Interconnector Watch: Sunday 14 June 2026

Six interconnectors are active across the NEM at 06:30 AEST, with no binding constraints reported in the current dispatch interval. Flow patterns are broadly consistent with regional price differentials, though spreads are relatively contained — NSW1 sits highest at $88.88/MWh against TAS1's low of $70.24/MWh, a NEM-wide spread of just $18.64/MWh.

QNI (NSW1-QLD1) carries the largest flow at 720.8 MW northbound from NSW into QLD, running at 69% of its import limit of 1,042.59 MW. With QLD at $80.17/MWh and NSW at $88.88/MWh, this north-to-south price gradient is slightly inverted relative to the flow direction, suggesting dispatch is being shaped by factors beyond spot price arbitrage — likely generation dispatch patterns or network security requirements in QLD. The active AEMO market notice for constraint set CA_BRIS_593C7214 on Directlink (N-Q-MNSP1), invoked from 10 June and still active, confirms AEMO is managing power system security in the QLD region. Directlink itself carries only 33 MW northbound, operating at 30% of its 108.8 MW import limit — well below capacity and non-binding.

VIC1-NSW1 (VIC-NSW interconnector) is flowing 301.55 MW from VIC into NSW, utilising 27% of its 1,133.7 MW export limit. This aligns with VIC being $6.85/MWh cheaper than NSW, with the flow moving from the lower-priced to higher-priced region as expected. Heywood (V-SA) is exporting 387.5 MW from VIC into SA, at 74% of its 522.05 MW import limit — the highest utilisation rate across the NEM today — consistent with SA's $70.96/MWh price sitting $11.07/MWh below VIC. Both Basslink (T-V-MNSP1) and Murraylink (V-S-MNSP1) are at zero flow. Basslink's outage is directly linked to the ongoing APD A2 500/220 kV transformer outage in VIC invoked 10 June (constraint set F-I_ML_APD_LOAD), which remains active. The Kerang–Koorangie 220 kV line outage from 9 June, affecting constraint set V-KGKO, nominally covers VIC1-NSW1, V-SA, T-V-MNSP1, and Murraylink on its left-hand side — this network reduction is likely a contributor to Basslink and Murraylink sitting at zero, and traders should monitor NOS for any changes to transfer limits on those corridors ahead of evening demand.

No losses data is populated in the current dataset. The overall picture is a well-supplied, low-spread NEM with Heywood the most utilised corridor and two VIC-adjacent network outages — the APD transformer and Kerang–Koorangie line — continuing to shape transfer limits into the week.