Former Macquarie Bankers Plan One of Australia’s Biggest Six-Hour Batteries with 4,800 MWh of Storage

Why It Matters

Red Gully will provide critical grid stability as Western Australia retires coal plants and connects a surge of wind and solar projects, positioning the state as a leader in large‑scale energy storage. Its scale and timing could accelerate renewable integration and attract further investment in the region’s clean‑energy infrastructure.

Key Takeaways

• Red Gully aims for 800 MW, 4,800 MWh capacity.
• $1 billion first stage funds 400 MW, 2,400 MWh buildout.
• Project slated for final decision early 2027, commissioning 2028.
• Located beside new 330 kV line, near Marri wind farm.

Pulse Analysis

Western Australia’s battery landscape is evolving rapidly, driven by the need to replace aging coal generation and to accommodate a wave of renewable projects. The state already hosts the country’s two largest operating batteries in Collie, but the proposed Red Gully facility would double that capacity, delivering 800 MW of power for six hours of continuous discharge. Such a scale not only sets a new benchmark for Australian storage but also creates a flexible resource that can smooth intermittent wind and solar output, reducing reliance on fossil‑fuel peaker plants.

BLT Energy, founded by former Macquarie Group bankers, is leveraging deep financial expertise to fund the project. An initial $1 billion investment will fund a 400 MW, 2,400 MWh first stage, with the full build‑out expected to follow a final investment decision by early 2027. The battery has already earned "Connection Ready Critical Project" status from Western Power, ensuring priority access to the new 330 kV transmission corridor that runs north from Perth. Its proximity to the Marri wind farm and a corridor of solar and wind developments positions Red Gully as a hub for renewable‑storage integration.

Strategically, Red Gully could be a catalyst for broader energy transition in the region. As Western Australia plans to close several coal plants, large‑scale storage will be essential to maintain grid reliability and meet rising demand. The project also signals confidence to investors, suggesting that Australia’s regulatory environment and market incentives are becoming conducive to megaprojects of this magnitude. If successful, Red Gully may inspire similar ventures across the continent, accelerating the shift toward a low‑carbon, resilient electricity system.