Ampyr Australia has selected Fluence to deliver the 300MW / 600MWh Wellington battery energy storage system (BESS) in New South Wales.
The BESS, located in Wellington, is designed to enhance grid reliability, facilitate greater integration of renewable energy, and contribute to lowering energy costs for consumers.
Fluence, a joint venture between Siemens and AES, will build, service, and maintain the asset under a 20-year operational service contract.
The project will also be powered by Fluence’s Mosaic bidding software and Nispera asset performance management software.
The Wellington Stage 1 BESS is Ampyr’s first grid-scale battery energy storage system to reach financial close in Australia. The project is scheduled to be energised in 2026.
Wellington Stage 1 will use Fluence’s Gridstack grid-scale energy storage product, underpinned by Fluence’s multi-generational technology platform.
Fluence’s AI-powered bidding software Mosaic will be used to manage Ampyr’s virtual tolling contract, which will allow the company to nominate when the battery should charge or discharge, to maximise performance.
“We are thrilled to be partnering with Ampyr on the Wellington Stage 1 BESS project, marking another step forward in strengthening Australia’s transition to a more sustainable energy future,” said Jan Teichmann, Fluence’s senior vice president and APAC president.
“We believe the full suite of Fluence’s innovative storage products and operational services will allow Ampyr to extract the most value out of the Wellington BESS once operational.
“Fluence has a strong track record of delivering BESS projects in Australia, and our established team is dedicated to ensuring the Wellington BESS will create a more resilient grid for Australia.”
Ampyr Australia chief executive Alex Wonhas said: “The Wellington Stage 1 grid-scale battery represents a significant contribution to growing Australia’s renewable energy capacity and strengthening its grid stability.
“Our partnership with Fluence will enable the delivery of competitively priced, reliable renewable energy to major Australian electricity users.
“This project is a crucial first step in our commitment to delivering 6000 MWh of operational BESS by 2030, directly addressing the growing need for grid-scale batteries and accelerating Australia’s transition to a reliable, affordable, and renewable energy future.”


