Interconnector Watch: Tuesday 4 August 2026

Heywood (V-SA) is the sole binding interconnector this morning, flowing 547 MW from VIC into SA against an export limit of 558.16 MW - 98% utilised with only 11 MW of headroom. This constraint is holding the SA1-VIC1 spread at $14.67/MWh ($130.44 vs $115.77), with SA price support persisting because the network can't move enough low-cost Victorian generation south to fully close the gap. Mur