A severe binding constraint (T_BLINK_TV_NGZ) manifested in TAS1 on 26 June 2026 evening with an exceptionally high shadow price of $7.308 million, creating significant constraint scarcity value. Regional electricity prices spiked to $94.91/MWh during the period, with TAS1 generation predominantly from hydroelectric sources (approximately 1290–1409 MW across the snapshot period) and minimal wind and gas-fired generation.
The extreme marginal value of the binding constraint T_BLINK_TV_NGZ indicates a severe limitation on power flow, with the constraint dominating all other active constraints by orders of magnitude. The reliance on hydroelectric generation with negligible wind and zero gas-fired capacity suggests constrained supply flexibility; the binding constraint likely reflects a physical or operational bottleneck that prevented cost-effective dispatch of available generation or interconnector flows, forcing the market to price scarcity at the constraint margin rather than clearing at lower 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.