LG Energy Solution (LG Chem) Review UK (2026)
Quick Answer
Global battery giant but withdrew from UK residential in 2022 — existing systems still supported, no new sales.
Data verified April 2026. UK installed pricing varies with installer, site and package.
At a Glance
| Origin | South Korea (LG Energy Solution, formerly LG Chem) — one of world's largest battery manufacturers |
| UK support | Limited — LG withdrew from UK residential in 2022; service only for existing installations |
| Capacity / sizing | RESU Prime: 10 kWh or 16 kWh (no longer sold in UK) |
| Chemistry | NMC (older models); LFP (RESU Prime) |
| Peak power | 5 kW (RESU Prime 10H) |
| Warranty | 10 years / 60–70% end-of-life (varies by model) |
| Cycles | 6,000 |
| Indicative UK price | Second-hand £2,000–£5,000 — new units unavailable in UK |
Tariff Compatibility
LG Energy Solution (LG Chem) works with the following UK export tariffs (see our best Octopus tariffs for solar guide):
- Octopus Flux (with compatible inverter)
- Outgoing Fixed
Strengths
- Large global install base and long track record
- RESU Prime uses LFP chemistry — safer and longer-lived than older NMC RESU 10
- Compatible with SolarEdge and other major hybrid inverters
Weaknesses
- LG withdrew from UK residential solar battery market in 2022 — no new supply
- Historic 2021 recall on some RESU models (10H, RESU10, RESU13) due to fire risk — check recall status on any second-hand unit
- Limited UK installer support for new installations
- Resale value has declined as UK market shifts to locally supported brands
Who LG Energy Solution (LG Chem) Suits Best
Existing LG RESU owners looking for continuation service, or budget buyers considering a second-hand LG unit — with caveats.
When to Avoid
You're buying new. LG Chem is not a current UK residential option. Choose GivEnergy, Tesla, FoxESS, or Sonnen instead.
Popular Models
- RESU Prime 10H / 16H (LFP, discontinued in UK)
- RESU 10H / 13 (NMC, recalled)
Frequently Asked Questions
Can I still buy an LG Chem battery in the UK?
No — LG withdrew from the UK residential battery market in 2022. Existing installations are still supported for warranty purposes, but no new units are sold through MCS-certified installers.
Are LG Chem batteries safe?
The current RESU Prime (LFP) range is safe and widely deployed. However, earlier RESU 10H, RESU10, and RESU13 models (NMC chemistry) were subject to a 2021 global recall over fire risk. If you're considering a second-hand LG unit, check recall status via the LG Energy Solution recall portal.
What's the best LG Chem alternative in the UK?
GivEnergy is the closest direct alternative — similar price band, better UK support, and strong Octopus integration. For premium buyers, Tesla Powerwall or Sonnen offer more warranty and brand longevity.
Is my existing LG RESU still covered by warranty?
Yes. LG Energy Solution continues to honour warranties on existing UK installations. Contact the original MCS-certified installer or LG UK directly for service requests.
Compare with Other Battery Brands
| Brand | UK support | Warranty | Indicative price | |
|---|---|---|---|---|
| FoxESS | Extensive | 10 years / 70% end-of-life capacity | £3,500–£9,500 installed depending on capacity | View → |
| Pylontech | Moderate | 10 years / 80% end-of-life (Force-H); 7 years (US-series) | £3,000–£11,000 depending on stack size and inverter pairing | View → |
| Sunsynk | Strong | 10 years | £2,800–£8,500 installed | View → |
| Alpha ESS | Moderate | 10 years / 70% end-of-life | £5,000–£12,000 installed for integrated battery + hybrid inverter | View → |
| Sonnen | Strong | 10 years or 10,000 cycles (whichever comes first) — one of the longest in the UK market | £8,000–£16,000 installed — premium tier | View → |
| SolaX Power | Strong | 10 years / 60% end-of-life capacity | £3,800–£10,500 installed | View → |
| Powervault | Strong | 10 years / 70% end-of-life capacity | £4,500–£11,000 installed | View → |
Get a Quote Including LG Energy Solution (LG Chem)
Most MCS-certified installers carry multiple battery brands — ask for a quote specifying LG Energy Solution (LG Chem) if you want a battery system. Use the form below to reach local installers.
Sources
John Rooney is the founder of Solar Info and has been covering the UK solar energy market since 2023. He fact-checks all content against official MCS and Ofgem data and maintains relationships with MCS-certified installers across the UK.