The Tesla Powerwall is the best-known home battery, but it isn't always the right pick: lead times can be long, the system is sold as a complete unit, and alternatives can offer better value or more flexibility. Here are the main UK alternatives, compared side by side.
Powerwall alternatives at a glance
Use the table below to compare capacity, warranty and indicative UK installed pricing for the most popular Powerwall alternatives. The Powerwall 3 row is included as a baseline.
| Brand / model | Usable capacity | Warranty | Est. UK installed price | Standout feature |
|---|---|---|---|---|
| Tesla Powerwall 3 | 13.5 kWh | 10 years | £9,000–£11,000 | AC-coupled, integrated inverter |
| GivEnergy | 2.6–13.5 kWh (stackable) | 10 years | £4,000–£8,500 | Strong app, hybrid inverter |
| Sunsynk | 5–16 kWh (stackable) | 10 years | £4,500–£9,000 | Backup / off-grid capable |
| Fox ESS | 5–16 kWh (HV stackable) | 10 years | £3,500–£8,000 | Competitive £/kWh |
| Solax Triple Power | 5–15 kWh | 10 years | £3,800–£8,200 | Single & three-phase |
Prices are indicative installed ranges (battery + inverter + standard labour) gathered from UK installer quotes in 2026 and exclude any available grants. Final costs vary with property, system size and installer.
GivEnergy
UK-designed hybrid inverters and batteries from 2.6 kWh to 13.5 kWh, with stackable options for larger homes. Popular with installers for the strong app, straightforward commissioning and tight integration with UK tariffs and agile pricing. A GivEnergy system is often the closest "like-for-like" alternative to a Powerwall for solar households who want a polished app experience.
Sunsynk
Versatile hybrid inverters often paired with stackable lithium batteries. A good fit for homeowners who want backup or off-grid capability, as Sunsynk inverters handle load-shedding and EPS cleanly. Three-phase options make Sunsynk a strong choice for larger properties.
Fox ESS
Hybrid and AC-coupled inverters with stackable HV battery modules — typically the most competitive option on £/kWh for larger systems. Fox ESS is widely stocked in the UK, so lead times are short and parts are easy to source.
Solax
A wide range of single- and three-phase hybrid inverters paired with the Triple Power battery line. Common on UK solar-plus-battery installs, with EPS support on selected models for backup power.
How to choose the right Powerwall alternative
- Capacity: match the battery to your daily solar surplus and overnight usage. A typical UK home benefits from 5–10 kWh; larger or all-electric homes may want 10–15 kWh or more.
- Inverter compatibility: hybrid inverters (GivEnergy, Sunsynk, Fox ESS, Solax) combine solar and battery in one box — simpler and cheaper if you're adding solar at the same time. AC-coupled batteries (like the Powerwall) suit homes with existing solar.
- Backup power: if you want the lights on during a cut, check EPS or whole-home backup support. Sunsynk and GivEnergy are strongest here.
- Warranty: all the brands above offer 10-year warranties. Read the small print — some guarantee a minimum retained capacity (e.g. 70% after 10 years) rather than just hardware replacement.
- Price per kWh: divide the installed price by usable capacity to compare value. Fox ESS and Solax usually win on raw £/kWh; GivEnergy and Sunsynk add value through app and backup features.
All of these can match or exceed the Powerwall on key specs, but the right fit depends on your inverter compatibility, capacity needs and installer experience. Compare quotes to see what different installers recommend for your home.
See also: Battery Storage Costs UK and Is Battery Storage Worth It?.