commodity demand tas — TAS1

Tasmania's spot price sits at $50.20/MWh with demand at 1,040 MW as of 06:35 AEST — a notable softening from the $85–$95/MWh range that dominated during this morning's demand peak of 1,141 MW (around 18:45–19:45 AEST). The price-demand relationship across today's trading history is clear: every sustained demand push above 1,050 MW attracted prices clustering at $86–$96/MWh, while the overnight trough of ~860–900 MW in the mid-afternoon (around 01:00–03:30 AEST) corresponded with prices stepping down to the $58–$75/MWh band. Two brief negative price intervals at -$12.96/MWh and -$11.96/MWh appeared around 05:00 AEST when demand dipped below 900 MW, reflecting surplus generation conditions at that point in the dispatch cycle.

Demand is now rising from its post-peak base, tracking the typical Friday evening ramp. The current 1,040 MW level sits in a transitional pricing zone — below the threshold where prices consistently clear above $85/MWh but above the softer overnight range. Forecast data for the 07:00–08:30 AEST window (10:30–11:00 UTC) points to forecast RRPs consolidating in the $50–$52/MWh band, suggesting the market does not anticipate a return to high-demand pricing in the near term. Overnight load windows from 11:30 AEST onwards show forecast prices predominantly in the $20–$50/MWh range, with multiple "excellent" quality windows at $18–$22/MWh in the early hours of Saturday — consistent with demand falling back toward the 900–950 MW overnight trough.

One network factor warrants attention: a lightning-related contingency reclassification for the Farrell–John Butters and Farrell–Rosebery–Newton–Queenstown lines was active overnight before cancellation at 04:09 AEST this morning (notice 140983/140985). The Sheffield–George Town 220 kV lines were also temporarily reclassified as a credible contingency, invoking the T-GTSH_N-2 constraint set, which directly binds the Basslink interconnector (T-V-MNSP1). This would have contributed to the elevated and volatile pricing between $85–$95/MWh seen during morning peak demand, as interconnector export capacity was constrained at the critical time. All TAS1 contingency reclassifications are now cancelled, removing that transmission constraint from active dispatch.

Generation is running at 464 MW hydro and 240 MW wind, fully covering current demand without gas OCGT contribution. With grid stress scored at 72.2 and the constraint environment cleared, prices through the remainder of Friday and into Saturday morning are expected to track demand closely in the $50–$75/MWh corridor, stepping lower as overnight demand retreats — barring any renewed transmission events or unexpected generation outages.