Origin Energy has begun commercial operations at its 300 MW / 650 MWh Mortlake battery in Victoria, marking a significant injection of firming capacity into a volatile market. The commissioning comes as NEM wholesale spot prices surged 72.1 per cent week-on-week to average $100.05/MWh, underscoring the acute need for storage to manage price extremes and integrate intermittent renewable generation.
The market entry of new storage assets is accelerating across the grid. In Queensland, CS Energy’s 100 MW / 200 MWh Chinchilla Battery is now fully operational after completing its final commissioning stage ahead of schedule. Further down the pipeline, Edify Energy has reached financial close on its 300 MW / 1,200 MWh solar-plus-storage projects near Townsville. The project pipeline was also bolstered in New South Wales, where BW ESS acquired the development rights for the 250 MW / 1 GWh Yanco battery project from ACEnergy.
Distribution networks are also entering the utility-scale storage market to manage local constraints. Ausgrid has commenced construction on its inaugural 10 MW / 20 MWh grid-scale battery in Newcastle, a first for the network service provider. The Steel River project is designed to enhance local grid stability and reliability, signalling a strategic shift for distributors in actively managing their networks with storage assets.
But deploying storage is only half the battle; operating it efficiently is proving harder. New analysis from The Energy Co highlights that inaccurate operational forecasting is causing batteries to miss peak price windows. This inefficiency not only curtails profitability for asset owners but could necessitate a larger, more expensive fleet of storage to achieve the same level of grid support.
Meanwhile, securing renewable supply for the NEM’s largest industrial loads faces commercial headwinds. Following yesterday’s announcement of a 3 GW procurement effort for the Tomago aluminium smelter, Clean Energy Finance Corporation CEO Ian Learmonth confirmed that specific funding arrangements for the required new wind and solar farms are still unresolved. The comments highlight the complex financial engineering required to decarbonise major industrial energy users.
A Victorian parliamentary inquiry has identified urgent policy failures affecting apartment residents' access to renewables. The report flagged the potential for plug-in balcony solar and building-integrated PV to reduce costs for occupants of high-rise buildings, who currently face significant barriers to participating in the energy transition.
Looking ahead, new S-curve modelling suggests renewables could displace all Australian coal generation by 2032, indicating the technological transition is achievable. However, the cancellation of a 2.1 GW green hydrogen project in Germany due to planning uncertainty serves as a cautionary tale on policy risk. A new source of intense demand is also emerging, with a 1 GW deal in the US to deploy multi-day storage for AI infrastructure, signalling a coming wave of concentrated loads that will further test grid resources.
Regulatory focus is now turning to the market design needed to accommodate these new assets and loads. AEMO is seeking feedback on procedures for capacity credit allocations, demand-side program dispatch, and real-time data access, with multiple submission deadlines in early September.