Commodity Demand — QLD1: Friday 12 June 2026

Queensland spot price sits at $53.75/MWh with demand at 5,940 MW as of 06:30 AEST, reflecting the early-morning Saturday trough following overnight demand erosion from a peak of ~7,700 MW during yesterday's morning ramp. The price-demand relationship across the past 24 hours is clear: demand above 7,000 MW consistently pushed prices into the $76–$96/MWh band during the 06:00–09:00 AEST morning peak, while the overnight nadir around 11:00–12:00 AEST (UTC 01:00–02:00) saw demand compress to ~4,870 MW with prices floor-hugging near $23–$40/MWh. Price sensitivity sharpens materially above 7,000 MW, with the 95.91/MWh print at 06:55 AEST coinciding with 7,410 MW — a clear marginal cost inflection as higher-cost plant is dispatched into the stack.

Today being a Saturday, demand is tracking ~800–1,000 MW below equivalent weekday morning levels at this hour, which explains the current $53.75/MWh price relative to the $80–$95/MWh range seen at this same time yesterday. The forecast demand trajectory for today points to the familiar winter morning ramp structure: prices are forecast to escalate sharply from 16:30 AEST (06:30 UTC) onward, reaching $76–$89/MWh through the 07:00–11:30 AEST window as heating loads build into the cooler morning with a current temperature of 14.2°C and a heating demand index of 3.8. The forecast ceiling sits around $89/MWh at 08:00 AEST, sustained through midday before easing into the $72–$77/MWh range from 14:00 AEST as demand rolls off the daily peak.

Overnight price behaviour warrants attention for flexible load operators. The forecast shows prices collapsing through near-zero to negative territory between 10:00–11:30 AEST (00:00–01:30 UTC) — forecasts of -$1.92/MWh at 10:30 and 11:00 AEST — before recovering to $39–$54/MWh by 14:30–15:30 AEST as the morning ramp commences. This overnight trough aligns structurally with the pattern observed last night, when prices hit $10.10/MWh at 07:55 AEST before recovering. The generation mix at the current interval — black coal at 4,179 MW, wind at 1,235 MW, gas OCGT at 284 MW, hydro at 116 MW, and battery discharge at 110 MW — reflects the baseload-heavy overnight dispatch stack that underpins the price floor pressure during low-demand windows.

One active market notice is relevant to today's price outlook: AEMO invoked constraint set CA_BRIS_593C7214 on the N-Q-MNSP1 interconnector from 08:30 AEST on 11 June to manage power system security in Queensland, and this remains in force. Any binding constraint on northward flows via that interconnector limits QLD's ability to export surplus during overnight low-demand periods, which could amplify negative price outcomes if overnight wind output is sustained. Traders positioning for the