Up to 20 kW of backup output — enough to run ducted air conditioning through a blackout.
Capacity is how long a battery lasts. Output is what it can run at once. Alpha-ESS delivers up to 20 kW of backup power, which is what separates a battery that keeps the fridge and lights on from one that runs the whole house, air conditioning included.
Themes summarised in our own words from verified owner reviews published on SolarQuotes. Ratings current at time of writing and may change as new reviews are added.
| Usable capacity | 9.3 kWh modules · up to 37.2 kWh single-phase |
| Maximum | 55.8 kWh usable three-phase (6 modules) |
| Chemistry | LFP (lithium iron phosphate) |
| Warranty | 10 years · 3,120 kWh throughput per kWh · 70% retained |
| Blackout backup | Up to 20 kW output · under 10 ms switchover |
| Inverter | Integrated hybrid on most models · retrofit option available |
Homes with heavy simultaneous loads — ducted air conditioning, pool pump, induction cooking — that need backup power, not just backup hours.
Published capacity figures differ between Alpha-ESS and independent reviewers, so get the exact model and usable kWh confirmed in writing on your quote.
Get a free assessment with your rebate and exact price — we confirm the model, capacity and warranty in writing before anything is ordered.
