Last checked 16 September 2026 · next check 16 October 2026. Changelog — 16 September 2026: first published; Sigenergy’s Neo page URL has moved to /en/product/sigenstor-neo; four UK stockists and distributors re-checked today, none lists a Neo.
The short answer: we cannot find any evidence that a SigenStor Neo can be bought, warranted or commissioned in the UK today. There is no Neo datasheet on Sigenergy’s site, no Neo model number in the Europe warranty, no Neo at any of the four UK stockists and distributors we checked, no UK price and no UK release date. Everything below is the evidence for that sentence, dated, so you can check it yourself and so we can re-date it when the position changes.
What Sigenergy has said, in date order
- 13 March 2026. The Neo was shown at the opening of Sigenergy’s Nantong Smart Energy Center. The most detailed public account is from PSW Energy, a Perth installer that attended, published on 9 April 2026.
- 24–25 June 2026. Sigenergy’s newsroom, datelined Munich: the company was “globally launching” its home energy ecosystem at Intersolar Europe 2026. The Neo integrates “the inverter, battery, PCS, EMS, and gateway” into one unit, supports “up to six vertically stacked battery modules”, offers “0ms load-side disruption and 200% peakpower output capacity”, carries “8-layer protection”, and is “the industry’s first all-in-one system to integrate both a dedicated Smart Port and a Backup Port”. No country list, no dates, no prices.
- 3 July 2026. A press release from Shanghai: Sigenergy “announced the global rollout of SigenStor Neo” and “SigenStor Neo is available globally”. It names no UK channel, price or date. “Available globally” is a corporate statement, not a stock position — and so far it has been implemented country by country.
- 28 August 2026. A country launch: an event at the Capella Bangkok, with more than 600 attendees, at which Sigenergy “announced official product pricing” for Thailand. The figures were not published. This is what a market launch looks like, and we have found no equivalent for the UK or Europe.
What has not been published
Each item was checked on the date shown.
- No datasheet (16 September 2026). The datasheet fields on Sigenergy’s Neo product page are empty; the only document the page links to is the datasheet for the Sigen CommMod 4G communications module. The original SigenStor, by contrast, has three published datasheets — Energy Controller (version 20260330), Battery, and EV DC Charging Module.
- No warranty (16 September 2026). Sigenergy’s Factory Limited Warranty for SigenStor (For Europe), dated 27 May 2025, lists battery modules BAT 5.0, 6.0, 8.0 and 10.0, Energy Controllers SP 3.0–12.0 and TP 5.0–30.0, the EVDC 12 and 25 modules and the BC — and no Neo. The warranty page on sigenergy.com carries no Neo document.
- No UK stock (counts 14 September 2026, re-checked 16 September 2026). qualityheating.co.uk listed 45 Sigenergy products and powerland.co.uk 72, none containing “Neo”; rapidrenewables.co.uk listed 18 Sigenergy products, all price-on-application, none a Neo; midsummerwholesale.co.uk listed the SigenStor 5-in-One range only. None of the four listed a Neo when re-checked on 16 September.
- No UK price. Nothing on Sigenergy’s page, nothing at any stockist.
- Other UK installers say the same. UK Green Energy Installations, in a 7 September 2026 article of about 1,200 words with no specification figures: “UK-specific models, availability, pricing and applicable grid approvals should be confirmed before specifying a system.”
Why the specifications you see online disagree
There are two public descriptions of the Neo, and they were written at different moments.
The March 2026 description, documented by PSW Energy on 9 April 2026, gives numbers: inverter ranges of 2.5–12 kW single-phase and 3–15 kW three-phase, 6 kWh and 8 kWh modules, a 63 A integrated backup switch, 0.8C charging against the original’s 0.5C, a “cell suspension” thermal design, angled terminals with a temperature sensor at every terminal, and a direct generator input. PSW’s own caveat applies to every one of those: the data is “compiled from launch event coverage based on manufacturer presentations, not independent lab testing or published datasheets”.
The June 2026 description is Sigenergy’s own — the Intersolar newsroom post, repeated by PV Tech on 28 June and the 3 July press release. It gives features, not numbers: five subsystems in one unit, up to six modules, 0 ms and 200% peak, 8-layer protection, a Smart Port and a Backup Port, a built-in pack optimiser for mixing old and new modules, lighter modules with lifting handles and a single side cover for wiring.
For a UK reader the June description governs: it is Sigenergy’s own, it is the European launch, and it is more recent. The March figures fill in the numbers the June material omits, and that is the only reason to use them — always as provisional. Where a later Australian source gives different model steps (5, 6, 8, 10 and 12 kW single-phase; 5, 10 and 15 kW three-phase; up to 48 kWh in a stack), it is another pre-datasheet account, so we show both rather than pick one. And one Australian comparison site lists “Neo modules” of 6.0 and 10.0 kWh — exactly the original’s BAT 6.0 and BAT 10.0 figures — which looks like a mislabel, and we do not repeat it.
