Tasmania experienced 100% renewable penetration during the evening period of 8 June 2026, with generation entirely from hydro and wind sources totalling approximately 1,040–1,595 MW across the measured intervals. Regional reference prices remained relatively stable in the $79–$87/MWh range, with a modest upward spike to $87.22/MWh in the final settlement period.
The high renewable penetration reflects strong hydro availability (averaging ~616 MW) and sustained wind generation (averaging ~249 MW) during this period, with no reliance on thermal generation. Price support during this low-emissions interval appears linked to binding constraint F_TASCAP_RREG_0220 (marginal value $6.79–$7.78/MWh) and F_T+RREG_0050 (marginal value $3.75/MWh), suggesting supply-side limitations rather than demand-driven factors were constraining the market and sustaining the observed price floor.
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.