A major binding constraint (T_BLINK_TV_NGZ) with an exceptionally high shadow price of $7.308 million occurred in Tasmania during the 05:40–06:05 period on 30 June 2026. Regional electricity prices spiked to $73–74/MWh in the affected window before moderating, whilst the constraint remained active across multiple dispatch intervals.
The binding constraint T_BLINK_TV_NGZ, with its extreme marginal value of $7.308 million, directly constrained supply and drove the sharp price elevation observed in the 05:45–05:55 period. Tasmania's generation mix was dominated by hydroelectric output (1,130–1,160 MW) with moderate wind contribution (103–134 MW), indicating that high renewable penetration and the active constraint on network capacity or transfer limits created a severe bottleneck that prevented the region from meeting demand elastically, thereby pushing prices to levels well above the baseline $50/MWh.
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.