commodity demand tas — TAS1

Tasmania's spot price sits at $72.60/MWh with demand at 1,009.6 MW at 06:30 AEST, a level that is climbing out of the overnight trough. The day's demand profile shows a clear and now-familiar pattern: demand troughed at around 916–934 MW in the early hours of this morning (AEST), where prices briefly went negative (reaching -$11.98/MWh between 13:35–14:00 UTC, equivalent to roughly 01:35 AEST) before recovering sharply as demand lifted through the 06:00 AEST mark. The price-demand relationship has been tightly correlated across the day — every sustained push above 1,100 MW has coincided with the spot price pinning at or near $88.20/MWh, which appears to be a binding constraint ceiling driven by network conditions rather than pure demand pressure alone.

Today's demand peak occurred around 08:05–08:15 AEST at approximately 1,249–1,263 MW, with prices holding at $88.20–$89.29/MWh through that window. Since that peak, demand has steadily unwound — tracking from around 1,240 MW at 18:00 AEST back to the current 1,009.6 MW — and prices have followed, easing from the $88.20 ceiling to the low $70s/MWh range. Saturday demand is now on a gentle upward drift through the morning, and forecasts for the 07:00 AEST half-hour (21:00 UTC) point to $88.24/MWh, indicating the market is pricing in demand returning toward the 1,100+ MW zone that repeatedly triggered that price ceiling today.

The network notice context is material to today's price sensitivity. AEMO issued multiple contingency reclassifications across TAS1 transmission lines throughout the day due to lightning activity — including the Farrell–Reece 220 kV pair (which actually tripped at 02:46 AEST, triggering the F-T-FARE_N-2 constraint set and restricting the Basslink T-V-MNSP1 interconnector), the Farrell–John Butters and Farrell–Rosebery–Newton–Queenstown lines, and the Burnie–Port Latta–Smithton 110 kV lines. The Farrell–Reece constraint set was active for multiple hours and constrains Basslink export capacity, which tightens the supply-demand balance within TAS1 and directly amplifies price sensitivity when demand crosses the ~1,100 MW threshold. The most recent Burnie–Smithton reclassification was cancelled at 06:04 AEST, and the Farrell–John Butters reclassification remains active — traders should note this line stays in play as a constraint risk if further lightning develops through Saturday.

The forecast price path for the next few half-hours sits at $73–$88/MWh, consistent with demand rebuilding through Saturday morning. The overnight low-price window (20:24/MWh forecast at 13:00–14:00 AEST) represents the clearest demand-shifting opportunity for flexible loads ahead of the next morning peak, where demand is likely to again test the 1,100–1,200 MW band that has consistently driven prices to the $88.20 ceiling. The Farrell–John Butters credible contingency r