For your home · Sigenergy SigenStor

Sigenergy SigenStor installer for Birmingham and the West Midlands.

We supply, install and commission Sigenergy SigenStor systems. It is the system our engineers recommend most for a new solar-and-battery install: a hybrid inverter, stackable battery modules, backup and an optional EV charger in one unit, sized to the house and expandable later.

5 / 8
kWh battery modules
10 yr
product warranty
Get a SigenStor quote Call 0121 661 6400

MCS-certified for battery storage and solar PV (NIC-600049) · We install across Birmingham, the Black Country, Worcestershire and Staffordshire from our base in Oldbury, and regularly travel 30 to 40 miles, Telford, Coventry, Shrewsbury and Stafford included. If you are on the edge of that, just ask.

SigenStor in short

  • What it is: a five-in-one home energy system: solar inverter, battery, EV DC charging module, energy management and backup, run from the mySigen app.
  • Battery: 5 kWh or 8 kWh modules, one to six per stack, up to 30 or 48 kWh per stack, ten stacks in parallel.
  • Inverter: 3 to 12 kW single-phase or 5 to 30 kW three-phase.
  • Backup: 0 ms switchover; IP66 enclosure; 10-year product warranty.
  • Who installs it: Green Tech Hub supplies, installs and commissions it across Birmingham, the Black Country, Worcestershire and Staffordshire.
  • Price: fixed, by system size; 0% VAT on home battery installation to 31 March 2027.

Why our engineers rate it

Modular, so the system fits the house.

Most battery decisions go wrong at sizing: too small and the evening runs out, too big and the panels never fill it. SigenStor's stackable modules let us fit exactly what your usage needs now, two 5 kWh modules for a typical semi, three 8 kWh for a home with an EV, and add a module later if a heat pump or a second car arrives. Nothing is thrown away to upgrade.

The second reason is that it is one unit. The inverter, the battery, the backup switching and the optional EV DC charging module share a single enclosure and a single app, which means fewer boxes on the wall, fewer points of failure and one warranty conversation if anything ever needs attention.

We are honest about who it is not for. If you have a small roof and modest evening use, a single 5 kWh unit from another brand may be the better-value answer, and we will say so.

Specification, with sources

  • SigenStor battery modules are available in 5 kWh and 8 kWh sizes; a stack takes one to six modules, up to 30 kWh or 48 kWh depending on the module, and up to ten stacks can run in parallel. Source: www.senergydirect.co.uk/product/sigenergy-sigenstor-battery/
  • The battery uses 280 Ah cells in a five-layer stackable design with 0 ms switchover to backup (manufacturer datasheet, SigenStor Home). Source: www.senergydirect.co.uk/wp-content/uploads/2024/06/Datasheet-SigenStor-Home-1.pdf
  • Ingress protection is IP66 and the product warranty is 10 years. Source: www.senergydirect.co.uk/product/sigenergy-sigenstor-battery/
  • The system is a five-in-one: solar inverter, battery, EV DC charging, energy management and backup, controlled through the mySigen app. Source: www.senergydirect.co.uk/product/sigenergy-sigenstor-battery/
  • Single-phase inverter output runs from 3 kW to 12 kW and three-phase from 5 kW to 30 kW (UK distributor specification; confirm the exact model on your quote). Source: www.wiredbyjessops.co.uk/sigenergy-sigenstor-specs-storage-capacity-dimensions/

Sigenergy's own product pages block automated reading, so distributor datasheets are cited; the exact model, module count and warranty document are on your quote.

How a SigenStor install goes

Survey, G99, install, commission, aftercare.

1

Survey and model

An engineer surveys the roof, the consumer unit and where the unit will go, and models generation and evening use from your smart-meter data.

2

Design and fixed price

Module count, inverter size and backup circuits specified; one fixed price with the datasheet attached.

3

G99 application

A 5 or 6 kW inverter is above the 3.68 kW G98 limit, so we apply to your network operator before work starts and manage the timeline.

4

Install to PAS 63100

Battery installed to the domestic fire-safety specification BS 7671 A4:2026 requires, by NICEIC-registered engineers, usually in a day.

5

Commission and aftercare

Backup circuits, tariff settings and the mySigen app set up with you; warranty registered; we remain the people you call.

Regulatory facts on this page: A G98 connection covers up to 16 A, which is 3.68 kW, per phase and is notified to the network operator after installation; anything larger needs a G99 application before work starts. BS 7671:2018+A4:2026 (published 15 April 2026) adds Chapter 57 for battery installations and requires batteries in dwellings to be installed to PAS 63100:2024, the BSI fire-safety specification for domestic battery storage.

For your home

Where we install SigenStor

Where we install: homes across the Black Country, Worcestershire homes, solar panels in Staffordshire, and solar panels in Telford, Coventry home solar, solar panels in Worcester and Shrewsbury home solar.

Homeowners, in their own words

5.0 on Google from 44 reviews

  • ★★★★★
    “Solar panels and battery does as it says on the tin. Harj looked after us from start to finish and was always on hand to explain or help us with anything with the product, even a year later. Panels and the equipment look good. I would recommend this company.”
    Ken Tamorama · Google
  • ★★★★★
    “I had solar panels installed with Green Tech Hub, and they were highly professional throughout the process. Their operative was always contactable. I'd highly recommend them for solar panel installation.”
    Andrew · Google
  • ★★★★★
    “Very impressed with the director's knowledge. No high pressure sales pitch, just a clear explanation of the best system for us. The fitting was arranged quickly and the engineers were very efficient and tidy.”
    Michael Foster · Google

Read all 44 reviews, every one verbatim.

Sigenergy questions, answered straight

Are you a certified Sigenergy installer?

We supply, install and commission Sigenergy SigenStor systems and we are MCS-certified for battery storage and solar PV (NIC-600049) through NICEIC, which is the certification that matters for your export tariff and your insurer. Sigenergy does not publish a separate UK installer list, so if a specific Sigenergy programme status matters to you, ask us and we will tell you exactly where we stand rather than put a badge on a web page.

How big can a SigenStor system go?

Battery modules come in 5 kWh and 8 kWh; a stack takes one to six modules, up to 30 kWh or 48 kWh depending on the module, and up to ten stacks can run in parallel, so the ceiling is far beyond any house. For a typical home we fit one stack of two or three modules, 10 to 24 kWh, and the modular design means you can add a module later without replacing anything.

Does SigenStor give me backup in a power cut?

Yes. Backup is built into the five-in-one unit with a 0 ms switchover, so the lights do not flicker. How long it lasts depends on the stored energy and what you run; we set up which circuits are backed up during commissioning.

Can it charge my electric car?

SigenStor has an optional EV DC charger module that charges the car directly from the battery and panels on DC, rather than through a separate AC wallbox. Whether that beats a conventional 7 kW charger depends on your car and how you drive; we will say which suits you.

What is the warranty?

The product warranty is 10 years. The terms are on the datasheet and your quote, and Green Tech Hub registers and supports the warranty as the installer; aftercare is a large part of what we do.

Which inverter size do I need, and does it need a G99?

Single-phase SigenStor inverters run from 3 kW to 12 kW and three-phase from 5 kW to 30 kW. Anything above 3.68 kW per phase needs a G99 application to your network operator before installation, which we submit; up to 3.68 kW is a G98 notification afterwards. Most homes end up on a 5 or 6 kW single-phase unit, so expect a G99.

See all our FAQs

Get a fixed price for a SigenStor system

Tell us the postcode, whether you already have panels and roughly what the house uses in the evening. We will come back with a module count, an inverter size and a fixed price.

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