Australia’s AGL Energy has submitted its 350 MW/1,450 MWh Kangaroo Valley battery energy storage system (BESS) in New South Wales (Australia) for assessment under the government’s Environment Protection and Biodiversity Conservation (EPBC) Act. The project is planned to connect to Transgrid’s existing Kangaroo Valley Switching Station through a 1.2 km underground 330 kV transmission line. Construction is expected to last approximately 18 months, while the battery is designed for an operating life of up to 20 years.
Separately, AGL is at an early stage of exploring a long duration 500 MW/4,000 MWh BESS in Eglinton. The Bathurst BESS would connect to an existing 330 kV transmission line crossing the site. According to AGL’s project documentation, construction would take approximately 24 months, with work expected to commence in late 2028 and operations targeted to begin in 2030 (Energy-storage news, 24/09/2026)
AGL operates one of the largest privately owned electricity generation portfolios in Australia’s National Electricity Market (NEM). Historically heavily reliant on coal, the portfolio is now undergoing a transition. The company aims to add 12 GW of renewable and firming capacity by the end of 2035, with an interim target of 6 GW by FY30, including at least 3 GW of grid-scale batteries.
According to its 2026 annual report, AGL expanded its development pipeline to over 10 GW during FY26, driven by its acquisitions of Firm Power and Terrain Solar.