Battery storage Case Studies

Ascot - Tesla Powerwall 2 (13.5 kWh) (Aug '20)

Posted by Spirit Energy on 01 Aug 2020

Bence Powerwall

In August 2020, Spirit installed Powerwall 2 for a client in Ascot, Berkshire. We mounted the weatherproof battery and gateway on the outside wall of Mr B’s home, with the cabling going through to the distribution board inside.

Mr B has a 3.5kWp PV system, with annual generation of 3,170kWh. By adding the battery, we estimate that his onsite consumption of solar energy will increase from 24% to 75%. His annual electricity usage supplied by solar should increase from 25% to 79%.

Additionally, Powerwall has backup functionality to keep the home running during a power cut.


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Battery Tesla Powerwall 2 (13.5 kWh)
Charger Tesla (3.68kW)
Key function Solar utilisation
Other functionality Power cut protection