Bunbury enjoys ≈ 4.8 kWh/m²/day of solar radiation, which converts to about 3.8–4.0 kWh per installed kW per day.
| System size | Avg. kWh / day | Avg. kWh / year |
|---|---|---|
| 3 kW | ~11.5 | ~4,200 |
| 5 kW | ~19 | ~7,000 |
| 6.6 kW | ~26 | ~9,500 |
| 10 kW | ~39 | ~14,200 |
Even in winter, a 6.6 kW system will still deliver about 15–16 kWh per day. Bunbury’s sunny climate ensures solar generation is high year-round.

