Sungrow is partnering with ENGIE and Elecnor to advance the 150 MW / 300 MWh Hazelwood Battery Energy Storage System expansion (HBESS 2) in Victoria, Australia. The project will use Sungrow’s advanced battery storage and grid-forming technology to support electricity network stability and enable greater integration of renewable energy. Commercial operations are targeted for 2028.
Under the project, Sungrow Australia will serve as the technology provider, while Elecnor will undertake the balance of plant (BOP) contracting work. The expansion will add significant battery storage capacity to Victoria’s energy infrastructure and strengthen the role of large-scale energy storage in Australia’s National Electricity Market (NEM).
The Hazelwood BESS 2 project will feature 66 units of Sungrow’s ST5015-UX battery energy storage system, part of its PowerTitan 2.0 series. The installation will also include 33 SC6900UD-MV medium-voltage power conversion system (PCS) inverters and the company’s EMS3000 smart controller. These components are designed to support efficient energy storage, power conversion and system management in utility-scale applications.
The PowerTitan 2.0 system incorporates high energy density to optimise storage capacity and liquid-cooled technology to maintain stable operating temperatures. Its battery management capabilities are designed to monitor performance, support battery safety and improve long-term operational reliability. The associated PCS inverters will facilitate power conversion and provide responsive support for electricity grid operations.
Grid-forming technology is another important feature of the project. It is designed to help maintain voltage and frequency stability as the share of renewable energy in the electricity network increases. The technology can respond rapidly to changing grid conditions, supporting reliable operation during fluctuations in electricity supply and demand.
The integration of grid-forming capabilities with battery storage is expected to help accommodate higher levels of variable renewable generation. It can also provide advanced network support under changing operating conditions, contributing to a more resilient electricity system.
As Australia continues to transition towards renewable energy, large-scale battery storage is becoming increasingly important for managing fluctuations in generation from solar and wind power. Battery systems can store electricity when supply is available and deliver it when required, helping balance the electricity network and improve the flexibility of the power system.
Thomas Hou, Managing Director at Sungrow Australia, said the Hazelwood BESS 2 project represents an important step in advancing grid-forming energy storage in Australia. He said the collaboration with ENGIE aims to deploy advanced storage technology to support grid stability and greater renewable energy integration.
The project highlights the growing role of battery energy storage systems in Australia’s evolving energy infrastructure. By combining utility-scale storage with grid-forming technology, Hazelwood BESS 2 is expected to support Victoria’s electricity network as renewable generation expands.
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