TAS1 experienced a moderate price spike reaching $382.26/MWh at 06:40 on 8 July 2026, representing a $116/MWh increase from the prior interval. Prices rose steadily over the preceding 30 minutes from $237.46/MWh, peaking mid-morning before declining to $349.82/MWh in the following interval.
The binding constraint F_S+TBTU_L1 carried a marginal value of $66.60/MWh, indicating transmission congestion was a primary driver of the price elevation. The constraint F_TASCAP_RREG_0220 also bound across multiple intervals with marginal values ranging from $5.94–$7.81/MWh, contributing additional price pressure. Hydro generation remained stable at approximately 1.6 GW throughout the event, whilst wind output declined marginally and gas generation was unavailable during the spike interval, suggesting limited dispatchable capacity to relieve the binding transmission constraint.
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.