A high-value binding constraint (F_T+RREG_0050) with a shadow price of $282.59/MWh emerged in the NEM, indicating severe transmission congestion or network limitation in that region. This constraint was significantly more binding than concurrent constraints, with its marginal value approximately 45 times higher than the secondary binding constraint F_TASCAP_RREG_0220.
The elevated shadow price on constraint F_T+RREG_0050 indicates that a specific network limitation was actively restricting dispatch and creating scarcity value in the market. The binding constraint F_TASCAP_RREG_0220 with substantially lower marginal values (ranging from $3.37 to $6.33/MWh) suggests that while multiple constraints were active, F_T+RREG_0050 was the dominant limiting factor determining marginal pricing and system operation at that time.
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.