Tasmania experienced a major constraint event on 11 September 2026 in the evening, with binding constraint T_BLINK_TV_NGZ reaching an exceptional shadow price of $8.352 million per MWh. Regional prices remained stable at approximately $85/MWh across the affected period, despite the extraordinarily high constraint marginal value indicating severe transmission limitations.
The binding constraint T_BLINK_TV_NGZ with its $8.352 million marginal value indicates a critical network limitation was actively restricting power flows in Tasmania during this period. The stability of RRP at $85.22 suggests the constraint was binding but did not fully clear the market at the marginal value, potentially due to the constraint limiting flows rather than setting dispatch direction, or alternative generation sources meeting demand within the constrained configuration.
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.