Commodity Demand — VIC1: Sunday 31 May 2026

Victoria is currently sitting at 5,735 MW with a spot price of $69.95/MWh at 06:25 AEST, and demand is rising sharply — up from 5,273 MW just 25 minutes ago at 06:00 AEST. This morning ramp is tracking the classic winter weekday pattern, with today's temperature sitting at 7.2°C and 10.8 units of heating demand driving residential and commercial load. The price response to this demand climb is direct and steep: as demand crossed 5,500 MW around 06:10 AEST, price broke above $34/MWh, and the acceleration through 5,700 MW has pushed it to $70/MWh. The generation mix shows brown coal supplying 4,394 MW alongside 1,154 MW of wind, with solar contributing nothing overnight — a pattern that concentrates marginal cost pressure on thermal capacity as morning load surges.

The demand trajectory through this morning's history illustrates the price-demand relationship clearly. Overnight demand troughed near 4,128 MW between 12:00–02:00 AEST, when prices ran negative (as low as -$2.29/MWh) as supply exceeded metered load. As demand climbed back through the 05:00–06:00 AEST hour — adding roughly 650 MW in 30 minutes — prices moved from flat to $57/MWh, then accelerated further. The sharpest price jumps occur not at the demand peak itself but during the ramp rate, when the market is dispatching increasingly expensive capacity to meet the rate of change. At 5,735 MW, Victoria is still approximately 1,200 MW below the day's likely peak, meaning further upward price pressure is the central case for the next 90–120 minutes.

Forecast pricing for the 07:00 AEST half-hour (21:00 UTC) is converging around $70/MWh across recent pre-dispatch runs, with the 21:30 UTC (07:30 AEST) half-hour forecast at $92.27/MWh in the most recent run — up materially from earlier estimates of $65–$70/MWh as actual demand is tracking above earlier forecasts. The 07:00–09:30 AEST window is the key risk period: yesterday's equivalent demand reached 6,878–7,008 MW with prices between $81–$107/MWh, and today's weather — maximum of 11.9°C with 92% cloud cover eliminating solar — provides no demand relief through the late morning. Sustainability managers with flexible heating loads have a narrow window before the morning peak embeds; load windows from 09:30 AEST onward show forecast prices dropping to $18–$26/MWh as the morning peak subsides, offering a meaningful cost differential versus the next 90 minutes.

One market notice warrants attention for Victoria-adjacent context: AEMO directed Quarantine PS Unit 5 in SA (subsequently cancelled at 23:15 AEST last night), and the active SA direction under Market Notice 144170 continues as an intervention event. While intervention pricing does not apply to this event, it signals tightness on the V-SA interconnector that can reduce Victorian export flexibility and subtly tighten the Victorian dispatch stack during high-demand periods. Traders managing VIC1 exposure through the 07:00–09:00 AEST window should treat the $92/M