A binding constraint (F_T++NIL_MRWF_TG_R6) with a marginal value of $244/MWh became active in the NEM, indicating significant scarcity pricing in the market. This high shadow price reflects a constraint limiting power flow and creating a bottleneck in the dispatch process during this period.
The elevated marginal value suggests demand-supply balance was tight relative to the physical or operational limit imposed by this constraint. Multiple binding constraints were simultaneously active, with the primary constraint (F_T++NIL_MRWF_TG_R6) having the highest shadow price at $244/MWh, indicating it was the most constraining factor in the market dispatch and the primary driver of scarcity pricing during this interval.
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.