Australia’s energy system is undergoing a significant change, with transmission and utilities at the centre of this transition. UGL’s work across energy assets provides a practical view of how modern networks are evolving and what is required to deliver resilient, future‑ready infrastructure while maintaining safety, system reliability and network performance.
With more than 300 substations delivered across voltage ranges from 11 kV to 500 kV, UGL's transmission and utilities team has established strong internal capability in the design, construction, upgrade, testing and commissioning, and integration of high‑voltage infrastructure.
This experience spans both new green field builds and complex existing brownfield sites, where integrating new systems into live operating environments demands careful engineering, rigorous controls, and disciplined execution.
In brownfield settings, client priorities are clear. Electrical safety and network security are paramount, and upgrades must be completed with minimal impact on broader network operations.
UGL’s experience working within energised substations reflects a clear understanding that success is defined not only by what is built, but by how safely and efficiently new infrastructure is integrated into existing protection, control, and operational systems.
A key element of UGL’s delivery model is its turnkey capability, combining engineering design, procurement, construction, testing and commissioning, and network integration under a single, coordinated framework.
This approach is supported by a blend of self‑performed works and specialist subcontractors, including in‑house commissioning teams. Retaining commissioning capability internally allows UGL to embed safety into live network integration, manage interfaces more effectively, and reduce risk during one of the most critical phases of brownfield delivery.
Where UGL’s recent substation expertise is demonstrated
Neerabup 132 kV and 330 kV Extensions, Western Australia
UGL is delivering major extensions at Neerabup through the Clean Energy Link program to support renewable energy integration and strengthen overall grid capacity.
Woree Substation Upgrade, Queensland
UGL completed upgrades including 275 kV bays, 132 kV CTVT installations, and major secondary systems enhancements, all delivered within tight outage and operational constraints.
Tangkam and Oakey Substation Rebuilds, Queensland
Through Powerlink’s Substation Panel Agreement, UGL is delivering civil, electrical, and secondary systems upgrades that strengthen regional grid performance and support long-term asset reliability.
Maragle and Gugaa 500 kV Substations, New South Wales
Through a joint venture with CPB Contractors on Transgrid’s HumeLink West project, UGL is delivering two new 500 kV substations at Maragle and Gugaa, along with upgrades to the existing Wagga Wagga 330 kV substation, supporting large‑scale transmission integration across the NSW network.
Three Springs Terminal Substation Works, Western Australia
As part of Western Power’s Clean Energy Link – North program, UGL is delivering engineering, procurement, and construction works at the Three Springs Terminal, including the design and installation of high‑voltage transmission and substation equipment to enable large‑scale renewable energy connections and strengthen grid capacity in the Mid West.
UGL’s transmission and utilities and terminal substation capability is reflected in the outcomes it enables:
- reliable integration of renewable energy,
- strong continuity of supply for communities,
- safe and efficient modernisation of existing assets, and
- a grid better prepared for future demand.
With hundreds of successful substation and terminal stations projects and decades of national experience, UGL transmission and utilities continues to support the evolution of Australia’s energy landscape through practical, engineered, and scalable delivery.