Commodity Demand — TAS1: Monday 1 June 2026

Tasmania's spot price sits at $79.95/MWh with demand at 1,056.73 MW as of 06:30 AEST — well below today's intraday peak of 1,352.89 MW reached around 17:45 AEST, which coincided with prices climbing into the $97–$126/MWh range. The day's most acute price episode occurred between 18:05 and 18:30 AEST (08:05–08:30 UTC) when demand held in the 1,341–1,347 MW band and spot spiked to $190.21/MWh at its peak, before retreating sharply once demand eased below 1,325 MW. That price-to-demand relationship is instructive: Tasmania's market shows clear price step-changes around the 1,300 MW threshold, with sustained demand above that level consistently producing $97–$165/MWh outcomes, while demand in the 950–1,100 MW range has been pricing in the $70–$80/MWh corridor.

Demand bottomed at approximately 870–885 MW during the 02:10–02:30 AEST window (16:10–16:30 UTC), where prices compressed to $70.65–$71.76/MWh — the day's floor. The evening ramp that followed was gradual, rising from around 878 MW at 02:30 AEST through to the current 1,056.73 MW, with prices tracking commensurately from ~$70.65 to $79.95/MWh. Demand is now climbing again, up from 999 MW at 06:00 AEST and adding roughly 57 MW across the past 30 minutes. Generation at this interval is 812.12 MW hydro and 213.43 MW wind, with gas OCGT at zero, consistent with the pricing level sitting well below any peaker trigger point.

Forecasts for the next trading intervals (07:00–08:30 AEST) are pegged at $80.10–$81.18/MWh, indicating the market anticipates demand continuing to build through the morning but not yet approaching the 1,300 MW level that has historically pressured prices toward the $97+ band today. The weather context supports a sustained heating load: it is 8.8°C with 95% cloud cover and negligible solar and wind potential, meaning there is no embedded generation uplift to offset the demand ramp as households and businesses come online. Maximum temperature today is forecast at just 11.6°C under near-total cloud cover, which will maintain heating demand through the entire daylight period rather than providing the typical midday load moderation seen in warmer months.

The key price risk today is the late-afternoon/evening demand peak, which on today's pattern is likely to retest the 1,300–1,350 MW range from around 17:00–20:00 AEST. If that repeat occurs under continued low wind (wind potential forecast at zero today) and gas OCGT remains offline, the bid stack configuration that produced $97–$190/MWh outcomes this morning becomes the relevant reference for the evening session. Forecast prices for the 08:30 AEST (22:30 UTC) window and beyond are currently indicated at $80–$86/MWh, suggesting the market is not yet pricing in a significant evening spike, but the demand trajectory and weather profile make that interval worth watching closely.