Solar & Battery Storage
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Sigenergy SigenStor Installer in Teesside, County Durham & North Yorkshire
The all-in-one home energy stack
The SigenStor combines a solar inverter, modular battery storage, optional EV charging and whole-home backup in one beautifully engineered stack. Start with as little as 6kWh and add battery modules up to 54kWh per stack as your needs grow. Alps Electrical is an experienced Sigenergy installer based in Yarm, installing SigenStor systems for homes across Teesside, County Durham and North Yorkshire.
Quick Answer
Who installs the Sigenergy SigenStor near me, and what does it cost?
ALPS Electrical installs and commissions the Sigenergy SigenStor across Teesside, County Durham and North Yorkshire. We were one of the first installers of the SigenStor in the region, and you can watch our complete installations on our YouTube channel. As a guide, a full solar and SigenStor battery system typically costs £10,000–£13,500 installed, while battery-only systems cost less, and can be combined with a full-home back up gateway at an extra cost. Larger systems with more storage cost more. Home solar and battery installations are zero-rated for VAT until 31 March 2027, and every quote is a fixed price confirmed after survey.
About the Sigenergy SigenStor
The Sigenergy SigenStor is an all-in-one home energy system — a solar inverter, a modular battery, optional integrated EV charging and whole-home backup in a single stacked unit, managed by one controller and the mySigen app. It is modular, so you start with the capacity you need and add 6 and 9 kWh battery modules as your usage grows, and it supports single- and three-phase supplies natively.
Sigenergy Installer in the North East
We install several battery brands, so we recommend Sigenergy when it’s genuinely the best fit. It’s usually our first choice when:
- You want to add storage gradually. The modular stack lets you add capacity in smaller steps, using 6kWh or 9kWh modules, rather than one large unit at a time
- Your panels are spread across several roofs. The SigenStor has four solar inputs (MPPTs), so each roof face can be managed separately for the best performance
- You want full home backup to keep your whole house running in a power cut
- The battery is going outside. Built-in heating and cooling keep it running efficiently in the hottest and coldest weather
- You have a three-phase supply, which the SigenStor supports natively, whilst also supporting single phase
If another system would suit you better, we’ll tell you. That’s the advantage of an installer who fits more than one brand and gives transparent and honest advice tailoring each and every quote to your exact requirements.
SigenStor Key Specifications
6–54 kWh
Modular Storage per stack
3–25 kW
Inverter (Single phase & 3 phase)
100% Depth of Discharge
Peak inverter efficiency
Whole-home
Backup Ready
Figures are indicative of the Sigenergy SigenStor product range and depend on the exact configuration specified for your home. Confirmed at survey.
Modular Battery — Start Right, Grow Later
The SigenStor battery is built from stackable 6kWh and 9kWh modules, which can be mixed in the same stack, so a single stack can scale from 6kWh up to 54kWh. You buy the capacity that matches your usage now and expand later without replacing the inverter or starting again. For a household that expects to add an EV or a heat pump in the next few years, that headroom and ease of adding more is a real advantage to the Sigenstor.
Integrated EV Charging
The SigenStor supports integrated EV charging through an optional DC module (rated 12.5 kW or 25 kW) that draws directly from your solar and battery for faster charging with fewer conversion losses, and Sigenergy also offer a separate AC EV charger (around 7–22 kW). Whether either is worth it depends on your car, you’re driving and your budget, and more importantly the location of the stack in relation to where you need to charge your vehicle, but we’ll talk it through honestly at survey.
Whole-Home Backup and Smart Energy Management
With the Sigen Gateway, the SigenStor can provide whole-home backup on both single and three-phase supplies, switching over near-instantly when the grid drops so your home keeps running. The mySigen app gives you near-real-time visibility of solar generation, home use, battery level and grid flow, and the system works with time-of-use tariffs such as Octopus Agile, Flux and Go to charge when electricity is cheapest to buy and discharge when the export payments are higher making the system work harder for you without you having to do a thing.
