A major binding constraint (T_BLINK_TV_NGZ) with an exceptionally high shadow price of $7,308,000/MWh activated in TAS1 during the evening of 23 June 2026, whilst regional prices remained stable around $79/MWh. The constraint event occurred during a period of moderate hydro generation (approximately 1,146–1,255 MW) and minimal wind and gas-fired output.
The extreme marginal value of the binding constraint T_BLINK_TV_NGZ indicates severe physical or operational limits within the modelled constraint set, creating a significant gap between the shadow price and the observed regional reference price. The disconnect between the constraint's $7.3 million marginal value and the modest RRP suggests the constraint is binding on system feasibility rather than on economic dispatch, likely driven by network topology or operational requirements that restrict available capacity independent of standard pricing mechanisms.
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.