Prices were broadly contained across the NEM overnight, with South Australia the notable outlier — SA1 averaged $111/MWh and spiked to $276/MWh during the early hours before normalising to around $96/MWh by 06:30 AEST. Morning demand ramps are now under way across all mainland regions: Victoria climbed 460 MW in a single hour to 5,259 MW, Queensland reached 6,551 MW, and Tasmania is tracking its classic morning ramp toward 1,156 MW. Watch the QNI interconnector today — it is fully loaded at its import limit of −717 MW, meaning any further tightening in Queensland could force prices to set independently of New South Wales.
Tasmania achieved 100% renewable penetration during the morning of 28 April, with the entire load covered by approximately 556 MW of hydro, 152–161 MW of wind, and a small rooftop PV contribution of 6.76 MW. No gas was dispatched. Spot prices held steady at around $106/MWh through the interval — a routine operational outcome given Tasmania's generation mix, but worth noting for carbon-intensity tracking. The region's 24-hour average settled at $97/MWh, with a session high of $156/MWh.
WA1 ran a tight range over the past 24 hours, averaging $132/MWh with a session high of $138/MWh — the narrowest high-low spread of any region in scope today. No major dispatch events are reported. The elevated average is consistent with WA1's recent baseline; no LOR conditions are flagged for the WEM in the 48-hour outlook.