LONGi shipped 67 GW of solar modules last year, more than the entire installed solar capacity of the UK. That single fact explains why their decision to enter the UK battery storage market matters, even if their first products are aimed at warehouses and factories rather than homes.
As reported by Solar Power Portal, LONGi is launching integrated commercial and industrial (C&I) battery platforms in the UK. The company already dominates solar manufacturing; now it wants to own the storage chain too.
Why this matters to your electricity bill
Every battery installed in a commercial building reduces strain on the grid during peak hours. That means lower wholesale prices for everyone. Ofgem data shows that peak-time electricity can cost 30p/kWh more than off-peak. When large sites store solar power and discharge it at 5pm, the price pressure eases, and households on time-of-use tariffs benefit directly.
But the bigger effect is on hardware costs. When a manufacturer the size of LONGi enters any market, they bring scale. A typical home battery system (5 kWh to 10 kWh) costs between £3,000 and £5,000 installed today. If LONGi follows its solar playbook, undercut rivals by 15–20%, that figure could drop to £2,500 within two years. The Energy Saving Trust estimates a 5 kWh battery paired with solar panels can cut a household’s grid electricity use by 40–60%, saving a typical 3-bed semi around £300–£400 annually.
Who qualifies, and who doesn’t
LONGi’s first UK products are C&I platforms, not residential. That is typical: manufacturers test commercial margins before launching domestic versions. The company has not announced a home battery timeline, but its history suggests 12–18 months. When it arrives, the key question will be compatibility. LONGi solar panels already work with most inverters; a LONGi-branded battery that integrates smoothly with its own panels would be the logical next step.
For now, homeowners looking at storage have three options: Tesla Powerwall (around £7,000), GivEnergy (around £4,500), or smaller brands like FoxESS. The catch is that most grants, including the Boiler Upgrade Scheme, do not cover batteries unless paired with a heat pump. The Smart Export Guarantee pays for exported solar but not stored power. Households pay for storage entirely out of pocket, which is why falling prices matter so much.
What it costs a typical 3-bed semi
The numbers assume a typical semi-detached home using 12,000 kWh annually, with a 4 kW solar array and a 5 kWh battery. Installation costs vary by region; London averages 12% higher than the North West. A battery alone, without solar, saves less, around £150–£200 a year, because it relies on cheap overnight grid charging rather than free solar generation.
Yet the EPC impact is substantial. A D-rated home with solar and storage can jump to a C rating, adding an estimated 5–8% to resale value according to estate agent data. That is roughly £12,000–£20,000 on a £250,000 property, far more than the battery cost itself.
But here is the catch
LONGi’s entry comes at a moment of policy uncertainty. The government’s 2030 clean power target requires 40 GW of battery storage, up from around 4 GW today. But planning delays for grid connections and battery installations are running 12–18 months in some regions. A manufacturer can build a factory faster than the UK can connect it to the network.
What this misses is the domestic storage gap. Most of the 40 GW target is utility-scale, giant shipping-container batteries in fields. Home storage is barely mentioned in government strategy documents. If LONGi shifts its focus to residential, it will need clearer incentives: perhaps a zero-VAT extension on batteries, or a storage-specific grant. Neither is on the table today.
What to do, and by when
Households planning solar-plus-storage should wait until mid-2025 if they can. That is when LONGi’s residential battery is likely to launch, and price competition from other manufacturers will peak. Those who need a battery now, for backup power or time-of-use tariff savings, should compare quotes from at least three MCS-certified installers. The Microgeneration Certification Scheme website lists approved companies in every postcode.
Check your EPC rating first. If it is D or below, solar and storage will deliver the biggest jump. If it is already C, a heat pump might offer better returns. Either way, the LONGi announcement is a signal: battery prices are falling, and the window for early adopters is closing.
Frequently Asked Questions
LONGi has not released specifications for a UK home battery yet. Its commercial platforms use standard communication protocols, so a future residential model is likely to be compatible with most inverters. But until the product launches, compatibility remains unconfirmed.
Yes, but savings are lower. A 5 kWh battery charged on a cheap overnight tariff (around 7p/kWh) and used during peak times (around 30p/kWh) saves roughly £150–£200 a year for a typical household. Payback takes 15–20 years at current battery prices, compared to 8–12 years with solar panels.
