Tasmania experienced 100% renewable energy penetration during the evening of 12 June 2026, with hydro and wind generation totalling approximately 1,898 MW across the region. Regional reference prices ranged from $66.51 to $74.96/MWh during this period, reflecting moderate wholesale electricity costs despite the high renewable contribution.
The high renewable penetration was driven by substantial concurrent hydro and wind generation, with hydro output consistently above 519 MW and wind generation between 343–389 MW, eliminating the need for dispatchable thermal generation. The binding constraint F_T+NIL_MG_RECL_R6 exhibited a notably elevated marginal value of $3,908.02, suggesting a significant network or operational limitation was constraining the market, which likely contributed to the elevated pricing despite abundant renewable supply.
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.