A major binding constraint (T_BLINK_TV_NGZ) with an exceptionally high shadow price of $7.31 million was active in TAS1 during the 14:00–14:25 period on 21 June 2026. Regional electricity prices rose from approximately $71–75/MWh during this interval, with TAS1 generation dominated by hydroelectric output (1,183–1,260 MW) and minimal wind and thermal generation.
The extreme marginal value of the T_BLINK_TV_NGZ binding constraint indicates a severe physical or operational limitation was restricting supply to meet demand in the region. The constraint's dominance over all other active binding constraints (which carried marginal values below $12) suggests it was the primary factor limiting energy delivery and driving the price signal during this period.
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.