A binding constraint (T_BLINK_TV_NGZ) in TAS1 reached an exceptionally high shadow price of $7.308 million/MWh during the 12:30–13:00 period on 26 June 2026, coinciding with elevated regional prices peaking at $109.57/MWh around 12:45. The constraint remained active across multiple successive settlement intervals, indicating sustained transmission or operational pressure within the region.
The high marginal value of the binding constraint T_BLINK_TV_NGZ suggests severe scarcity or congestion in a critical element of the TAS1 system during this period. Whilst generation was dominated by hydro output (ranging 1206–1368 MW) with minimal wind and no gas generation, the constraint's extreme shadow price indicates that the transmission system or operational network element it governs became a limiting factor in meeting demand or exporting available supply, forcing the market to price that constraint at exceptional levels.
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.