Most home energy systems are a collection of boxes from different makers, wired together on site. SigenStor puts the lot in one modular tower, which is why it installs faster, loses less energy between components and has one app and one warranty.
The Energy Controller at the top of the stack is a hybrid inverter with up to four MPPT trackers, so an east roof, a west roof and a garage roof can each be tracked on their own. Single phase from 3 kW to 12 kW, three phase available.
Lithium iron phosphate modules of 6 kWh or 9 kWh that stack under the controller, six deep, to 54 kWh. Two modules wall mount; more stand on the floor. DC coupled, so solar goes into the cells without an extra conversion.
An optional DC charging module in the same stack, 12.5 kW or 25 kW, charging the car straight from the roof or the battery. Vehicle to home and vehicle to grid on cars that support it, which is rare in a home system.
With the Sigen Gateway the house switches to the battery in a power cut with no interruption at all, and there is a generator input for the rural case. Without the gateway it works as a normal grid tied system.
The AI in the mySigen app learns how the house uses power, watches the weather forecast and your tariff, and decides when to charge, hold and discharge. It supports time of use tariffs such as Octopus Agile out of the box.
Modules click together on a rail with no cabling between them. On a typical house the stack is on the wall in a morning, and adding a module later is a short visit rather than a rebuild.
The things that decide whether a battery is still doing its job in year twelve.
Lithium iron phosphate throughout, the chemistry with the best thermal stability in home storage, with cell level monitoring and multi layer electrical protection in each module. Modules are IP66, so dust and driven rain do not reach the electronics, and they are rated to run from minus 20 to plus 60 degrees.
SigEnergy was founded in 2022 by Tony Xu, who ran Huawei’s solar inverter business for a decade and took it to the largest in the world. The company listed on the Hong Kong Stock Exchange in April 2026 and was the largest battery brand in Australia by installed capacity in 2025. Around seven in ten of its staff work in research and development.
Figures from SigEnergy’s published specifications and UK distributor datasheets, September 2026. Specifications change; we confirm the exact models on your quote.
A 5 kW or 8 kW controller with one or two 9 kWh modules on the wall covers most evenings for a family home, and takes the solar straight in.
Add the DC charging module to the stack and charge at up to 25 kW from the roof and the battery, faster than any home AC charger, with vehicle to home on supported cars.
Add modules, six deep, to 54 kWh, without touching the inverter. Winter running on a cheap overnight window becomes the normal pattern.
| Battery modules | 6 kWh (5.84 kWh usable) and 9 kWh (8.76 kWh usable), lithium iron phosphate |
|---|---|
| Stack | Up to 6 modules per controller, 54 kWh; two modules wall mounted, larger stacks floor standing |
| Inverter | Single phase 3, 3.6, 4, 4.6, 5, 6, 8, 10 and 12 kW; three phase available; 2 to 4 MPPTs; 97.6% conversion efficiency |
| EV charging | Optional DC module, 12.5 kW or 25 kW, vehicle to home and vehicle to grid on supported vehicles |
| Backup | Sigen Gateway, 0 ms switchover, generator input |
| Enclosure | IP66, minus 20 to plus 60 degrees C |
| Warranty | 10 years to 70% capacity, extendable to 15; gateway 5 years |
| App | mySigen, ten second updates, AI optimisation, tariff integration, VPP ready via Sigen Cloud |
| Certification | Installed under MCS for battery storage and solar PV by Energy Giants, with G98 or G99 notification to the network operator |
The same method as every solar and battery job we do.
Roof, consumer unit, where the stack would sit, your real usage from your bills, and whether the car or a heat pump is coming. A straight answer if a smaller battery, or a different one, suits you better.
Controller size, module count, whether the DC charger and the gateway earn their place, and the network operator application. An itemised quote with the MCS performance estimate. No prices on this page because every stack is different.
Our own team, usually a day with the solar. MCS certificates for the battery and the solar, the electrical certificate, the G98 or G99 acknowledgement, the app set up on your phone, and the warranty registered in your name.
We install three battery ranges and we say which fits.
Three phase controllers, stacks that scale, and a cloud platform built for fleets make SigenStor a strong fit for multi unit schemes and small commercial roofs. We survey and price site by site.
The SigenStor products are MCS certified, and Energy Giants holds MCS certification for battery storage and solar PV, so every installation gets its own MCS certificates, which is what export payments and most funding require.
Yes. The controller and the battery modules are IP66 rated and specified for outdoor mounting, from minus 20 to plus 60 degrees. Most of ours go on an outside wall near the meter position.
Usually. The Energy Controller can take existing strings directly, replacing an older inverter, and it can also sit alongside another inverter on the AC side. We check at the survey which is the better route.
Only with the Sigen Gateway fitted, which switches the house to the battery with no interruption. Without it the system shuts down with the grid, as the regulations require. We quote the gateway as an option.
Yes, with the optional DC charging module in the stack, at 12.5 kW or 25 kW, and on cars that support it the car can feed the house back. That is a rare feature in a home system and one of the reasons we added SigEnergy.
Ten years on the battery and the controller, guaranteeing at least 70% of capacity at year ten, and it can be extended to fifteen. The gateway carries five years. Our workmanship is insurance backed through Bluedrop.
It depends on the controller size, the number of modules and whether the charger and gateway are included, so we do not publish a price. Our cost guide gives indicative ranges for whole systems, and the survey gives you an itemised figure.
Yes. Three phase controllers and fleet management through Sigen Cloud suit multi unit schemes, and we deliver battery and solar programmes for housing providers with PAS 2035 coordination in house.
Free survey, itemised quote, an honest view on which battery suits you, and our own team on the install.
