Barwon Heads: 15.75 kW solar + SigenStor 40.3 kWh battery (December 2025)
A 15.75 kW solar system and a 40.3 kWh Sigenergy SigenStor battery for a three-phase home in Barwon Heads, with nine months of measured results.
Location: Barwon Heads, Bellarine Peninsula
Switched on: December 2025
System: 15.75 kW solar with a 40.3 kWh Sigenergy SigenStor battery (three-phase)
A local homeowner in Barwon Heads had our team install a new 15.75 kW solar system with a 40.3 kWh Sigenergy SigenStor battery. The system runs on a three-phase supply and was switched on in December 2025.
The results below come from the system’s own monitoring data for the first nine months of 2026.
15.75 kW
of REC solar panels
40.3 kWh
Sigenergy SigenStor battery
13,212 kWh
generated in nine months
87%
of the home’s power from its own solar and battery
What the homeowner wanted
A solar and battery system large enough to cover the home’s daytime use, charge the battery, and carry the home through the evening with as little grid power as possible.
What we installed
- 35 x REC Alpha Pure-RX 450 W solar panels (15.75 kW)
- Sigenergy SigenStor 15 kW three-phase hybrid inverter
- SigenStor battery: 5 modules, 40.3 kWh in total
- Installed by our team: designed and installed by our installation team.
Results so far
From 1 January to 30 September 2026 the system generated 13,212 kWh of solar energy, and the battery discharged 2,835 kWh into the home.
Over the same nine months the home used 7,272 kWh and drew 939 kWh from the grid. That means about 87% of the home’s electricity came from its own solar and battery.
Source: Sigenergy monitoring data for this system, 1 January to 30 September 2026, read on 18 October 2026. Figures are as recorded by the system.
