Tasmania experienced high renewable penetration of 91.7% during the evening period of 13 July 2026, driven by combined hydro and wind generation totalling approximately 1,376–1,846 MW. Regional reference prices remained at or near the market floor of $0.09/MWh for four consecutive intervals before rising marginally to $0.12/MWh, reflecting abundant renewable supply.
The low and stable pricing is consistent with high renewable output exceeding regional demand, creating downward pressure on wholesale rates typical of high-penetration renewables periods. Multiple binding constraints with significant marginal values ($1.92–$2.46/MWh) indicate that network or system security constraints—rather than fuel scarcity—were the active price-setting mechanisms, suggesting network limitations restricted further renewable export or dispatch flexibility rather than generation adequacy.
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.