NEM wholesale prices surged 35.4 per cent week-on-week to average $81.89/MWh, signalling deepening grid strain across the mainland. The price jump follows a weekend of operational stress. A simultaneous loss of control hit two mainland DC interconnectors for several hours on Saturday morning, highlighting transmission vulnerabilities. Further pressure is evident in Tasmania, where the Tamar Valley combined cycle gas plant marked over one month of continuous operation, according to WattClarity analysis, suggesting a sustained reliance on thermal firming.
This market volatility forms the backdrop for long-term supply questions. AEMO's latest forecast data confirms EnergyAustralia maintains a scheduled retirement date of 1 July 2028 for all four Yallourn units. The confirmation provides certainty but sharpens the focus on the pace of replacement capacity. The mid-2028 exit of the Victorian brown coal generator removes a significant baseload volume from a market already exhibiting signs of tightness during periods of system stress.
Meanwhile, new sources of demand are creating their own planning headaches. The timeline for connecting large industrial loads like data centres to the grid is becoming a critical bottleneck. Analysis in PV Magazine notes a data centre can be constructed in 18 to 24 months. Grid connection, however, can take significantly longer, creating a major misalignment between project development and network readiness. This gap threatens to slow the integration of large-scale electrification projects.
At the consumer level, the electric vehicle fleet continues to expand and evolve. The first shipments of Xpeng's G6 electric SUV have been spotted at the Port of Brisbane, signalling another new entrant into the competitive Australian market. Technology is also advancing, with Tesla launching vehicle-to-load capability on its premium Model Y vehicles in the United States. The feature, which allows the car to power external devices, is expected to eventually reach Australian models, adding another layer of complexity and opportunity for consumer energy resources.
Regulators are grappling with these converging pressures through a raft of market design reviews. AEMO has opened numerous consultations with September deadlines, seeking feedback on everything from real-time data provision to the dispatch of demand-side programs and capacity credit allocations. This intense period of regulatory activity underscores the urgent work underway to adapt the market's rules for a more volatile and distributed energy system.