A major binding constraint (T_BLINK_TV_NGZ) with an exceptionally high shadow price of $7.308 million/MWh became active in TAS1 during the 18:00–18:05 settlement periods on 24 June 2026. Regional electricity prices increased from $70.20/MWh to $76.64/MWh as the constraint tightened, despite stable hydro-dominated generation (~1050 MW) and minimal wind contribution.
The binding constraint T_BLINK_TV_NGZ, which dominated the marginal value stack at $7.308 million/MWh, directly restricted network capacity and drove the observed price elevation. The constraint activation occurred during an evening peak demand window when Tasmania's generation mix remained heavily reliant on hydroelectric output with negligible wind and rooftop solar contribution, limiting flexible supply-side response to the network limitation.
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.