A binding constraint (F_T+RREG_0050) reached a high marginal value of $406.46/MWh in the NEM, indicating significant network congestion or service requirement constraints limiting available capacity. This constraint remained binding across multiple dispatch intervals, with a secondary binding constraint (F_T++NIL_MG_R60) also reaching a marginal value of $403.12/MWh, suggesting system-wide transmission or regulation service limitations.
The data shows two major binding constraints operating simultaneously with comparable high shadow prices, indicating that the NEM was operating under tight operational conditions where network limits or ancillary service requirements were restricting generation dispatch and creating material cost signals. The persistent binding of constraint F_T+RREG_0050 across multiple intervals suggests sustained rather than transient congestion, likely reflecting genuine physical or service delivery limitations rather than isolated incidents.
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.