Tasmania (TAS1) experienced 100% renewable energy penetration during the evening of 7 June 2026, with hydro generation comprising approximately 2,000 MW and wind generation around 100–115 MW across the settlement periods. Regional reference prices remained moderate, ranging from $87–98/MWh, despite the high renewable contribution.
The high renewable penetration was driven by sustained hydro output at elevated levels combined with modest wind generation, which together met regional demand without requirement for gas-fired generation. Two binding constraints with marginal values between $4.83–$5.55/MWh (F_MAIN+RREG_0220 and F_T+RREG_0050) suggest that physical network or ramping limits were restricting dispatch during this period, moderating prices relative to what unconstrained renewable supply alone might otherwise achieve.
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.