South Australia (SA1) experienced high renewable energy penetration of 93.1%, driven predominantly by wind generation at 976.52 MW, with solar contributing 179.28 MW across the region. Regional spot prices remained relatively modest, ranging from $12.42 to $23.24/MWh across the five settlement periods shown, reflecting the abundant renewable supply.
The high renewable penetration was primarily supported by substantial wind output, which dominated the generation mix and suppressed marginal pricing. Multiple binding constraints with positive marginal values indicate network or system limitations were in effect, with constraint V_T_NIL_BL1 showing the highest marginal value at $16.02/MWh, suggesting transmission or operational constraints were restricting further renewable supply injection and supporting residual pricing above zero despite oversupply conditions.
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.