Commodity Demand — QLD1: Thursday 10 September 2026

Queensland spot price sits at $87.73/MWh as of 06:30 AEST, with demand at 6,251 MW — up sharply from the overnight trough of 4,378 MW recorded around 12:25 AEST yesterday. The price-demand relationship is tight and non-linear: demand climbed from ~4,400 MW to over 7,500 MW through yesterday's morning ramp, and price responded by rising from sub-$50/MWh to a peak near $93/MWh as the system moved through the 7,000-7,500 MW band between 07:00 and 09:00 AEST. Each ~500 MW increment above 6,500 MW is adding roughly $10-15/MWh to spot price on current data, indicating the region is now working through mid-merit gas and battery dispatch to meet load.

The forecast trajectory released at 20:01 AEST points to a sharp overnight price collapse before today's demand ramp reasserts itself. Forecast RRP drops to $21.96/MWh by 09:00 AEST (23:00 UTC) and further to near-zero and negative-adjacent levels ($0-$7/MWh) between 10:00 AEST and 14:30 AEST, consistent with the low-demand overnight trough. From there, forecast prices climb steadily: $54.73/MWh by 15:30 AEST, $72.50/MWh by 17:00 AEST, breaking $100/MWh by 18:00 AEST, and peaking around $112.58/MWh at 22:30 AEST — the sharpest forecast price point of the day. This aligns with the typical evening demand peak as solar generation (currently only 101 MW, reflecting pre-dawn conditions) drops away and the system leans on coal (5,019 MW), wind (1,194 MW), and battery output (847 MW) to cover the gap.

Demand-side signals from market notices are otherwise quiet for Queensland — no LOR conditions, directions, or non-conformance declarations affecting QLD1 in the current notice set (SA and VIC dominate intervention activity). The identified load-shifting windows confirm the price asymmetry: shifting flexible load into the 02:00-05:30 AEST window captures prices as low as $1-14/MWh versus the evening peak, a potential saving of $90-112/MWh. Grid stress reads 65.4 on our composite score, reflecting the rapid demand ramp rather than any supply shortfall, with renewable penetration at 29.68% and carbon intensity at 0.6149 tCO2/MWh as the coal-wind-battery mix responds to the morning load build.

For traders, the key takeaway is that today's price outlook is demand-shape driven, not supply-constrained: expect a soft midday trough (potentially sub-$10/MWh around 12:00-14:00 AEST) followed by a firm evening peak approaching $110/MWh as demand climbs into the 7,000+ MW band again after dark.