A binding constraint (T_BLINK_TV_NGZ) in TAS1 reached an exceptionally high shadow price of $8.35 million, indicating severe scarcity or transmission limitations affecting the region during the 21:20–21:50 settlement period on 23 August 2026. Regional spot prices ranged between $34–$52/MWh during this interval, with Tasmanian generation comprising approximately 1,200–1,300 MW of hydro and 290–360 MW of wind across the snapshot period.
The extreme marginal value of the binding constraint T_BLINK_TV_NGZ significantly exceeds all other active constraints (which have marginal values under $5), suggesting this constraint was the dominant scarcity driver and a critical bottleneck. The constraint's operation during a period of steady hydro and wind generation, combined with zero gas-fired output, indicates that the binding constraint was active under normal operating conditions rather than as an emergency response, pointing to systematic transmission or flow limitations that restricted supply during this trading interval.
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.