Skip to main content
energy for life

Onslow Power Project


In December 2016, Horizon Power awarded contracts for key power infrastructure projects which will effectively see the entire power system for Onslow refreshed. The key elements of the works include:


Scope Where Contractor
Construction of a new modular power station with an installed capacity of approximately 8 MW Near the corner of Onslow Rd and the ANSIA access Rd Downer EDI Engineering and Power Pty Ltd
Installation of 33 kV dual circuit underground cables Adjacent to the Onslow Rd to a new zone sub-station Downer EDI Engineering and Power Pty Ltd
Construction of a new zone substation Opposite the new water tanks on Onslow Rd Downer EDI Engineering and Power Pty Ltd
Installation of 11 kV distribution cables to connect the new infrastructure to the town Adjacent to new Onslow Rd and McAullay Rd Geographe Excavations and Underground Power
Replacement of Horizon Power's existing overhead power lines with a new underground power network Within the town To be advised


The new infrastructure will cater for the town's growing demand for energy as well as offer a more contemporary design to leverage off advances in renewable and battery storage technology, delivering friendly and economical solution to suit Onslow's unique energy needs.

Construction activities are planned to start in April 2017 with final commissioning of the new power station scheduled for January 2018.

The replacement of existing overhead power lines is jointly funded by the State Government and the Shire of Ashburton.

The 11kV distribution cables connecting the new infrastructure is funded by the State Government.

The new power station, 33kV cables and zone substation works are funded through a State Development Agreement signed for the Chevron Australia operated Wheatstone Project, a major liquefied natural gas project 12 kilometres west of Onslow.

In 2017, Horizon Power will also be undertaking a detailed options analysis for the deployment of distributed energy resources in the form of batteries and solar, with associated construction activities for these works scheduled to commence in 2018.

Onslow is the last of the Pilbara towns to have its overhead network undergrounded under PUPP.