Tasmania achieved 100% renewable generation on 13 June 2026 between 20:05 and 20:35 UTC, with hydro and wind together supplying approximately 1,000 MW. Regional reference prices remained stable in the $66–73/MWh range during this period, indicating orderly market conditions despite the high renewable penetration.
The sustained 100% renewable output reflects strong hydro availability (610–650 MW) combined with moderate wind generation (350–372 MW), eliminating the need for dispatchable gas generation. Binding constraint F_T+NIL_MG_RECL_R6 exhibited variable marginal values ranging from $29.59 to $162,400/MWh across settlement intervals, indicating that a network or resource constraint was active and materially influencing dispatch efficiency during this period; the presence of this constraint alongside stable prices suggests the market was managing renewable surplus within existing transmission or system limits.
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.