The NEM ran quietly overnight with VIC1 and SA1 both touching brief negative pricing in the early hours (02:20–02:25 AEST) before recovering quickly, while the afternoon period (17:15–17:25) brought a second round of near-zero and sub-zero intervals in both regions amid transient oversupply. TAS1 led on price, averaging $82/MWh across the 24-hour window with a max of $114/MWh, while VIC1 and SA1 averaged just $26/MWh and $24/MWh respectively. Into Monday, watch the VIC1–NSW1 interconnector: the Murraylink export flow hit its binding ceiling of 1,039 MW as of the 06:30 AEST interval, which is actively influencing price spread between the two regions. QLD1 spot was still elevated at $99.96/MWh at 06:30 AEST following a daily peak above $110/MWh earlier in the session.
TAS1 is the standout region in the past 24 hours. Tasmania recorded 100% renewable penetration during the evening of 8 June, with hydro and wind covering all generation across intervals totalling approximately 1,040–1,595 MW. Despite the clean-sheet generation mix, prices remained firm rather than collapsing — holding a tight band of $79–$87/MWh and finishing the final settlement interval at $87.22/MWh with demand at 1,213.74 MW. Carbon intensity logged at 0.00 tCO2/MWh in the 06:30 AEST interval. A reminder that renewable penetration records do not automatically translate to price softness when supply and demand are closely matched.
WA1 was the highest-priced market in the country over the past 24 hours — averaging $114/MWh and peaking at $173/MWh, well above every NEM region. The WEM continues to trade at a significant premium to the east