A major binding constraint (T_BLINK_TV_NGZ) with an exceptionally high shadow price of $8.352 million occurred in TAS1 on 13 September 2026 at approximately 21:05–21:25, coinciding with regional electricity prices rising from $40.20 to $56.49/MWh before moderating. The constraint remained binding across multiple settlement intervals, suppressing transmission capability and inflating the spot price.
The binding constraint T_BLINK_TV_NGZ with a marginal value of $8.352 million indicates a severe physical limitation on power transfer, which directly restricted supply flexibility and forced price elevation to equilibrate demand. The generation mix at the time comprised substantial hydro (778–886 MW), moderate wind (233–310 MW), and gas (124–125 MW), suggesting that although renewable capacity was available, the binding constraint prevented efficient inter-regional or cross-region supply relief, thereby limiting the system's ability to moderate prices through normal dispatch mechanisms.
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.