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As part of Western Australia’s energy transition, the Kwinana Battery Energy Storage System 2 (KBESS 2) project marks a major investment in grid resilience and low-carbon infrastructure. This state-of-the-art facility, with a storage capacity of 250 MVA / 1000 MWh, is designed to help stabilise the power network, store excess renewable energy, and support the state’s long-term sustainability goals.
To prepare the site for construction, Synergy engaged Westforce to deliver bulk earthworks and early civil works within a compressed timeline. Our team stepped in to get the groundwork right, making sure every layer was positioned with care and precision. From the outset, we focused on momentum, simplicity and staying accountable, working closely with stakeholders to manage risks and keep the site running smoothly.
By preparing a clean, stable base for Synergy, Westforce ensured the KBESS 2 project could move ahead without delays or rework. For Westforce, this was another opportunity to bring structure and certainty to the early stages of a high-impact energy project, and to do it with the kind of practical, resourceful delivery we’re known for.
Westforce was engaged to carry out a comprehensive program of site preparation works for KBESS 2, aimed at providing a stable, functional base for the next phase of construction. The package combined both large-scale operations and on-the-ground execution, all delivered with precision and pace.
We started with full-site clearing and grubbing, followed by cut and fill operations to establish reliable levels. Our team then excavated the northern stormwater basin and placed both in situ and imported fill to achieve the required compaction. We also tied the eastern side of the site into existing access infrastructure and prepared laydown zones to support project logistics.
Key tasks also included the safe removal and disposal of surplus materials, including pipes and trees. Throughout the works, we stayed responsive and hands-on, providing regular updates and working in close alignment with Synergy’s delivery team.
From material handling to interface coordination, we simplified complexity wherever we could. Every part of the job was delivered with care, so the next phase could move ahead with confidence and without rework.
Clearing and grubbing: 30,450 m³~
Cut: 3,544 m³~
Insitu fill: 9,823 m³~
Imported fill: 10,301 m³~
Limestone placed: 4,149 m³~
Material disposal: 10,400 m³~
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