South Australia (SA1) experienced high renewable energy penetration of 86.5% on 10 August 2026 during the 13:35–14:10 settlement period, driven predominantly by wind generation of approximately 773 MW. Regional reference prices (RRP) ranged from $63.70 to $82.25/MWh during this interval, with modest volatility reflecting the high renewable contribution.
The sustained high renewable penetration was primarily driven by strong wind generation supplying the bulk of SA1 demand, with minimal solar and battery output during the afternoon period. Binding constraint F_TASCAP_RREG_0220 consistently held marginal values of $4.96–$4.99/MWh across most settlement periods, indicating operational limits were active; constraint F_T+RREG_0050 also bound with a marginal value of $3.57/MWh, suggesting network or regional requirements were constraining dispatch and contributing to price formation alongside the renewable-rich generation stack.
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.