Tasmania (TAS1) experienced high renewable energy penetration at 92.0% during the evening of 24 July 2026, with hydro and wind generation combining to supply approximately 3,878 MW out of 4,162 MW total capacity. Regional electricity prices gradually increased from $24.72/MWh to $31.33/MWh across the five-minute settlement intervals, reflecting tightening supply conditions despite the high renewable contribution.
The price trajectory upward during high renewable penetration suggests that conventional generation was progressively displaced as demand evolved through the evening period. The binding constraint F_T+RREG_0050 with marginal values ranging from $2.09/MWh to $4.55/MWh indicates that a specific transmission or reserve regulation constraint was limiting the system's ability to fully utilise available generation capacity, likely forcing more expensive marginal generation (the 124 MW of GAS_OCGT) into the market to meet demand while the constraint remained active.
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.