Tasmania achieved 100% renewable energy penetration during the evening of 19 June 2026, with hydro generation of approximately 900–914 MW and wind generation of 285–301 MW supplying the region. Regional reference prices ranged from $11.46/MWh to $27.20/MWh across the five-minute settlement periods, with no gas-fired generation required.
The high renewable penetration was driven by strong combined hydro and wind output totalling approximately 1,200 MW, sufficient to meet Tasmanian demand without thermal generation. Binding constraint F_T+RREG_0050 was active across multiple periods with marginal values of $3.45–$3.81/MWh, and constraint F_I+RREG_0220 also bound with a marginal value of $3.80/MWh, indicating that network limitations rather than fuel availability were the primary price drivers during this 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.