TAS1 experienced a moderate price spike with RRP reaching $449.57/MWh in the 11:20 interval, representing a sharp increase from the $287/MWh baseline observed in preceding intervals. Prices spiked across two consecutive intervals (11:10 and 11:20) before moderating back towards $336/MWh by 11:30.
The spike was driven by binding constraint F_TASCAP_RREG_0220, which exhibited marginal values of $15.45, $7.77, and $4.95 across the event window, indicating transmission or reserve capacity limitations that restricted supply availability. A secondary constraint F_T+RREG_0050 with marginal values of $3.75 also bound during this period, suggesting compounding network limitations that compressed available generation capacity relative to demand, lifting prices above typical levels despite hydro generation remaining elevated at approximately 1,315–1,353 MW.
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.