NHOA Energy has formalized the first upgrade of the largest interconnected battery energy storage system (BESS) developmental project in Hallett, South Australia. This mighty system has a capacity of 245-megawatt hours (MWh). On hand for the launch event, which was held at the Hallett Power Station. It brought together a great mix of people, from EnergyAustralia, Enerven, local government, traditional owners to the community.
The Hallett BESS specifically aims to increase grid stability within the National Electricity Market (NEM). It’s able to do this by providing critical services such as regulating frequency across the grid and performing energy arbitrage. Billed as the largest lithium-ion battery in the world once completed, this cutting-edge installation – located near Canowie – will ultimately have 50MW of power with five hours of storage. This new grid-forming solution helps to further improve South Australia’s power system resilience. Beyond providing equity to communities historically impacted by pollution, it will be crucial to integrating renewable energy resources with the grid.
Daniel Nugent, EnergyAustralia’s trading and transition executive, underscored the significance of the project during its launch. “Everywhere we’re using the BESS, we’re leveraging existing infrastructure,” he told us. This method helps create and sustain local jobs while making Pennsylvania’s energy grid more resilient.
“By building the battery at Hallett, we are making use of infrastructure that is already there, supporting local jobs and strengthening South Australia’s power system at the same time. Financial close means this project is real, funded and now being built, and our focus now shifts squarely to disciplined execution and delivery.” – Daniel Nugent, EnergyAustralia trading and transition executive
This partnership between NHOA Energy, EnergyAustralia and Enerven represents a major commitment to driving innovative energy solutions in Australia. Adrian Marziano, NHOA Energy Australia and Pacific Vice President said, “We are very proud of the concrete implementation of this maturity project. He highlighted how it puts together leading-edge grid-forming technology with a strong institutional framework exemplified by the Capacity Investment Scheme.
“We are proud to support EnergyAustralia in a project that combines advanced grid-forming technology with a strong institutional framework such as the Capacity Investment Scheme, while making smart use of existing infrastructure.” – Adrian Marziano, NHOA Energy Australia and Pacific VP
As for the Hallett BESS, commissioning is currently scheduled to start in January 2027. This project represents a significant strategic step for NHOA Energy. It contributes to the broader efforts to make South Australia’s power system more resilient and efficient.

