SigenStor Neo Explained: Sigenergy’s New All-in-One Battery (and the SP2 Inverter)

Short answer: the SigenStor Neo is Sigenergy’s new all-in-one home battery, unveiled at Intersolar Europe in June 2026. Compared with the original SigenStor it builds whole-home backup into the controller (no separate gateway for most single-phase homes), charges faster, and adds a “Smart Port” for heat pumps, generators and other inverters. The catch: as of autumn 2026 it is only just reaching European distributors, and some details, like DC EV charging, are still unconfirmed.

We are also covering the Sigen Hybrid SP2, a slim new single-phase hybrid inverter that a lot of people are asking us about. They are different products, and it is worth knowing which is which before you get a quote.

What is the SigenStor Neo?

Sigenergy launched the Neo at Intersolar Europe 2026 in Munich, alongside a wider home energy line-up, according to the launch press release on pv magazine. Like the original SigenStor, it combines the inverter, battery, power conversion system, energy management system and gateway in one stack.

UK distributor Triple Solar describes Neo as “its own platform” rather than a drop-in replacement, so do not assume Neo and original SigenStor parts are interchangeable.

SigenStor Neo specifications

These figures come from Sigenergy’s official Neo specification page. Triple Solar notes that early datasheets are preliminary, so treat them as subject to change.

Spec	Single-phase	Three-phase
Nominal output (on-grid and backup)	2.5–12 kW	3–15 kW
Peak output (10 seconds)	5–20 kVA	6–30 kVA
Solar inputs (MPPTs)	4	3
MPPT voltage range	40–565 V	120–1,000 V
Max input current per MPPT	22 A	22 A
Max efficiency	97.8–97.9%	98.9–99.0%
Grid-to-load passthrough	63 A	Not listed
Battery modules per controller	1–6	1–6
Cooling / rating	Natural convection, IP66	Natural convection, IP66

Battery modules

Sigenergy’s spec page lists two Neo battery modules, both LiFePO4, with total energy of 6.02 kWh and 7.52 kWh. You will see them sold as “6 kWh” and “8 kWh” modules by some retailers, but the official figures are the ones above. Six of the larger modules gives you just over 45 kWh in a single stack.

Other details worth knowing:

• Each pack has its own optimiser, connected in parallel, so old and new modules can be mixed (Triple Solar)
• Charge rate is 0.8C, up from 0.5C on the original platform, according to PSW Energy’s technical deep dive
• Modules weigh around 55 kg and 65 kg, so installation is a two-person job
• They can be floor-standing or wall-mounted

What is new compared with the original SigenStor?

PSW Energy’s comparison, based on manufacturer launch presentations, sums up the differences well:

Feature	Original SigenStor	SigenStor Neo
Whole-home backup	Separate Sigen Gateway	Integrated 63 A backup switch
Battery charge rate	0.5C	0.8C
Backup overload	150% peak off-grid	200% for 10 seconds
Single-phase range	3–12 kW	2.5–12 kW
Three-phase range	5–30 kW	3–15 kW
Generator connection	Via gateway	Direct to controller
DC EV charging	12.5 or 25 kW module	To be confirmed
Smaller module option	5 kWh available	Not offered

For an Irish single-phase home the integrated backup is the big one. On the original SigenStor, whole-home backup needs a separate gateway, which adds cost and wall space. Neo builds that in.

The Smart Port and Backup Port

Neo has two extra connection points. The Smart Port can take a third-party inverter (handy if you already have solar), an external generator, or a smart load like a heat pump or EV charger. The Backup Port extends supply during a blackout. Sigenergy claims it is the first all-in-one system with both. For rural homes and farms with a generator, the direct generator connection is genuinely useful.

Warranty and app

Sigenergy had not published a formal Neo warranty document when HCE reviewed it in September 2026. PSW Energy reports a 10-year product warranty on the battery and energy controller. We would expect terms similar to the original SigenStor, but ask for the actual document before you sign.

Neo works with the mySigen app 4.0, which adds SigenAgent, an AI assistant that can work towards goals such as lower bills or more backup reserve.

Neo and the wider Sigen home ecosystem

The launch also included:

• Sigen EVAC G2: an EV charger with V2X support
• SigenFlux: an air-to-water heat pump that works with your solar and battery
• SigenMicro: a microinverter for awkward roofs
• SigenMate: a plug-and-play battery for apartments and balconies

We have not seen Irish pricing or availability for these yet.

What about the Sigen Hybrid SP2?

The SP2 is Sigenergy’s second-generation single-phase hybrid inverter, sold in sizes from 2 to 6 kW (for example 3.6 SP2 and 4.6 SP2). It is not part of the Neo platform. Instead it pairs with the original SigenStor battery range through a separate battery controller.

Key points from a UK retailer’s SP2 3.68 kW listing and Krannich’s SP2 listing:

• Slim, fanless die-cast body, 99 mm deep, rated at 25 dB
• Two MPPTs, 600 V max DC input, IP66
• European efficiency of around 97.5–98%
• Runs solar-only on day one, then adds batteries later via the SigenStor battery controller and BAT modules (one to six per controller)
• Backup needs the Sigen Energy Gateway

In plain terms, the SP2 suits smaller single-phase homes that want solar now and a battery later. Neo suits homes that want a bigger, all-in-one battery with backup built in. Note that some European distributors do not list the SP2 for sale in Ireland, so check availability with your installer.

Pros and cons of SigenStor Neo

Pros

• Whole-home backup built in for most single-phase homes
• Faster 0.8C charging
• Four MPPTs on single-phase models, great for complex roofs
• Smart Port for generators, heat pumps and existing inverters
• Quiet, fanless, IP66

Cons

• New platform with no long-term field data
• Formal warranty document not yet published at time of writing
• DC EV charging not confirmed
• Three-phase tops out at 15 kW, lower than the original
• No smaller 5 kWh module

Is SigenStor Neo available in Ireland?

Not widely yet. HCE reported on 16 September 2026 that Neo was “not yet in the UK supply chain”, and we have no confirmed Irish launch date or price. If you are planning an install in the coming months, we can quote both the original SigenStor and Neo and tell you honestly which makes sense. Remember the SEAI solar grant now includes a €600 battery grant; see our SEAI grants page for details.

FAQ

Should I wait for SigenStor Neo?

If you need whole-home backup on a single-phase home, Neo is worth waiting for. If you want DC EV charging, a three-phase system above 15 kW, or an install in the next few weeks, the original SigenStor is the proven option.

Can I mix Neo and original SigenStor batteries?

Distributors describe Neo as a separate platform, so plan on staying within one platform.

Is the SP2 the same as Neo?

No. The SP2 is a slim 2–6 kW single-phase hybrid inverter that works with the original SigenStor batteries. Neo is a full all-in-one stack.

How big a Neo battery do I need?

We size it on your actual usage, tariff and any plans for an EV or heat pump.

Talk to us about Sigenergy

We install Sigenergy, Tesla Powerwall, Solis, GoodWe and SAJ, and we will give you a straight answer on which suits your home. Book a free survey and we will keep you posted as Neo lands in Ireland. Read our full residential solar PV page too.

Related: start with our full Sigenergy SigenStor review, or compare Sigenergy vs Tesla.

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