Enervest has agreed to sell its 1.2 GW / 4.8 GWh Hanworth Battery Energy Storage System in New South Wales (NSW) to Octopus Australia. The transaction supports Enervest’s portfolio optimization and long-term own-and-operate strategy, while enabling Octopus Australia to advance planning, grid connection and delivery of a large-scale asset supporting grid reliability.
PROJECT SNAPSHOT
Australia-based Utility-scale energy developer, Enervest has announced the sale of its Hanworth battery energy storage system (BESS) project to Australia-based Energy infrastructure investor, Octopus Australia, marking a portfolio transaction within the New South Wales energy storage market.
The Hanworth BESS is located near Bannaby, west of Bowral in New South Wales (NSW), and is planned with a capacity of 1.2 GW / 4.8 GWh. The project is positioned adjacent to Transgrid’s Bannaby Terminal Station, enabling a direct connection to the transmission network.
The Hanworth BESS has been designed to provide large-scale energy storage to support electricity system operations in New South Wales. Once operational, the Hanworth BESS is expected to support electricity system operations by storing energy during periods of higher supply and discharging during times of increased demand. Under the transaction, Octopus Australia will take responsibility to progress the project through planning approvals, grid connection arrangements, and procurement activities ahead of construction. The project will be incorporated into Octopus Australia’s long-term Australian portfolio of owned and operated energy assets. Enervest will continue to support the project during development, with ongoing involvement in planning coordination, environmental processes, and community and stakeholder engagement alongside Octopus Australia.
Ross Warby, CEO of Enervest, said that the sale aligns with the company’s broader portfolio strategy, allowing capital to be redeployed toward assets planned for long-term ownership and operation. He added that Enervest will remain a landowner and ratepayer in the area and continue engagement with local stakeholders.
Sam Reynolds, CEO of Octopus Australia, said that the company’s investment approach reflects its assessment of Australia’s energy market, noting the need for new capacity to replace ageing coal-fired generation. He stated that a combination of solar, wind, and battery storage can meet this requirement and that managing assets as a portfolio enables power supply during periods when variable generation is limited.