Installing 19 Tesla Powerwalls with 500+ Solar Panels, 3 Heat Pumps and a Wind Turbine.

This video showcases one of the largest residential battery storage systems ever installed in the UK, a 305 kWh setup using Tesla Powerwall 3 and Tesla expansion packs, located at a large estate in Buckinghamshire.

The site includes a complex mix of green energy technologies: 8 separate solar PV systems (roof-mounted and ground-mounted), 3 battery systems (Tesla and Alpha ESS), 3 air source heat pumps, multiple EV charge points, and a 15 kW wind turbine. The property’s total annual electricity demand exceeds 100,000 kWh, spread across a manor house, a working stud farm, and a separate cottage.

We explore how the Tesla Powerwall 3 system works on a three-phase supply, how expansion packs are installed in stacked configurations, and how off-peak charging on a time-of-use tariff like E.ON Next Drive helps reduce electricity bills. You'll see how net metering and vector sum metering work in practice, and how Tesla's system manages high loads across multiple buildings.

We also cover the limitations of three-phase Powerwall installations under current DNO rules, how phase balancing works, and why Tesla was chosen over other battery brands for this particular upgrade. You'll see a full tour of the solar arrays, battery locations, EV charging points and the wind turbine, with commentary on real-world performance and integration.

The Tesla Powerwall 3 battery storage system has been installed in a basement. If you’re researching Tesla Powerwall 3 in the UK, looking at home battery storage for three-phase properties, or planning a large-scale solar and battery system, this video will hopefully help you out.


See our detailed review of Tesla Powerwall 3 here:    • Tesla Powerwall 3 Technical Breakdown - Ev...  

See our review of Tesla Expansion Packs here:
   • Tesla Powerwall 3 Expansion Packs NEW UPDA...  

Request a quotation from Spirit Energy: https://www.spiritenergy.co.uk/reques...

Watch on of our client's solar journey which shows the process of getting solar from point of enquiry through to the design, survey, modelling, project management, installation, and handover:    • Sam's Solar Journey  

00:00 Installing 19 Tesla Powerwalls
02:50 House Tour / Walk Around
03:05 Installing Battery Storage in a Barn
04:15 Tesla Wall Connector
05:17 How Does Battery Storage Three Phase Net Metering Work?
08:58 Tesla Powerwall 3 Vs Alpha ESS
10:30 Are Residential Wind Turbines Cost Effective?
12:57 Completing the Tesla Powerwall Expansion Pack Installation
16:27 How the Solar and Battery Storage Helps This House
17:57 Conclusion

Visit our website - https://www.spiritenergy.co.uk/
Try our Free Solar Calculator - https://www.spiritenergy.co.uk/solar-...
Try our Free Battery Storage Calculator - https://www.spiritenergy.co.uk/solar-...
Follow us on LinkedIn -   / spirit-solar-ltd  
Follow us on Instagram -   / spiritenergy_uk  
Follow us on Facebook -   / spiritenergyuk  
Follow us on X / Twitter - https://x.com/SpiritEnergy_UK