A major binding constraint (T_BLINK_TV_NGZ) with an exceptionally high shadow price of $7.308 million occurred in TAS1 on 10 June 2026 around 1350–1415 hours. Regional electricity prices remained relatively stable in the $80–86/MWh range despite the constraint's severity, suggesting effective constraint management without wholesale price escalation.
The binding constraint T_BLINK_TV_NGZ's extreme marginal value indicates a critical network or operational limitation that significantly restricted available capacity in the region. With a generation mix comprising approximately 1000+ MW of hydro and 120–150 MW of wind, Tasmania was operating near its binding constraint threshold, leaving minimal room for additional flows and necessitating the constraint to balance supply and demand without triggering broader price spikes across the NEM.
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.