A binding constraint (T_BLINK_TV_NGZ) in TAS1 reached an exceptionally high shadow price of $8.352 million, coinciding with a sharp price spike to $139.47/MWh at 02:35 UTC on 10 July 2026. The constraint remained binding across the snapshot period whilst Tasmania maintained robust hydro and wind generation throughout.
The extreme shadow price on the binding constraint T_BLINK_TV_NGZ indicates severe scarcity in a critical transmission element or dispatch pathway, which directly drove the RRP spike in the final settlement interval. Despite adequate generation capacity (hydro output ranging 1151–1321 MW and wind 51–64 MW), the constraint's binding status suggests physical network limitations prevented the region from fully utilising available supply, forcing marginal generators to operate at significantly elevated costs.
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.