AEMO issued a direction to AGL SA Generation at Torrens Island on 22 September. The market operator identified a foreseeable circumstance requiring an intervention in the South Australian region from 09:30 on 23 September. AEMO updated its medium-term PASA to remove a low reserve condition previously forecast for Victoria in July 2028. The medium-term PASA results published on 22 September identified no low reserve conditions across the market.
Lightsource bp referred an 800MWh hybrid wind, solar and battery facility to the federal government for assessment under the EPBC Act. The Australian Government concluded consultations on a proposed framework to establish a domestic low-carbon liquid fuels industry. The Superpower Institute stated the current policy risks failing its security and emissions goals without stronger levers to reduce reliance on imported diesel and crude.
The NEM average spot price reached $67.9/MWh, which was $21.8/MWh above the seven-day average. Tasmania recorded the highest regional price of $320/MWh at 06:20. Queensland experienced 1.5 hours of negative prices, while South Australia and Victoria each recorded 0.8 hours. New South Wales reached a demand peak of 9,482 MW at 18:25. Renewables generated 48.2 per cent of energy with an instantaneous peak of 73.8 per cent at 11:00, while batteries discharged 17,942 MWh.
Natural gas prices increased 11.1 per cent to US$3.15/mmbtu. The AER approved the Jemena 2026 to 2031 electricity pricing and services plan. The regulator has open determinations for the Transgrid 2023 to 2028 period and the AusNet Services 2027 to 2032 period. AEMO is seeking submissions on its settlements residue methodology discussion paper by 29 September. Submissions for the AEMO power system modelling strategy close on 14 October. The AEMO consultation on changes to the transportation service point register closes on 21 October.