A major binding constraint (T_BLINK_TV_NGZ) with an exceptionally high shadow price of $7.308 million was binding in Tasmania during the early morning trading period of 5 June 2026. The constraint significantly restricted power flow despite relatively modest regional electricity prices around $80/MWh, with generation primarily supplied by hydroelectric (approximately 760 MW average) and wind generation (approximately 480 MW average).
The extreme marginal value of the T_BLINK_TV_NGZ binding constraint indicates a severe physical or operational limitation preventing increased energy transfers, creating a substantial economic cost for market participants attempting to relieve the constraint. The continued low generation from dispatchable sources (zero OCGT generation) combined with the reliance on hydro and wind suggests the constraint was limiting either the capacity to export available generation or import supplementary supply, with the high shadow price reflecting the cost of this physical bottleneck rather than demand-driven scarcity.
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.