Monday night into Tuesday morning was characterised by oversupply in the southern NEM, with VIC1 and SA1 recording multiple episodes of negative pricing — VIC1 touching −$11.74/MWh at 16:45 and SA1 −$11.48/MWh in the same window — while QLD1 held firm with an average of $78/MWh and a morning peak range of $111–$132/MWh. A notable binding constraint on the NSW1 network (N_QPSFB_L_7INV) reached a shadow price of $710,422/MWh in the early hours, though NSW1 spot prices remained modest at $67–$74/MWh during that period. Watch for the VIC1–NSW1 interconnector: it was binding at its 972.87 MW export ceiling at 06:30 AEST, which will continue to shape intraday pricing in both regions as demand lifts through the morning commercial ramp.
Tasmania — 100% renewable penetration. TAS1 achieved 100% renewable generation during the evening of 9 June, with wind and hydro combining for approximately 1,800 MW across the settlement period. Carbon intensity hit 0.00 tCO₂/MWh, with hydro at 389 MW and wind at 431 MW recorded at the 06:25 AEST snapshot. Despite the milestone, prices stayed measured — TAS1 averaged $79/MWh across the 24-hour period (max $139/MWh), indicating supply and demand remained broadly balanced.
WA1 was the highest-priced market in the country over the past 24 hours, averaging $115/MWh and peaking at $172/MWh — notably above all five NEM regions. No specific event data is available for WA1 in today's feed, so the underlying driver cannot be confirmed, but the price level warrants attention from WEM-exposed buyers and operators heading into the day.
LOR: AEMO's ST PASA shows no Lack of Reserve conditions forecast across the NEM in the next 48 hours. Gas: Hub prices diverged sharply — Adelaide STTM jumped from $4.02/GJ on 8 June to $7.