A major binding constraint event occurred in the NEM with the I_CTRL_ISSUE_ML constraint reaching an exceptionally high shadow price of $695,425/MWh. This extreme marginal value indicates severe scarcity in the dispatch, with the constraint preventing significant additional supply from entering the market. The event reflects a critical transmission or operational limitation that is binding the market outcome and creating substantial locational price signals.
The extraordinarily high shadow price on the I_CTRL_ISSUE_ML constraint suggests an acute supply-demand imbalance where the constraint is preventing economically efficient dispatch. Secondary binding constraints on Tasmania-related services (F_TASCAP_RREG_0220 at $5.50/MWh and Tasmania load regulation services) indicate potential regional supply pressures, which may be contributing to the primary constraint's severity through cascading limitations on available generation or interconnector capacity.
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.