Sigenergy SigenStor vs Tesla Powerwall 3
Both are premium, whole-home systems, and we install both — so we can be straight about the trade-offs. The Powerwall 3 is a superbly polished, fixed-capacity unit with a first-class app. The SigenStor is more configurable: modular capacity, native three-phase, and optional DC EV charging. Which one is right depends on your home, not on which brand we would rather sell.
| Feature | Tesla Powerwall 3 | Sigenergy SigenStor |
|---|---|---|
| Storage capacity | 13.5kWh per unit, expandable with up to 3 Expansion units (13.5kWh each) | 6–54kWh per stack, in 6kWh and 9kWh modules |
| Inverter output | 3.68–11.04kW | 3–25kW |
| Solar inputs (MPPTs) | 3 | 4 |
| Supply type | Single-phase | Single and three-phase |
| EV charging | Separate charger | Optional integrated DC module and separate AC charger |
| Whole-home backup | Yes, with Backup Gateway 2 | Yes, with Sigen Gateway |
| App | Tesla app | mySigen app |
Consett, County Durham: 14.25kW solar with 36kWh Sigenergy SigenStor storage and full home backup
This customer originally wanted a Tesla Powerwall 3. But he also wanted solar panels on four different roof faces, each facing a different direction, and every roof face needs its own solar input on the inverter (known as an MPPT) to perform at its best. The Powerwall 3 has three, while the Sigenergy system has four, so we recommended Sigenergy to get the most from every panel.
We installed 14.25kW of solar and 36kWh of Sigenergy SigenStor battery storage with full home backup. We also worked with Northern Powergrid on the grid application and secured a better outcome for the customer.
Tesla V Sigenergy
Here we carried out two solar surveys in Blythe, Northumberland, and Consett, County Durham. One customer wanted the Tesla Powerwall 3 and the other wanted the Sigenergy Sigenstor.
Watch the video to see the surveys, and why these customers chose those systems.
Frequently Asked Questions
Can I add more Sigenergy batteries later?
Yes. That is one of the SigenStor’s biggest advantages. You can add 6kWh or 9kWh modules at any time, up to six modules and 54kWh per stack, without replacing the inverter.
Will a SigenStor keep my power on in a power cut?
Yes, when it is installed with the Sigen Gateway, which provides whole-home backup on single- and three-phase supplies. Without the gateway, the system will not power your home during a power cut, so let us know at survey if backup matters to you.
Can the SigenStor be installed outside?
Yes. The SigenStor is designed for outdoor installation, and its built-in heating and cooling keep it running efficiently all year round. We will check the best location at your survey, in line with current battery safety standards.
Can I add a SigenStor to my existing solar panels?
Yes. The SigenStor can be added as an AC-coupled system, capturing the free energy generated by your existing solar array without replacing your current inverter.
Should I choose Sigenergy or Tesla?
Both are excellent premium systems, and we install both. Sigenergy is more flexible, with modular storage, four solar inputs and three-phase support. The Tesla Powerwall 3 is a polished, simple system with a first-class app. See the comparison above, or ask us at your free survey.
See the Process
Why Homeowners Choose ALPS Electrical | Solar, Battery & EV Experts in the North East
Watch our
videos!
We film our installations and publish them on YouTube. We believe it offers customers a chance to see how we work and meet the team, and gives full transparency.
Why Choose ALPS Electrical For Your Sigenergy System?
We're a family-run business based in Yarm, with more than 500 five-star reviews across Google and Checkatrade. We were one of the first installers of the Sigenergy SigenStor in the region, and we've filmed complete SigenStor installations so you can see exactly how we work before you book.
Because we also install Tesla, Fox ESS and other leading brands, our advice is honest: we'll only recommend Sigenergy if it's the right system for your home. Every installation is carried out by our own experienced team, never subcontracted. We set up your mySigen app before we leave, and our in-house aftercare team is on hand for the life of your system.
Get in touch for a free, no-obligation quote.
- 0% VAT on home solar and battery installations until 31 March 2027
- Owner-led survey and system design
- Northern Powergrid application handled for you
- mySigen app setup and tariff configuration included
- In-house aftercare for the life of your system
- Fixed written price, with no surprise extras
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