A major binding constraint (T_BLINK_TV_NGZ) with an exceptionally high shadow price of $7,308,000/MWh occurred in TAS1 during the early morning of 26 June 2026, creating severe network congestion. Regional electricity prices fluctuated between $54.54 and $70.22/MWh during this period, with the constraint appearing to episodically bind across multiple settlement intervals.
The extraordinarily elevated marginal value of the binding constraint T_BLINK_TV_NGZ indicates a critical physical limit in the network that could not be economically relieved through increased generation or demand management. The generation mix during this period was dominated by hydroelectric output (approximately 1,068–1,243 MW), with minimal wind contribution and no gas generation available, suggesting limited flexible supply options to alleviate the constraint during this off-peak period.
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.