Tasmania achieved 100% renewable generation during the period around 09:35–10:00 AEST on 29 April 2026, with the generation mix dominated by hydro (~1,255 MW combined) and supplemented by wind (~117 MW combined). Spot prices remained stable and relatively modest at $106.26/MWh throughout all observed dispatch intervals, indicating a well-supplied and balanced market despite the fully renewable operating state.
Tasmania's 100% renewable outcome is largely structural, given the region's exceptional endowment of dispatchable hydro capacity, which provides reliable and controllable output irrespective of weather conditions — unlike intermittent renewables such as solar or wind. The absence of any gas OCGT dispatch confirms that hydro alone, complemented by wind generation, was sufficient to meet local demand, with no fossil fuel backup required. The binding constraint F_MAIN+LREG_0210, relating to lower regulation FCAS on the Basslink interconnector, was consistently active with modest marginal values (declining from ~$4.94 to ~$3.35), suggesting that interconnector flow management and frequency regulation obligations were mildly influencing dispatch decisions without materially distorting energy prices.
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.