VIC1 experienced a moderate price spike reaching $365.95/MWh on 8 July 2026 at 06:35 UTC, with prices elevated across two consecutive intervals following a steady climb from $218.66/MWh over the preceding 30 minutes. The spike continued to intensify, peaking at $426.70/MWh in the subsequent interval.
The binding constraint F_TASCAP_RREG_0220 was active across all five intervals with marginal values ranging from $5.94 to $7.81/MWh, indicating a transmission or reserve constraint was actively limiting dispatch capacity during the event window. The persistent and increasing price trajectory, coupled with high OCGT generation (1,070 MW) and elevated battery discharge (467 MW), suggests the constraint was preventing cheaper generation sources from fully meeting demand, forcing the market to rely on higher-cost marginal capacity to resolve the shortfall.
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.