regional sa — SA1
SA1 spot is at -$1.03/MWh as of 06:30 AEST, continuing a sustained negative-to-near-zero price regime that has persisted through most of the overnight and early morning window. The 24-hour price history tells a clear story: prices ran hard between $100–$497/MWh during the pre-dawn period (approximately 14:00–16:30 AEST yesterday), then collapsed as solar penetration climbed through the morning. The deepest negatives hit -$200/MWh around 23:00–23:30 AEST yesterday at midday solar peak, with demand compressed to below 370 MW. Current demand of 1,647 MW reflects the morning ramp now underway.
The 06:00 AEST generation snapshot shows wind carrying 853.9 MW and gas CCGT contributing 82.7 MW, with solar at zero and gas OCGT offline. That wind-dominant mix at low demand explains the lingering negative price. The most recent carbon intensity reading (05:30 AEST, sourced from the 19:30 UTC interval) sits at 0.4004 tCO2/MWh with renewables at only 25.7% — a notable deterioration from the midday low of 0.0964 tCO2/MWh and 80.3% renewable penetration recorded around 19:30 AEST yesterday. The overnight shift back toward gas to meet baseload demand is reflected in both the rising intensity and the higher price floor across the 02:00–06:00 AEST window.
Predispatch forecasts are uniformly targeting $138/MWh for the 07:00 AEST half-hour, consistent across all recent forecast runs. This signals the market expects gas to be the marginal setter as demand climbs through the morning and wind output is insufficient to suppress prices. The transition from sub-zero to $138/MWh is already visible in the price history — the 06:30 interval at -$1.03/MWh will likely be among the last negatives before the ramp fully takes hold. Traders should note the prior day's pre-dawn spike to $497.50/MWh at approximately 16:15 AEST; a similar evening peak is plausible today given grid stress score of 60.5 and market conditions score of 37.5, both signalling elevated tension.
No active market notices are current for SA1. Renewable penetration score of 15 and price stability score of 30 both confirm this is a structurally volatile market window. Flexibility assets and demand response with exposure to spot should be positioned to capture the negative-price tail-end now and hedge against the $138+/MWh trajectory expected through 07:00–09:00 AEST as the morning peak develops.