TAS1 experienced sustained negative pricing across 8 consecutive intervals from 17:25 to 18:00 on 2 July 2026, with prices ranging from -$6.93/MWh to -$7.87/MWh. The region's generation was dominated by renewable sources, with wind contributing approximately 378 MW average and hydro around 311 MW average, whilst gas-fired generation remained offline.
The negative pricing reflects an oversupply condition in TAS1 where renewable generation exceeded local demand, forcing downward price pressure. The binding constraint F_T+RREG_0050 with a marginal value of $2.91/MWh was active across all intervals, indicating that a specific network or system constraint was limiting the region's ability to export excess generation, thereby trapping surplus renewable output and driving prices negative.
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.