Performance data is sourced at 5 minute intervals from more than 1700 systems nationwide, as recorded by PVOutput.org. Since PVOutput.org users are self-selecting, the data set may not be representative of the average PV system output in Australia. In particular, in Tasmania and the Northern Territory, a small number of systems are contributing data and larger systems may dominate the aggregate.
Contribution calculations use demand data supplied in 5 minute intervals by the Australian Energy Market Operator, except Western Australia, which uses data supplied by the Independent Market Operator. Data on state photovoltaic capacities is sourced from the Clean Energy Regulator.