Commodity Demand — TAS1: Thursday 4 June 2026

Tasmania's spot price sits at $80.18/MWh with demand at 1,171 MW as of 06:30 AEST, tracking upward from an intraday trough of around 897 MW reached during the mid-afternoon period (02:25–03:30 AEST). That trough aligns precisely with the price floor, where the RRP holds at $80.10–$80.18/MWh — indicating the marginal dispatch stack is relatively flat at current demand levels and prices are not responsive to moderate demand swings within this range. The notable exception is the morning ramp between 15:10–17:00 AEST, where demand climbed from ~1,069 MW to ~1,124 MW and spot touched $96.91–$106.58/MWh, confirming that the stack steepens materially above approximately 1,120–1,140 MW.

Demand is now rising through the evening ramp, up from 897 MW at 03:25 AEST to 1,171 MW at present — a gain of roughly 274 MW in under three hours. The price response so far is muted, holding at $80.18/MWh, but the earlier morning peak reached 1,258 MW at $80.20/MWh and the overnight period saw demand sustain above 1,220 MW with prices oscillating between $80.20/MWh and $101.01/MWh, indicating that prices become volatile above roughly 1,230 MW. Tonight's evening peak is the key watch point: if demand pushes back toward the 1,240–1,260 MW range seen in the early hours of this morning, expect intermittent price spikes into the $86–$101/MWh band.

Forecast pricing for the next trading half-hours is anchored at $87.20–$87.22/MWh for the 07:00–07:30 AEST window, consistent with market expectations of a modest demand-driven step-up as the evening load builds. The temperature at 4.7°C with a heating demand index of 13.3 supports continued upward demand pressure through the evening peak, with today's forecast maximum of 13.1°C limiting any midday demand relief. There are no Tasmania-specific market notices in the data; the active notices all relate to NSW1 and VIC1 contingency reclassifications, which carry indirect interconnector implications but no direct TAS1 constraint invocations at this time.

The price outlook through today's peak is therefore a narrow base of $80–$87/MWh with spike risk to $90–$101/MWh if demand tests the 1,240 MW threshold during the 08:00–10:00 AEST window. Generation is currently 1,061 MW hydro and 234 MW wind with gas OCGT offline, providing adequate headroom at present demand but limited surge capacity without interconnector support or additional hydro dispatch.