Commodity Demand — TAS1: Sunday 19 July 2026

Tasmania spot price sits at $69.48/MWh at 06:25 AEST with demand at 1,232 MW, tracking up sharply through the morning ramp. Demand climbed from an overnight trough of 1,067 MW (04:35 AEST, price $10.17/MWh) to a morning peak of 1,398 MW at 07:55 AEST, where price hit $89.93/MWh — a clear demonstration of Tasmania's steep price-demand curve once load pushes past ~1,350 MW. Prices in the sub-1,100 MW overnight band traded mostly $10–35/MWh, while every push above 1,300 MW has coincided with prices in the $65–90/MWh range, indicating the region's hydro-dominant stack is being supplemented by the 124.62 MW GAS_OCGT unit at the margin during these periods.

The forecast trajectory points to a much sharper peak today. AEMO's price forecast has overnight troughs bottoming near $21–30/MWh between 03:00–05:00 AEST (aligning with load windows flagged at $26–32/MWh, low-risk for flexible load), before a steep morning ramp lifts forecast RRP to $95.44/MWh by 07:00 AEST and a sustained peak band of $97–99/MWh from 07:30 through to 10:30 AEST. This is materially higher than this morning's realised peak, suggesting tighter conditions are expected in tomorrow's equivalent window — likely a combination of cold-weather heating demand (current heating demand index 10.1, temperatures forecast 7.3–14.7°C with 97% cloud cover) and minimal wind/solar contribution (avg wind potential just 1%, solar potential 0%).

Demand-side risk factors are limited but present: TAS1 carried an Actual LOR1 reserve condition on 13 July (capacity reserve requirement 568 MW vs 541 MW available), and multiple lightning-related contingency reclassifications on the Gordon-Chapel St and Farrell-Reece 220 kV lines have occurred over the past week, tightening network constraints intermittently. With hydro generation at 1,170 MW and wind at just 184 MW in the latest mix, renewable penetration sits at 91.58% and carbon intensity at 0.0548 tCO2/MWh — but the price signal today confirms that even with high renewable share, tight morning-peak capacity and