Tasmania achieved 100% renewable electricity generation during the period 3–30 July 2026 (20:05–20:30 UTC), with hydro and wind sources providing approximately 1,285–1,571 MW combined output and gas generation offline. Regional reference prices (RRPs) remained moderate, ranging from $57.61 to $77.13/MWh across the six five-minute settlement intervals.
The sustained renewable penetration reflects strong hydro availability (712–801 MW) and consistent wind generation (468–493 MW) during this period. Binding constraints with marginal values of $3.67–$4.68/MWh, predominantly constraint F_T+RREG_0050 and one instance of F_TASCAP_RREG_0220, indicate that network or regional regulation limits rather than fuel scarcity were the principal price drivers, suggesting dispatch was constrained by transmission or system strength requirements rather than generation costs.
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.