A binding constraint (T_BLINK_TV_NGZ) in TAS1 reached an exceptionally high marginal value of $7.308 million during the evening of 6 June 2026, whilst regional prices remained stable around $87/MWh. The constraint binding at this extreme shadow price indicates a severe physical limitation in the power system at that moment.
The constraint T_BLINK_TV_NGZ binding with a marginal value far exceeding typical network constraint penalties suggests a critical transmission or operational limit was reached. With Tasmanian generation comprising approximately 1,100–1,200 MW of hydro and 445–465 MW of wind during this period, the system was operating under a binding constraint that AEMO valued at over $7 million per MWh of constraint relief, indicating the constraint was preventing essential power flows and creating significant economic scarcity despite modest regional pricing that did not reflect this constraint value.
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.