Comparing the household solar system installation patterns between Brisbane metropolitan region and regional Queensland

More than 30 percent of Queensland houses have rooftop solar system (photovoltaic i.e., PV). However, it is yet to know the factors affecting the solar power installations between Brisbane Metropolitan region and regional Queensland’ residents. This study examines the PV installations trend and patterns between Brisbane Metropolitan region and regional Queensland. The study also identifies key factors affecting the variation of PV installations between metropolitan and regional households. A quantitative methodology supported by secondary data and autoregressive integrated moving average (ARIMA) model has been adopted in this study. This study predicted that PV installations in the Brisbane metropolitan area would be increased after 2020. On the other hand, PV installations in regional Queensland is on the peak now and it would decline in 2020 and then a regular trend would appear. In addition, the study found a positive relationship between PV installations and the separate houses with three or more bedrooms. Therefore, these findings can help in future PV expansion planning in Queensland.