Commodity Demand — NSW1: Monday 25 May 2026
NSW spot price sits at $120.90/MWh at 06:25 AEST with demand at 7,796 MW and climbing. The price-demand relationship across today's data is sharply illustrated by the morning peak: as demand pushed from around 7,700 MW at 03:30 AEST through to a session high of approximately 9,582 MW at 07:40 AEST, prices tracked upward into the $130–$138/MWh range before easing back as demand retreated through the mid-morning. The afternoon trough was equally pronounced — demand fell to a session low of around 6,438 MW between 17:30 and 18:00 AEST, coinciding with spot prices dropping to the mid-$60s to low-$70s/MWh range, demonstrating the tight elastic relationship between load volume and marginal pricing in NSW today.
Demand is now on its characteristic winter evening ramp. From the 18:00 AEST trough of roughly 6,491 MW, load has risen steadily through the 19:00s and 20:00s, reaching 7,796 MW at the latest interval. The pricing response is direct: the 19:55 AEST interval printed $109.81/MWh on 7,224 MW of demand, and by 20:15 AEST the market was clearing at $121.50/MWh on 7,637 MW. The most recent spike to $133.67/MWh at 20:20 AEST on 7,651 MW signals the market is already pricing in tighter supply conditions as the evening ramp progresses. At 15.2°C with 100% cloud cover and a heating demand score of 2.8, residential space heating load is sustaining this demand build into the evening.
Forward price forecasts for tonight confirm sustained elevation. The 07:00 AEST (21:00 UTC) interval is forecast at $121.95/MWh in the most recent pre-dispatch run, with forecasts for 07:30 AEST (21:30 UTC) ranging $125.78–$138/MWh across recent dispatch cycles — reflecting genuine uncertainty about the demand peak magnitude. The consistent upward revision of 21:30 AEST forecasts across the afternoon (from $120/MWh at 18:30 UTC through to $138/MWh by 19:31 UTC before partial pullback) indicates the market has been progressively repricing evening peak risk as the demand trajectory firmed. Traders should note the Koorangie–Wemen 220kV line outage (constraint set V-KOWE) remains active, constraining the VIC1–NSW1 interconnector and limiting NSW's ability to draw on Victorian generation to soften peak pricing.
The demand outlook for the remainder of today points to price staying above $120/MWh through the 07:00–08:00 AEST window before easing as demand rolls off its evening peak, with load windows for 08:30 AEST (23:30 UTC) and beyond forecast in the $84–$103/MWh band. The EMMS system transfer scheduled for 08:00–09:00 AEST (26 May, 18:00–19:00 UTC) may cause intermittent pre-dispatch data delays during that window — participants should account for potential information gaps when managing positions around the overnight demand descent.