A major binding constraint (T_BLINK_TV_NGZ) with an exceptionally high shadow price of $8.352 million/MWh occurred in TAS1 on 31 August 2026 around 14:25–14:50 AEST. Regional electricity prices remained relatively moderate at approximately $25–29/MWh despite the extreme constraint shadow price, suggesting the constraint was actively limiting dispatch rather than driving spot prices upward.
The binding constraint T_BLINK_TV_NGZ with marginal value of $8.352 million/MWh indicates a severe physical or operational limitation within the Tasmanian network that AEMO's dispatch algorithm was unable to relieve through normal market mechanisms. The generation mix at the time (approximately 1,141–1,189 MW hydro and 114–214 MW wind) was substantial, yet the constraint's extreme shadow price suggests that demand or physical asset configuration created a binding floor on dispatch that could not be economically resolved, forcing the market to accept the constraint rather than incur the penalty cost.
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.