Commodity Demand — NSW1: Tuesday 18 August 2026
NSW demand sits at 8,843 MW at 06:25 AEST, with spot price at $64.05/MWh, up from a low-8,000s trough around 05:00 as the morning ramp gets underway. Overnight demand bottomed near 7,150-7,400 MW between 02:00 and 05:00 AEST, during which prices spent extended periods near zero and even briefly negative (-$1.38/MWh at 15:15 UTC / 01:15 AEST), reflecting strong wind output (over 1,100 MW) and minimal load. The current 06:25 reading confirms NSW is now firmly in the morning demand build, tracking roughly 1,700 MW above its overnight trough.
Price sensitivity to demand is pronounced through this ramp. Across yesterday's equivalent morning period, demand climbed from 8,120 MW to a peak of 10,493 MW between 07:45 and 08:15 AEST, and price responded sharply — jumping from the low $70s/MWh to a peak of $87.85/MWh as black coal (currently 5,576 MW) and battery output (600 MW) were called on to cover the steepening load. Every 500 MW of incremental demand through that window added roughly $5-10/MWh to spot price, consistent with the region moving up the supply stack as cheaper renewable output is exhausted.
AEMO's forecast trajectory points to a stronger price response later this morning: forecast RRP climbs from $65.51/MWh at 06:30 AEST to a peak of $94.64/MWh around 11:00 AEST, before easing back through the afternoon to the low $40s/MWh by 18:00 AEST. This shape mirrors yesterday's pattern, where midday demand held near 9,000-10,400 MW and prices sat in the $65-88/MWh band for several hours before demand tapered from 13:00 AEST onward, dragging prices down to the low $40s/MWh by mid-afternoon. Renewable penetration is currently 27.3%, with carbon intensity at 0.639 tCO2/MWh — both metrics likely to tighten further as demand peaks and thermal generation share increases.
No NSW-specific demand-side interventions are in force today; active market notices relate to SA voltage support directions and a Basslink transfer limitation, none of which materially affect NSW load-price dynamics. With today's forecast peak near 11:00 AEST at approximately $94.64/MWh, the risk skews toward prices testing $90-100/MWh if demand tracks above yesterday's comparable trajectory, particularly given a cooler start (9.1°C) that may extend heating-driven load beyond the typical morning shoulder.