Forecast accountability
The Rooftop Solar Forecast That Swung Both Ways
AEMO's own Forecast Accuracy Reports grade its Central forecast of installed rooftop PV at -2.2%, -6.5% and then +5.5% across three consecutive ESOOs, with the last over-forecast in every NEM region. AEMO attributes both directions to one assumption, the growth in average system size. The actuals are provisional and the horizon is under a year.