EXECUTIVE SUMMARY

Australian electricity and gas company Alinta Energy has commenced commercial operations at its 100 MW/200 MWh Wagerup Battery in Western Australia, expanding its generation fleet with additional battery energy storage capacity. The battery has been operating commercially since September 2026, according to an announcement issued on 27 October 2026. The project was completed despite challenging site conditions that required significant engineering modifications during development and construction.

The Wagerup Battery has a power capacity of 100 MW and an energy storage capacity of 200 MWh. Its commissioning marks the completion of a battery storage project that required extensive site preparation and engineering work. Alinta Energy confirmed that the facility is now operational and forms part of its existing generation fleet in Western Australia.

Construction of the Wagerup Battery involved several technical challenges associated with the project site. These conditions required the project team to undertake substantial redesign and remediation work before completing the installation. One of the major engineering changes involved raising the battery platform to accommodate the site requirements.

The project also required the construction of substantial retaining infrastructure. These modifications formed an important part of the work needed to address the challenging ground and site conditions. According to Alinta Energy, delivering the battery involved considerable complexity, with the team working through the necessary changes to complete the facility.

Alinta Energy acknowledged the contribution of employees and contractors involved in the project. Engineering, construction and commissioning teams worked alongside personnel responsible for operations, commercial activities, safety, legal matters, insurance and finance. The company highlighted the cooperation between these functions throughout the delivery process.

Safety remained a priority during construction and commissioning. Alinta Energy stated that project participants supported one another and maintained a focus on safe working practices while addressing the difficulties encountered during delivery.

Following the completion of the project, the company organised a small lunch at the site to recognise the efforts of the people involved. The gathering provided an opportunity to acknowledge the work undertaken across the different project functions and the challenges overcome during construction.

Alinta Energy also recognised the contributions of its delivery partners and suppliers, describing their expertise and efforts as critical to completing the battery installation.

With commercial operations underway since September, the Wagerup Battery has joined Alinta Energy’s generation fleet. The completed facility represents the outcome of extensive engineering, remediation and construction activities undertaken to deliver the 100 MW/200 MWh battery storage project in Western Australia.