A major binding constraint (T_BLINK_TV_NGZ) with an exceptionally high shadow price of $8.352 million occurred in TAS1 during the evening of 9 September 2026, causing RRP to spike to $63.09/MWh before moderating. The constraint significantly restricted power flows despite substantial generation capacity across hydro, wind, and gas-fired resources totalling over 3,200 MW.
The extreme marginal value of the T_BLINK_TV_NGZ binding constraint indicates a severe physical limitation on power transfer capacity during this period. The concurrent binding status of multiple other constraints (F_TASCAP_RREG_0220 and F_MAIN+RREG_0220) suggests compounding network restrictions were active, with the primary constraint T_BLINK_TV_NGZ producing a disproportionately higher shadow price, indicating it was the dominant limiting factor constraining dispatch and forcing reliance on higher-cost generation or demand curtailment.
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.