Tasmania achieved 100% renewable energy penetration during the evening of 15 June 2026, with hydro generation totalling approximately 1,986 MW and wind contributing around 79 MW across the observation period. Regional electricity prices remained relatively stable in the range of $68–$70/MWh despite the high renewable contribution.
The sustained 100% renewable generation was supported by strong hydro availability, which consistently provided the bulk of Tasmania's supply. The binding constraint F_T+RREG_0050 remained active with marginal values between $3.04–$3.06/MWh throughout the period, indicating this constraint was limiting the system and contributing to price floor support; without this constraint's effect, prices would have declined further given the minimal fuel costs of renewable generation.
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.