Monday's NEM session opened softly across the southern regions before a textbook winter evening ramp tightened conditions through the 17:30–19:30 AEST window. Queensland led the price action, with spot touching $158.92/MWh during the evening peak and averaging $71/MWh over 24 hours — the highest NEM regional average on the day. Victoria and South Australia both recorded multiple brief negative-price intervals during the afternoon as supply ran ahead of demand, before recovering sharply into the evening. The VIC1–NSW1 interconnector was saturated at its export limit of 1,145.58 MW flowing north into NSW, signalling active constraint management. Today, watch Queensland's morning demand ramp and any continuation of interconnector binding on the VIC1–NSW1 corridor.
Tasmania reached 100% renewable penetration at 20:05–20:35 AEST on 2 June, with hydroelectric generation running at 650–787 MW and wind contributing 21–41 MW to cover all regional load. TAS1 averaged $83/MWh — the second-highest NEM regional average — with prices settling around $80.20/MWh at the 06:30 AEST snapshot. Carbon intensity was recorded at 0.00 tCO2/MWh during the renewable saturation window. Meanwhile, South Australia recorded 96% renewable penetration in early morning, driven by 1,693 MW of wind and 504 MW of solar — coinciding with four separate negative-price events across the day, with prices briefly reaching as low as –$4/MWh.
Western Australia's wholesale market (WA1) was the highest-priced jurisdiction in the country over the past 24 hours, with a day average of $112/MWh and an intraday peak of $144/MWh. No specific event data is available in today's feed to explain the elevation, but the spread versus southern NEM regions — particularly VIC1 at $16/MWh average — is notable. Energy managers with WA exposure should review interval data directly for the underlying driver.