Off Grid Residential Solar Power System – Grass Valley, WA

Grass Valley WA

Grass Valley is a small town site about 110 km  east of Perth, Western Australia in the Avon Valley area.  Greg and Lizzie, a retired couple, decided to switch over to solar to power their modest home in the 100 acre property. Grid power was not available in the location and it would have costed in excess of $45,000 to connect to the grid. LPG gas was used for cooking and hot water. Electricity to power lighting, air conditioning, fridge etc was provided by a manually operated  20kVA diesel generator costing over around $100 per week in fuel alone. This weekly expense was also offset by the newly installed off grid residential solar power system.

Regen Power designed, installed and commissioned 6kW off grid residential solar power system consisting of:

  1. 26 x 260W GCL solar panels
  2. SMA Sunny Island 6.0 grid forming inverter and SMA Sunny Boy 5kW grid feeding solar inverter with 24 x 2V
  3. 470 Ah battery bank.

The system is fully automated and can be monitored and controlled online. Regen Power is also collaborating with Emeritus Professor Paul McCormick, University of Western Australia in validating a new simulation tool for calculating the performance of a photovoltaic (PV) energy system with battery backup.


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