Tasmania's electricity market reached 100% renewable generation on 23 May 2026, with hydroelectric and wind resources meeting all demand throughout the evening period. Regional reference prices (RRPs) remained stable and relatively low at approximately $97/MWh, reflecting the abundant renewable supply with minimal price volatility across the five 5-minute settlement periods.
The complete renewable penetration was driven by strong hydroelectric generation (~1000 MW average) supplemented by consistent wind output (~100 MW), eliminating the need for gas-fired generation. Binding constraints on the main transmission corridor (F_MAIN+RREG_0220) and Tasmanian inter-regional links (F_T+RREG_0050) suggest transmission limitations were constraining dispatch, with marginal values indicating these constraints were influencing price formation rather than fuel-related scarcity, resulting in the stable mid-$90s pricing despite 100% renewable conditions.
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.