RWE Launches Australia’s First 8-Hour Energy Storage System

RWE Gains Approval to Operate Landmark 8-Hour Battery Storage Project in Australia

German energy group RWE has received official approval to fully commission a landmark energy storage project in Australia. The green light was jointly granted by the Australian Energy Market Operator and grid operator Transgrid. The decision allows the operation of the country’s first-ever eight-hour battery storage system with a capacity of 50 MW and 400 MWh.

American Technology and Shared Infrastructure

The project, named Limondale BESS, is located in the Murray region, approximately 850 kilometers southwest of Sydney. The facility is based on 144 Tesla Megapack battery containers developed by Tesla.

The system is designed in a unique configuration: it can charge from the grid at up to 100 MW and discharge at 50 MW continuously for eight hours.

The project was developed by an international consortium including RWE, Tesla, and local engineering and energy service providers.

Strategic Location Next to a Solar Power Plant

A key advantage of the project is its location. The battery system is directly connected to RWE’s existing 314 MW Limondale Solar Farm, which spans 770 hectares and consists of hundreds of thousands of solar panels.

Thanks to this setup, the storage system was integrated using an existing 33 kV substation. This significantly reduced infrastructure costs and eliminated the need for additional transmission construction.

A New Standard for Long-Duration Storage

The eight-hour duration design reflects New South Wales’ official strategy focused on building more stable and resilient energy networks. The Limondale project was the first in the country to win a dedicated procurement tender and secure a long-term storage service agreement.

RWE’s head of renewables, Sopna Sury, described the project as a historic milestone for Australia’s energy sector. The extended discharge time not only enhances grid stability during peak demand periods but also enables more efficient use of renewable energy.

RWE Expands Its Global Battery Portfolio

RWE continues to rapidly expand its global battery storage portfolio across the United States, Europe, and Australia. The company currently operates around 1.7 GW of installed battery capacity, with an additional 2.5 GW under construction worldwide.