Lux Power hybrid inverters in the UK

Lux Power, trading as LuxpowerTek, is a Chinese maker of hybrid inverters and batteries sold in the UK through distributors, including Fogstar, which calls itself Lux's official UK distributor. Its inverters are well represented on the Energy Networks Association type-test register, and LuxpowerTek lists a UK support email and phone number. The warranty is the part to read closely: the standard term is 5 years, claims must be made within two weeks of a fault, and the terms published on 24 September 2026 had passed the six-month validity they give themselves. Before you sign, get the exact model code, its register entry and a written warranty from a named company.

A hybrid inverter converts your panels' output for use in the home and also charges and discharges a battery; our hybrid inverter guide explains how it works.

Who supports Lux Power in the UK

The manufacturer is Shenzhen Lux Power Technology Co., Ltd, based in Shenzhen, China. When we checked on 24 September 2026, we found no Companies House record linking a UK company to the manufacturer. What LuxpowerTek does list for the UK is a support channel: supportuk@luxpowertek.com, 020 3725 1733 and a UK service-request form.

In April 2026 Fogstar Ltd (company number 10490056), a battery company registered in Birmingham, announced that it is "the official UK distributor for LuxpowerTek" and that installers can order Lux inverters from it. Fogstar also sells co-branded "Fogstar x LuxpowerTek" inverters designed to work with its own 48 V batteries. In practice, your installer buys the inverter from a UK distributor or wholesaler and fits it.

Under LuxpowerTek's warranty terms, your first route for a claim is the distributor or installer you bought from. Only if you can't get help there do you go to Lux directly, at warranty@luxpowertek.com. Ask your installer to write down which company will handle a warranty claim.

Which Lux inverter is on your quote

For UK homes the relevant Lux models are the single-phase hybrids: the older LXP, the GEN and GEN2, and the newer GEN3 (3–8 kW) and GEN PRO (8–14 kW). The LXP 3600 ACS is AC-coupled, the type usually used to add a battery to an existing solar system. The TriP and TriP2 ranges are three-phase.

The model decides your grid paperwork. In Great Britain, on a single-phase supply, G98 covers up to 16 A per phase, which is 3.68 kW (16 A × 230 V = 3,680 W): the installer connects, then notifies the network operator within 28 days. Anything larger needs G99 approval from the network operator before connection, which can add weeks. Here is what the ENA register showed for Lux's smaller single-phase models on 24 September 2026:

Every Lux record we read was marked "Compliant". The row to notice is the GEN3 3.6 kW. Its register entry lists G99 Type A but not G98, and the GEN3 datasheet we checked (dated 29 May 2026) names G99 and G100 among its certifications but not G98. Unless your installer shows you a G98 entry for that exact model, plan for a G99 application. If a quick G98 connection matters to you, ask whether a model listed under G98, such as the GEN3 3K or the GEN2 3.6K, would suit your roof and battery instead. Our G98 and G99 guide explains the process.

The warranty: what the terms say

LuxpowerTek publishes one set of warranty terms for all countries. The version on its website on 24 September 2026 was dated 9 February 2026 and says it is valid for six months and may be updated every six months, so by its own wording that document was out of date when we checked. It doesn't say what that means for warranties already issued, so ask for the current version in writing. That version says:

The start-date rule can cost you time. If a unit was delivered from the manufacturer in February and not installed until August, its warranty would have started in June, four months after delivery. So ask for the manufacture or delivery date as well as the serial number.

There are two ways to get longer cover. LuxpowerTek's warranty page offers 1 to 5 extra years at no extra charge if you pair the inverter with a Luxpower battery, for installations from 23 April 2024. Its separate extended-warranty terms, dated June 2025 and also past their stated six-month validity, describe extensions to 7 years at no charge with a Luxpower or HINAESS battery, or to 10 years for a fee, registered by email with photos and the invoice. They require installation within 30 days of purchase, and the extension is limited to the original buyer and can't be transferred. For systems that qualify for the extension, those terms say labour is covered during the standard period but not the extended years, which contradicts the standard terms' "materials only" wording. Fogstar's listing for its co-branded GEN3 advertises an "industry-leading 10-year warranty". Get in writing whose warranty that is, what it needs (for example a Fogstar battery) and whether labour is included.

