Commodity Demand — NSW1: Saturday 5 September 2026
NSW demand sits at 6,263 MW at 06:30 AEST, with spot price at $75.41/MWh, up from a $57.39/MWh evening peak two days prior. The overnight trough saw demand collapse to 4,464 MW around 12:20 AEST, dragging prices deeply negative to -$10.55/MWh as rooftop and grid-scale renewables outpaced underlying load. The subsequent morning ramp is the defining feature of today's price action: demand climbed from 4,806 MW at 10:40 AEST to over 8,000 MW by 17:55 AEST, a swing of roughly 3,200 MW in seven hours, and price responded in lockstep, jumping from negative territory to a sustained $64-71/MWh band through the middle of the day.
The price-demand relationship today is tight and directional. Every material demand step-change has produced a corresponding price move: the 04:35 AEST transition from -$6.39/MWh to $42.08/MWh coincided with demand crossing 6,100 MW, and the plateau at 7,600-8,100 MW between 06:00 and 09:55 AEST held prices firmly in the $64-71/MWh range. As demand eased back through the afternoon — declining from 8,096 MW at 08:25 AEST to 6,000 MW by 18:00 AEST — prices softened correspondingly into the $42-57/MWh band, before evening demand picked up again to 6,263 MW alongside prices lifting to $75-89/MWh through the 20:00-20:30 AEST window.
Forecast data points to a stronger price response tomorrow morning than today's ramp delivered. AEMO's forward curve shows prices climbing from -$6.50/MWh at 02:00 AEST through to $82.45/MWh by 07:00 AEST and peaking near $111.98/MWh at 11:00 AEST, implying the market is pricing a steeper demand-driven tightening than what eventuated this morning. Wind generation at 1,471 MW and black coal at 3,993 MW are currently the largest contributors to supply, with renewable penetration at 31.95% and carbon intensity at 0.597 tCO2/MWh as the evening ramp draws on firmer sources. Weather outlook shows solar potential rising to 30.6% average tomorrow with light cloud cover, which should support midday price relief similar to today's pattern, though the extreme forecast peak near $112/MWh late morning suggests traders should watch for tighter reserve margins or the SA voltage-related intervention risk flagged in market notices spilling into interconnector flows.