commodity demand qld — QLD1
Queensland spot price sits at -$4.17/MWh with demand at 5,352 MW as of 18:20 AEST — deep in the solar suppression window where rooftop and utility PV generation is overwhelming flat Sunday load. The negative price signal has been persistent since approximately 17:00 AEST, with the grid recording sub-zero prices across most of the past 90 minutes as demand slides from the overnight range of 5,800–5,900 MW down toward today's mid-morning trough. The price-demand relationship is stark in today's data: prices tracked $48–$54/MWh when demand held in the 5,600–5,750 MW band through the pre-dawn period, then collapsed toward zero and negative territory as demand fell below 5,600 MW and solar generation ramped from around 16:40 AEST onward.
The demand trajectory from here follows a predictable Sunday arc. Load is currently near its daytime minimum and will begin climbing through mid-morning as residential activity picks up and solar output starts to ramp more aggressively — but that solar ramp will continue suppressing net demand and holding prices negative or near-zero through approximately 21:00–22:00 AEST (11:00–12:00 local solar peak). The generation mix snapshot at 18:00 AEST shows black coal at 1,870 MW providing the baseload floor, with solar contributing only 182 MW — this figure will grow substantially as the morning progresses, pushing net demand lower and extending the negative price window.
The afternoon demand recovery is the key price event to watch today. Based on the pattern visible in the price history, as solar output fades from approximately 01:00–02:00 AEST and demand climbs through the 6,000–6,500 MW range into the early evening, prices historically snap back sharply — the data shows 50–65 $/MWh across the evening peak window. Today's 66% cloud cover and solar potential score of 7.9/100 suggest solar generation will be constrained relative to a clear day, which could compress the negative price window and pull forward the afternoon price recovery. Grid stress sits at 66.1/100, indicating the transition from surplus to deficit conditions this afternoon warrants close monitoring for price volatility at the solar cliff edge.