Tasmania achieved 100% renewable energy generation on 24 May 2026 during the evening peak, with hydro and wind sources completely replacing dispatchable generation. The region's spot prices remained relatively stable at approximately $103/MWh for most of the period, with a brief spike to $149.10/MWh at 20:05, before normalising.
The high renewable penetration reflects Tasmania's abundant hydroelectric resources (approximately 2,200–2,400 MW across the period) combined with moderate wind generation (17–36 MW), eliminating the need for gas peaking plant. The transient price spike at 20:05 likely resulted from a rapid ramp requirement or constraint binding event (evidenced by the elevated marginal values on F_T+RREG_0050 at $50.20 and F_T+NIL_MG_R60 at $45.80), possibly reflecting network transmission constraints or frequency regulation requirements as renewable output fluctuated, though the system quickly stabilised as generation and demand rebalanced.
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.