Waratah Super Battery Transformer Update
The delivery of the replacement transformer to the site is scheduled for the third quarter of 2026. This decision follows a detailed design review process for the transformer, completed by Consolidated Power Projects and Wilson Transformer Company.
The design review also included input from independent transformer consultants engaged on behalf of Consolidated Power Projects Australia and other stakeholders. Akaysha Energy has been advised by Consolidated Power Projects that the design meets requirements and manufacturing can commence accordingly.
The original HVT3 transformer experienced a significant internal fault, resulting in damage to the windings and an overpressure event. This overpressure led to the rupture of the tank wall near the base, causing the transformer to self-drain into the surrounding (bunded) area. Investigations into the cause of this fault are ongoing.
The Waratah Super Battery continues to operate with one transformer in service. As a precautionary measure, the second transformer (HVT2) remains offline, with its remediation incorporated into a defined program of work to ensure all three transformers will be operational at the site later in 2026.
The previous decision to engage an Australian-based transformer manufacturer has enabled Akaysha Energy to expedite the investigation, site works and replacement programs. This approach has facilitated immediate engineering engagement, a strong on-site presence, and rapid mobilisation of manufacturing resources.
The Waratah Super Battery continues to operate, currently meeting half of its System Integrity Protection Scheme (SIPS) obligations at 350MW. The remaining capacity of the battery is scheduled to come online by the end of 2026.
Akaysha Energy will continue to provide updates on the project’s progress.