MASSIVE Australian battery project will store 5.5 GWh of total power
Jo Borrás | Nov 4 2025 - 4:52 pm PT
3 Comments
Finnish energy giant Wärtsilä has announced the latest addition to its massive network utility-scale battery energy storage system (BESS) projects in Australia: a record-breaking 1.5 GWh deployment that brings the company’s total energy storage capacity in the nation to 5.5 GWh.
The future of large-scale energy projects in Australia is looking increasingly DC-coupled thanks to Wärtsilä, which just announced plans to build the largest BESS of its kind in the National Electricity Market (NEM). The massive hybrid battery project that marks the company’s ninth site down under, and pushes its total capacity to a formidable 5.5 GWh.
The company says its latest, “record-breaking” energy storage plant is a blueprint for how to efficiently combine solar generation and storage to create a more resilient and decarbonized grid.
“This project is significantly larger than our earlier DC-coupled project, underscoring the need for this type of technology in expanding at scale,” said David Hebert, vice president of Global Sales Management at Wärtsilä. Hebert called the DC-coupled technology, “a breakthrough for hybrid renewable plants and a critical step towards establishing a financially viable renewable energy future.”
Hebert believes projects like this one play a hugely important role in stabilizing Australia’s grid while, at the same time, advancing the country’s ambitious net-zero emissions targets from the energy sector by 2045.
With a 20-year service agreement already in place and the order set to be booked this quarter, this project is a working prototype for the next generation of global renewable assets. As nations worldwide grapple with the challenge of moving beyond fossil fuels, the success of this massive DC-coupled system will provide a real-world model for how to build a grid that is cleaner, smarter, and more resilient than ever before.
Electrek’s Take Explainer
If you’re not familiar with DC-coupling, it’s an efficiency game-changer. Unlike traditional AC-coupled electrical systems that require converting solar-generated direct current (DC) to alternating current (AC) for use by the grid, and then back to DC to use in a battery, a DC-coupled system connects the solar array and battery directly. This architecture cuts energy losses that occur during conversion, capturing more solar power and significantly improving project economics and overall system efficiency.
In other words: it saves money, and shores up the grid. Wins all ’round!
SOURCE | IMAGES: Wärtsilä, via Power
electrek.co
My comments:
In other words MPPT trackers.
en.wikipedia.org
DC all the way.
Just how my solar and storage systems work that power my home and car.
Eric |
