Commodity Demand — NSW1: Friday 18 September 2026
NSW spot price sits at $64.31/MWh as at 06:30 AEST, with demand at 6,797 MW — down sharply from the 8,600 MW peak reached mid-morning yesterday but still tracking the typical Saturday ramp. Overnight demand troughed near 4,090 MW around 02:40-02:45 AEST, coinciding with negative pricing (-$6.71/MWh), before climbing through the early morning as load returned. The current 6,797 MW reading reflects the tail end of last night's evening peak unwinding rather than this morning's ramp, which is just beginning.
The price-demand relationship in NSW is highly elastic today. Every 1,000-1,500 MW swing in demand is moving price by $60-90/MWh: demand below 4,500 MW overnight produced prices between -$7 and $2/MWh, while demand above 8,300 MW yesterday morning pushed price to $95-100/MWh. This steep sensitivity reflects thin marginal capacity once black coal (currently 4,216 MW) and wind (1,592 MW) are dispatched — gas peaking plant only shows 26.75 MW of OCGT online, indicating minimal flexible reserve is currently committed, so incremental demand has to be met by more expensive marginal units.
AEMO's forecast trajectory points to a firm price ramp through the morning: forecast RRP climbs from $57.39/MWh at 07:00 AEST to $82.90/MWh by 08:00, peaking near $90/MWh around midday (12:00-12:30 AEST) before easing to $76-84/MWh through the afternoon and evening. This mirrors yesterday's pattern, where demand crossed 8,000 MW near 07:15 AEST and price simultaneously broke through $88-100/MWh, holding in that band until early afternoon. Given today's milder forecast temperatures (14.2-26.8°C, minimal cooling or heating demand per the weather outlook), the midday peak is unlikely to be as demand-driven as a hot day — expect the price peak to be shaped more by solar ramp-down timing and coal/wind dispatch scheduling than by extreme load.
No NSW-specific demand-side notices are in effect. The active market notices concern SA voltage support directions (AGL Torrens Island) and a forecast SA minimum system load event from 11:30-14:30 AEST today — not directly relevant to NSW pricing, though the SA intervention risk warrants monitoring given interconnector flow effects on Victoria and, indirectly, NSW-Victoria trade. NSW carbon intensity currently sits at 0.593 tCO2/MWh with renewable penetration at 32.5%, tracking lower than the 65-70% renewable share achieved overnight when wind output dominated a smaller demand base.