SA1 experienced high renewable penetration of 93.7% during the 12:00–12:25 settlement period on 30 June 2026, driven primarily by wind generation of approximately 1,800 MW. Regional reference prices exhibited moderate volatility across the six five-minute intervals, ranging from $34.24/MWh to $77.89/MWh, with a spike at 12:10.
The binding constraint F_MAIN+RREG_0220 was active across all settlement intervals with marginal values between $4.66 and $8.55/MWh, indicating it was the primary factor constraining dispatch and influencing pricing outcomes. The high renewable penetration and moderate price volatility reflect the interplay between elevated wind output and the binding constraint's shadow price, which contributed to price formation throughout the settlement window.
Causal analysis generated by gridIQ's synthesis model from live AEMO market data: dispatch prices, generation mix, interconnector flows and market notices in the interval surrounding the event.