The Western Australian Government has awarded $342 million in contracts to deliver major upgrades to the state's electricity network as part of the Clean Energy Link - North program.

The investment will see enhancements to the South West Interconnected System (SWIS), with a focus on improving capacity and reliability across key sites north of Perth. Work includes the development of new high-voltage terminals, network expansions, and upgrades to existing infrastructure, such as substations and transformers, along the corridor from Malaga to Three Springs.

The contracts, awarded to GenusPlus, UGL Engineering, and Acciona, are part of a broader $584 million commitment by Western Power to support the integration of renewable energy and prepare the grid for the state's planned coal exit by 2030.

Once complete, the upgraded infrastructure will support the delivery of around 1.4GW of renewable energy--enough to power 500,000 homes--and improve energy flows from the Mid-West into the broader grid.

Western Power CEO Sam Barbaro said the project is a key milestone in building a more flexible, future-ready network. WA Energy and Decarbonisation Minister Amber-Jade Sanderson added that strengthening the grid will help industries and communities connect to clean energy more reliably.

Construction is set to begin in 2025 and finish by 2027, creating over 400 local jobs.