 10 years (70% capacity retention) |
| Chemistry | Lithium NMC |
| Backup Capability | Yes (with compatible inverter) |
| Installed Cost | £7,000–£8,500 |
| Cost per kWh | ~£500 |
What Makes It Stand Out
High Discharge Power and Capacity: The LG E15 can charge and discharge at about 6.2 to 7.7 kW, which means you can use the battery with higher demand items like an EV or heat pump without running out of power, or throttling.
Unique Design: The battery unit is often used inside the home rather than a garage. It’s shaped like a storage cabinet so doesn’t look out of place anywhere.
Expandable: You can start small, then expand later with modular battery packs, that just slide in and out of the unit.
Brand: LG is a dependable, and recognised brand that strives for quality and reliability.
Considerations
LG batteries use NMC chemistry rather than LFP which doesn’t last quite as long (5,000 cycles), giving a shorter overall lifespan, and while still safe, isn’t quite as thermally stable.
Verdict
For high storage capacity, from a well known trusted brand, with a fair price the LG E15 is a solid solar battery option. It pairs well with large solar panel systems where you need high discharge power.
Other Notable Options
EcoFlow PowerOcean
The EcoFlow PowerOcean is one of the best solar batteries for long-term durability, with an industry leading 15 year warranty, and high cycle life of 6,000 cycles. It’s a compact 5.1 kWh unit, similar in size and price to the Dura5, with advanced safety systems (internal fire prevention design), and modular scalability. EcoFlow storage batteries can be expanded up to 15 kWh.
Enphase IQ Battery 5P
Worth considering if you want peace of mind with long term reliability from its 15 year warranty. It comes with intuitive energy monitoring and controls, and it’s often purchased when retrofitting solar panels to an existing Enphase inverter. It just slots right in to the existing solar panel setup, with minimal or no rewiring.
Sigenergy SigenStor 10
Used when you want flexibility and future proofing. Many buyers choose this solar battery system when starting out with a small solar panel array and plan on expanding it later. These storage batteries come with a long 15 year warranty. You can use 5 kWh and 8 kWh battery module expansion packs, to mix and match up to 48 kWh.
Huawei LUNA 2000-10
If you already have a Huawei inverter, these storage batteries integrate well. The 10 kWh battery is priced at £5,000 to £6,500 installed and you can expand the system with an additional 5 to 30 kWh of usable capacity.
AlphaESS SMILE-G3
The SMILE-G3 offers 4.8 kWh at £3,500–£5,000 installed with a 10-year warranty. These storage batteries have an impressive 10,000 cycle life rating, which could give you 40–50% extra lifespan compared to other models with 5,000 to 6,000 cycle lifespans.
SolaX T-BAT D150
The SolaX T-BAT D150 provides 15 kWh of usable capacity at £6,000–£8,000, which is massive. The downside is the (too) short 5 year warranty. If you get this battery, we’d recommend trying to find an installer who will offer an installer guarantee on the whole system, for 10 to 15 years.
Powervault 3
Designed and built in the UK, this solar battery has full smart tariff integration, with expandable options from 4 to 20 kWh. Prices start from £6,000 for the 4 kWh model, and £9,000 for the 8 kWh, installed. If you need faster UK support and maintenance then Powervault are worth talking to.
How to Choose the Best Solar Battery
Match Capacity With Your Needs
If you didn’t use our battery sizing calculator further up this page, you can use these rough estimates below. Getting a full survey by a qualified installer is always the best next step, so they can professionally match the best solar battery to your individual property and needs. A correctly sized battery ensures the best value for money – too small and you won’t store enough electricity, too large and you’ve overspent.
General guidelines by home size:
- 1–2 bedroom flat/house: 3–5 kWh
- 2–3 bedroom house: 5–8 kWh
- 3–4 bedroom house: 8–10 kWh
- 4+ bedroom house: 10–15 kWh+
Consider Smart Tariff Compatibility
This is the big one that makes the difference between a battery losing money, and making profit. In nearly all cases, you’ll need to be on a smart tariff when installing a solar battery, so it’s wise to ensure your battery is compatible. Smart tariffs let you charge from the grid when electricity is cheapest and use the stored electricity when prices peak – this is how most solar batteries pay for themselves. Look for wording like “Octopus Intelligent Flux Ready” as with the GivEnergy 2, Tesla Powerwall 3 and Fox ESS.
Understand Key Specifications
Depth of Discharge (DoD): Think of this as the usable capacity of the battery. Similar to a mobile phone, when it runs out of power and turns off, it’s still not fully out of battery (even though you can’t use it) to keep features like “find my phone” working. Same with a solar battery. 80% means you can use 8 kWh of electricity from a 10 kWh battery. The reserve helps to keep the electrics safe.
Round-Trip Efficiency: This shows you how much electricity is lost during the charging and discharging cycle. If you have a 10 kWh battery with 97% RTE you’ll be able to use 9.7 kWh, compared to 9 kWh if it’s rated 90% RTE.
Cycle Life: Pay attention to this if you want your solar battery to have a long lifespan, and you should. An average solar battery for a UK household uses about 0.5 cycles per day, so 180 cycles per year. However to fully understand how this works, you need to map out degradation as the battery ages. With that accounted for, 6,000 cycles should last 10 to 15 years, and 10,000 cycles should give a lifespan of 14 to 19 years.
Charge/Discharge Rate: If you think of a solar battery like a water tank being filled with water, the charge/discharge rate (measured in peak kW) is like the size of the hose that’s trying to fill it. If the rate is higher, you can charge faster to make the most of cheap electricity (from solar panels, or off-peak grid rates).
Check Warranty Terms
This is critical for maximising the return on your solar battery. GivEnergy and Fox ESS EQ2900 offer 12 years, while EcoFlow, Enphase, and Sigenergy offer exceptional 15 years. Also pay attention if there are cycle overrides, which can end the warranty before the time elapses. Some batteries like the Tesla Powerwall 3 offer unlimited cycles within the allotted time.
Prioritise Safety
Lithium Iron Phosphate (LFP) chemistry is now preferred for residential solar battery installations due to superior thermal stability and temperature tolerance. Most storage batteries are installed in a garage or utility room. Tesla, GivEnergy, Fox ESS, Pylontech, Duracell, EcoFlow, and Enphase all use LFP. Some LG and older batteries use NMC, which is still safe but slightly higher risk. Lead acid batteries are the least safe, and also most expensive over time.
Summary
If you’ve made it this far, you should have a pretty good understanding of the best solar batteries and home battery storage options in the UK. So whether you choose the fancy Tesla Powerwall 3, the rock solid and well priced GivEnergy All-in-One 2 or another suitable model, you’ll be well on your way to lower electricity bills.
You can come back any time to use our free battery sizing calculator above.
If you’re looking to install solar panels also, you can see how much solar panels cost here, and what solar panel grants are available.
The next step, when you’re ready for real world pricing for your exact property, is to request four quotes from trusted, MCS qualified installers. There are plenty of extra savings to be had by shopping around.
