Battery storage — Whole home back up
Store the solar you generate, power your home and your car, and stay on when the grid goes down. We install complete Tesla and Sigenergy systems — solar, storage, EV charging and even vehicle-to-grid — designed around how you use energy.
Why add a battery?
Use more of your own solar.
Without storage, surplus daytime power is exported for little; a battery keeps it for later, so you buy far less from the grid.
Beat peak charges.
On a time-of-use tariff, charge cheaply overnight (or store your own solar) and use that energy when grid prices peak — taking the most expensive units off your bill.
Better return on investment.
A battery makes your solar work harder — and installed as a complete system (solar, storage and EV together), the parts reinforce each other to improve your overall return.
Backup when the grid goes down.
With the right setup, your essential circuits keep running during a power cut.
More independence.
Less reliance on the grid and more protection against future price rises.
Two complete systems — a whole-system comparison
We install two of the best complete solar-and-storage ecosystems on the market: Tesla and Sigenergy.
These are more than just batteries — each is a whole system that brings together solar, storage and EV charging. Both are excellent; the right choice depends on your home, your energy use and how you want to grow.
We'll recommend the best fit at survey.
What to compare
Even an efficient solar system can waste energy if excess power is not stored for later use. Battery storage helps balance your energy use, reduce reliance on the grid and support lower electricity costs. Smart energy monitoring shows how much energy your panels produce and your home uses, making it easier to plan future upgrades and storage options. Choose us as your solar battery storage installers today.
Tesla - Powerwall 3 System
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System Approach: All-in-one — solar inverter and battery combined in a single unit.
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Solar & Storage: Integrated hybrid inverter with ~13.5 kWh battery.
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EV Charging: Tesla Wall Connector (smart AC charger).
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Vehicle-to-Grid (V2G): Not currently offered.
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Backup Power: Whole-home backup capable (with Gateway).
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Expandability: Add another Powerwall for more capacity.
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Monitoring: Tesla app.
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Best Suited To: A proven, simple, all-in-one system.
Sigenergy - SigenStar system
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System Approach: Modular stack — inverter + battery, with optional EV and backup modules; expandable over time.
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Solar & Storage: Modular inverter with stackable battery, ~5–48 kWh.
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EV Charging: Integrated DC EV charger as part of the system.
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Vehicle-to-Grid (V2G): Yes — bidirectional charging: your EV charges from solar and can discharge back to your home or the grid (needs a compatible vehicle + grid approval).
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Backup Power: Backup capable; flexible by configuration.
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Expandability: Highly modular — add battery capacity or an EV module later.
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Monitoring: mySigen app.
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Best Suited To: Flexibility, future expansion and cutting-edge EV / V2G.
The Sigenergy edge: Vehicle-to-Grid (V2G)
Sigenergy's system can include a DC EV charger with bidirectional "vehicle-to-grid" (V2G) capability.
In plain terms, your electric car doesn't just charge from your solar — it can also act as extra storage, sending power back to your home or the grid when it's worth more.
Paired with a smart tariff, that turns your EV into part of your energy system.
Available with a compatible vehicle and grid approval — we'll advise on what's possible for you.
What size do I need?
The right capacity depends on how much electricity you use, when you use it, the size of your solar array and your budget.
As a rule of thumb, the battery should carry your evening and overnight use on a typical day without over-sizing (which adds cost you won't use).
We size it properly at survey rather than selling you more than you need.
Adding storage to an existing system
Already have solar?
You can usually add storage later — and Sigenergy's modular design makes it easy to expand as your needs change.
Thanks to the current 0% VAT on domestic battery installations (including retrofits), it's more affordable than ever.
Frequently asked questions
What makes us different
MCS-certified solar team
Accredited installation specialists ensuring your battery storage setup complies fully with strict UK industry standards.
Expandable storage options
Flexible battery systems designed to allow straightforward capacity upgrades as your home energy demands grow.
Ongoing support after installation
Continuous technical assistance and system care to keep your equipment operating safely and efficiently.