What is genuinely new, and what is not
Three of the Neo’s headline numbers are already on the current datasheets for the original SigenStor: “Disruption time of backup switch: 0 ms” (with the Sigen Energy Gateway, under Sigenergy’s stated test conditions), “200% peak output power in off-grid mode”, and a “battery optimizer inside, mix old and new”. Those are not differences.
The differences Sigenergy itself has put in writing are the backup function integrated into the unit rather than a separate Gateway, the Smart Port plus Backup Port, 8-layer rather than 5-layer battery protection, and Sub-1G radio communications. The differences installers care about most — the 0.8C charge rate, the cell-suspension thermal design, per-terminal temperature monitoring and the direct generator input — come only from launch coverage and should be treated as provisional until a datasheet exists.
What the Neo appears to give up is the DC EV charging module. PSW lists DC charging as “to be confirmed”, The Solar Guide in Australia says DC fast charging is “exclusive to the original SigenStor”, and Sigenergy’s own Neo page pairs it with the AC-charging Sigen EVAC instead. The original’s EVDC module is rated at 12.5 or 25 kW on a CCS2 connector. Our Sigenergy SigenStor page carries the full side-by-side table, row by row, with each cell marked as manufacturer-stated, launch coverage or unpublished.
The UK questions nobody overseas can answer
Grid connection. Every grid-tied inverter in Great Britain connects under one of two Energy Networks Association recommendations, decided by the inverter’s AC rating per phase, not by battery size. ENA EREC G98 (Issue 2, 10 March 2025) covers type-tested equipment up to and including 16 A per phase — 3.68 kW single-phase, 11.04 kW three-phase — and is connect-and-notify: the installer informs the network operator no later than 28 days after commissioning. Above that line ENA EREC G99 (Issue 2, 10 March 2025) applies and is apply-first: the application goes to the network operator before installation, and domestic systems use the simplified Form A1-1 where total capacity is under 17 kW single-phase or 50 kW three-phase. Most of the Neo’s reported single-phase range — 5 to 12 kW — sits on the G99 side of that line, exactly as the original’s 4.0–12.0 kW single-phase controllers do. Only the 2.5–3.68 kW sizes on either platform can go in on the notify-after route.
The Smart Export Guarantee. The SEG pays for exported electricity from an eligible generator — solar PV among them — and requires an MCS-certified installation (or an equivalent scheme) and a meter capable of half-hourly export readings. A battery is not itself an eligible technology. GOV.UK says a storage device “could also be used to benefit from the SEG”, but the Energy Saving Trust (updated 20 May 2026) is plain that suppliers “don’t have to pay you for non-renewable electricity exported to the grid”, and some “may only pay the SEG for the electricity your low-carbon system generates itself”. Whether grid-charged energy discharged from a SigenStor of either generation is paid for depends on the supplier’s tariff terms. We do not promise a rate.
What would change this verdict
Any one of four things: a Neo datasheet appearing on sigenergy.com; Neo model numbers appearing in the Europe warranty; a Neo SKU appearing at a UK distributor; or a UK or Europe launch announcement with pricing, as Sigenergy did for Thailand. When one of those happens we will say so here, with the date and the link — and we will still not quote lead times or stock we have not seen.
If you are choosing now
The original SigenStor is buyable in the UK with three published datasheets, a published Europe warranty and stock at UK distributors. The Neo is worth waiting for only if you specifically need whole-home backup without a separate Gateway, the Smart Port for adding storage to an existing third-party inverter, or a direct generator input. If you want DC EV charging, the original is the only SigenStor that offers it.
We can model either against your real consumption once the product exists to design with. For the system we can quote and install today, read the SigenStor Neo UK comparison on our Sigenergy page, or request a free quote and we will size the original honestly — including telling you if a smaller system, or no battery at all, is the better answer.
Sources: Sigenergy, SigenStor Neo product page (read 16 September 2026); Sigenergy newsroom, Intersolar Europe launch, posted 25 June 2026; GlobeNewswire, Sigenergy press releases of 3 July 2026 and 28 August 2026; PSW Energy, SigenStor Neo technical deep dive, 9 April 2026; The Solar Guide (Australia), SigenStor Neo review, 1 June 2026; Sigenergy, Sigen Energy Controller datasheet (version 20260330), Sigen Battery datasheet and Sigen EV DC Charging Module datasheet; Sigenergy, Factory Limited Warranty for SigenStor (For Europe), 27 May 2025; qualityheating.co.uk, powerland.co.uk, rapidrenewables.co.uk and midsummerwholesale.co.uk Sigenergy listings (read 16 September 2026); UK Green Energy Installations, 7 September 2026; ENA EREC G98 Issue 2 and G99 Issue 2 (10 March 2025); Ofgem, Smart Export Guarantee; GOV.UK, Smart Export Guarantee (1 January 2020); Energy Saving Trust, Smart Export Guarantee (updated 20 May 2026).