Backup in a power cut

Lux's hybrids have a backup (the datasheets say "UPS") output. For the GEN3, the datasheet gives a switching time of 7 milliseconds and a backup rating equal to the inverter's rated power, for example 3.6 kW on the 3.6 kW model. Only circuits wired to that output stay on, and only while the battery has charge or the panels are producing. Our guide to solar panels in a power cut explains the wiring.

Should you shortlist Lux Power?

Lux Power is worth shortlisting if your installer is used to it, buys it from a UK distributor, and pairs it with a battery that is on Lux's compatibility list, ideally one that unlocks the longer warranty. The register coverage is broad, and a UK support channel exists.

It fits less well if you want your warranty from a UK company with a fixed, current document. Lux's published terms were past their own validity date when we checked, the claim window is short, and the standard terms limit what is paid. If you choose Lux, the written warranty from your installer or distributor matters more than the brand; put the warranty terms beside everything else when you compare solar quotes. Our battery storage guide helps you size the battery.

Before you accept a Lux Power quote

• The full model code (for example GEN3-LB-EU 3.6K), not just "Lux 3.6 kW".
• Its ENA register entry, and whether your connection is G98 or G99.
• The battery model, and confirmation that it is on Lux's compatibility list.
• The warranty length in writing, the company that gives it, and whether labour is covered.
• That the unit was supplied for the UK market, with its delivery or manufacture date.
• Which circuits are wired to the backup output.

Protecting yourself beyond Lux's warranty

Because Lux's own warranty is limited and run from abroad, your strongest protection is usually your contract with the installer. Whatever Lux's terms say, the Consumer Rights Act holds the installer to supplying an inverter of satisfactory quality and fitting it with reasonable care and skill. Paying by credit card adds a second route: under Section 75 of the Consumer Credit Act, the card issuer can share liability with the installer for any single item on the invoice priced over £100 and up to £30,000. An installer in the RECC consumer code also has to cap your deposit at 25% and guarantee its workmanship, with insurance behind it, for no less than two years. Check membership on RECC's own register, because MCS certification doesn't require it.

If you want to be paid for export in Great Britain, pick a supplier's SEG tariff: each supplier sets its own, and for a system up to 50 kW it will ask to see an MCS certificate (or equivalent). VAT works the same across the UK: when your installer supplies and fits the inverter in your home as part of a solar or battery system, no VAT is charged until 31 March 2027; from 1 April 2027 the rate is set to go to 5%, unless the relief is extended. An inverter bought without installation carries 20%.

Frequently asked questions

Are Lux Power and LuxpowerTek the same company?

Yes. LuxpowerTek is the brand name; the warranty terms name the company as Shenzhen Lux Power Technology Co., Ltd, and the register lists it as LUXPOWER TECHNOLOGY CO., LTD.

Who do I contact if my Lux inverter fails?

Your installer first, then the distributor they bought from. LuxpowerTek's UK support is supportuk@luxpowertek.com or 020 3725 1733. Report the fault within two weeks and have the invoice, serial number, installation date and any error codes ready.

Is the Lux GEN3 3.6 kW a G98 inverter?

Not according to the ENA register on 24 September 2026, which listed the GEN3-LB-EU 3.6K under G99 Type A only. The GEN3 3K was listed under G98. Ask your installer which connection they will apply for.

Can I use a Fogstar battery with a Lux inverter?

Fogstar says its batteries are integrated with LuxpowerTek inverters, and its co-branded GEN3 is designed for Fogstar's 48 V batteries. Lux's terms exclude lithium batteries that aren't on Lux's compatibility list, so get the pairing confirmed in writing.