A major binding constraint event occurred in TAS1 on 28 August 2026 with constraint T_BLINK_TV_NGZ reaching an exceptionally high shadow price of $8.352 million per MWh. Regional spot prices remained moderate, ranging from $40.77 to $25.10/MWh during the period, whilst Tasmania's generation mix comprised substantial hydro output (approximately 2451 MW combined), wind generation (809 MW combined), and gas-fired capacity (250 MW).
The extreme shadow price on binding constraint T_BLINK_TV_NGZ indicates severe transmission or operational limitations in TAS1 that significantly constrained dispatch options relative to demand. The constraint's marginal value ($8.352 million) vastly exceeds other simultaneously binding constraints, suggesting a critical bottleneck in the system that forced economically inefficient generation dispatch or load shedding risk, despite moderate spot price realisation in the market.
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.