Tasmanian prices spiked to $478.08/MWh in the 21:30 interval on 30 July 2026, representing a $125/MWh increase from the previous interval. The price elevation persisted across two consecutive intervals before moderating in subsequent periods.
The price spike was driven by a binding constraint with a marginal value of $79.33/MWh, which dominated the region's dispatch economics. A secondary binding constraint with a marginal value of $7.75/MWh also contributed to the elevated pricing, indicating multiple network or system limitations were active during the event.
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.