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Geko Energy is now a Tesla Certified Installer
Tesla Powerwall 3, Powerwall 3 Expansion, backup hardware and the Tesla Wall Connector, designed and fitted by our own engineers alongside Fox ESS, Sigenergy and EcoFlow.
Written by Anthony Bushen-Garvie 4 min
Kington, Herefordshire, 10 November 2026. Geko Energy, the MCS-certified solar and battery installer, is now a Tesla Certified Installer. Homeowners across England and Wales can now have Tesla Powerwall 3, Powerwall 3 Expansion units, Tesla backup hardware and the Tesla Wall Connector designed and fitted by Geko's own employed engineers.
Tesla joins Fox ESS, EcoFlow and Sigenergy in the battery systems Geko installs. Every system starts with a free 30-minute video consultation with an engineer, and every install carries a 6-year IAA insurance-backed guarantee. No doorstep sales.
What we can now fit
- Tesla Powerwall 313.5 kWh home battery with a solar inverter built in. Add Expansion units for more storage.
- Powerwall 3 ExpansionAdds 13.5 kWh of usable storage. Up to three per Powerwall 3.
- Tesla Backup Gateway 2Detects a power cut, separates your home from the grid and keeps it running on battery and solar.
- Tesla Wall ConnectorTethered Type 2 charger for Tesla and other electric cars: up to 7.4 kW on single-phase, up to 22 kW on three-phase.
What it means for Geko customers
“Our customers can now get Powerwall 3 from the same engineers who design their solar. One team, one price, one guarantee.”
“Homeowners compare batteries on capacity, backup and warranty. Now we can put Powerwall 3, Fox ESS and Sigenergy side by side and recommend the one that fits.”
Powerwall 3, Fox ESS or Sigenergy?
All three are home batteries we design and fit, alongside EcoFlow PowerOcean. The right one depends on your home, your usage and your tariff, and an engineer recommends one on your consultation.
| Tesla Powerwall 3 | Fox ESS | Sigenergy SigenStor | |
|---|---|---|---|
| Format | All-in-one battery with a built-in solar inverter | Hybrid inverter with a separate battery | All-in-one modular stack |
| Usable capacity | 13.5 kWh usable per unit, up to 54 kWh with three Expansion units | EP12: a little over 10 kWh usable | Modular, sized to your home |
| Battery warranty | 10 years, 70% capacity retained (needs an internet connection) | 10 years or a set throughput, whichever comes first | 10 years |
Swipe to see the full table
More on each: Tesla Powerwall 3, Fox ESS and Sigenergy. Comparing quotes? Our home battery checklist covers usable capacity, power, backup, location, warranty limits and price per usable kWh.
How to get a Tesla Powerwall from Geko
- 1Free 30-minute video consultation. An engineer looks at your usage, tariff, roof and any plans for an EV or heat pump.
- 2Design and one total price. Powerwall 3, Fox ESS, Sigenergy or EcoFlow, sized to your home, with backup and the exact warranty terms on the quote.
- 3Installed by our own engineers. We handle the DNO notification, MCS certificate and SEG registration.
- 4Commissioned and guaranteed. Set up in the Tesla app, with a 6-year IAA insurance-backed guarantee on our work.
Batteries installed in homes are zero-rated for VAT until 31 March 2027, then 5% from 1 April 2027 (VAT Notice 708/6; what that means for timing).
Want Powerwall 3 for your home?
FAQs
Is Geko Energy a Tesla Certified Installer?
Yes. Geko Energy is a Tesla Certified Installer, so our own employed engineers can design and fit Tesla Powerwall 3, Powerwall 3 Expansion, Tesla backup hardware and the Tesla Wall Connector.
Which Tesla products can Geko install?
Tesla Powerwall 3, Powerwall 3 Expansion units, Tesla Backup Gateway 2 for power-cut backup, and the Tesla Wall Connector EV charger.
How much can Powerwall 3 store?
Each Powerwall 3 stores 13.5 kWh of usable energy. Up to three Powerwall 3 Expansion units can be added, each another 13.5 kWh, for up to 54 kWh in total.
Does Powerwall 3 keep the lights on in a power cut?
With Tesla Backup Gateway 2 fitted, yes. It detects the power cut, separates your home from the grid and runs it from the battery and solar. Without Backup Gateway 2, Powerwall 3 gives no backup power. We confirm what will run on your quote.
Do you still fit Fox ESS, Sigenergy and EcoFlow?
Yes. Tesla Powerwall 3 joins Fox ESS, Sigenergy and EcoFlow PowerOcean. On your free video consultation, an engineer recommends the one that suits your home, usage and tariff.
Where do you install Tesla Powerwall?
Across England and Wales, fitted by Geko's own employed engineers. We handle the DNO notification, MCS certificate and SEG paperwork.
Is there VAT on a Tesla Powerwall?
Batteries installed in homes are zero-rated for VAT until 31 March 2027, then 5% from 1 April 2027, under HMRC's VAT Notice 708/6.
About Geko Energy
Geko Energy Ltd (company number 15986005) is an MCS-certified installer of solar panels, home batteries and EV chargers, based in Kington, Herefordshire. Its own employed engineers install across England and Wales. Customers start with a free 30-minute video consultation, and every install carries a 6-year IAA insurance-backed guarantee.
Media enquiries: info@geko.energy or 07700 140545.
Solar and Powerwall 3, designed for your home
A free 30-minute video consultation with one of our engineers, then one total price with the exact battery, backup and warranty terms on it.
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Tesla, Powerwall and Wall Connector are trademarks of Tesla, Inc. Geko Energy is an independent installer. Product specifications change, so we confirm the exact model, capacity and warranty terms on your quote.
