Commodity Demand — VIC1: Sunday 21 June 2026

Victoria is currently sitting at $146.23/MWh with demand at 6,383.87 MW as of 06:25 AEST, and the trajectory is sharply upward. Demand has climbed roughly 1,480 MW since the overnight trough of around 4,550 MW recorded near 02:00 AEST, compressing that rise into approximately four and a half hours of sustained morning ramp. The price response to this demand escalation has been pronounced: spot was printing in the low-to-mid $50s/MWh through the overnight trough, breached $110/MWh as demand crossed 5,700 MW around 06:00 AEST, and is now touching $146/MWh as load approaches 6,400 MW. That translates to a price sensitivity of roughly $15–20/MWh for every 300–400 MW increment of demand added during the morning ramp — a relationship consistent with thermal capacity being progressively drawn into dispatch on the supply stack.

Today's forecast demand profile is significantly more concerning than this morning's ramp alone suggests. AEMO's dispatch forecasts point to prices escalating sharply through the evening, with the 08:00 AEST half-hour (22:00 UTC) forecast at $511/MWh and the 08:30 AEST interval peaking at $618/MWh. The morning peak window between 07:30–09:00 AEST carries forecasts of $531–$654/MWh, indicating the market anticipates demand pressing hard against available capacity during both the morning and evening peaks. Note that AEMO has flagged several intervals from 06:10–06:35 AEST as subject to review for manifestly incorrect inputs under NER clause 3.9.2B, so prices in that window may be revised — traders should monitor confirmation notices before settling positions.

Weather is amplifying demand-side pressure. Melbourne's current temperature sits at 7.1°C with 99% cloud cover and a heating demand index of 10.9, effectively eliminating solar contribution (0.07 MW currently dispatched) and suppressing wind to 11.24 MW. The forecast high of 12.9°C today offers no meaningful cooling relief, and the week ahead maintains minimums in the 5–8°C range with persistent cloud cover, keeping heating load structurally elevated across the outlook period. With gas OCGT currently dispatching 764 MW to support brown coal's 4,321 MW baseload at a grid stress score of 62.8, the margin for absorbing further demand spikes without price escalation is narrow. The cheapest load windows the market currently signals are between 13:30–15:30 AEST ($119–$136/MWh forecast), well below the evening peak exposure above $600/MWh — demand-side participants with flexibility should act accordingly.