AGL Pumps Up NSW Energy Storage with Major Hydro Acquisition

AGL has significantly expanded its renewable energy pipeline with the acquisition of two pumped hydro projects in the Upper Hunter region of New South Wales. With a combined planned capacity of 1393MW, the Glenbawn and Glennies Creek projects mark a substantial addition to Australia’s long-duration storage capabilities.

These early-stage assets, previously owned by Upper Hunter Hydro Top Trust (UHH), are designed to provide 770MW and 623MW of ten-hour pumped hydro energy storage, respectively. Both projects have the potential to integrate wind farms in future phases, enhancing their value as flexible, firming power sources.

Markus Brokhof, AGL’s Chief Operating Officer, emphasized that pumped hydro is a cornerstone of the utility’s plan to add 12GW of new renewables and firming capacity by 2035. The Upper Hunter projects complement this vision, offering geographical advantages and economic benefits to the region.

AGL welcomed the New South Wales Government’s updated definition of long-duration storage (more than eight hours) and its increased targets in the area. With a technical lifespan of up to 100 years, pumped hydro offers both reliability and long-term economic sustainability.

The technology stores energy by pumping water to a higher reservoir and releasing it through turbines during times of high demand. This method enables the grid to respond flexibly and cost-effectively, especially as intermittent renewables expand.

Outgoing UHH Chairman, Malcolm Turnbull, expressed confidence in AGL’s capacity to deliver these projects, citing the utility’s strong financial position and regional experience. He highlighted the potential for job creation and investment in the Hunter region, which remains central to Australia’s energy transition.

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