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A new line to T-off from existing network infrastructure on a 132 kV line between Northern Terminal and Northam is proposed to connect Henley Brook Substation. This will be supported by new 132 kV transmission lines and upgrades to terminals and substations.

The investment in a new transmission line is critical to significantly increase capacity and enable new energy sources to come online.

Northern Terminal to Henley Brook Substation line route map

*The map is a simple representation - location is indicative. All new line routes are subject to further design and route selection.

Indicative timeline

Activity Timeline
Consultation with local governments and State Government agencies In progress from mid-2023
Flora and fauna survey In progress from late-2023
Engagement with landowners and community Proposed from early-2024
Refer project to State and Federal environmental regulatory bodies From mid-2024
Environmental impact assessment From mid-2024
Submit Aboriginal Heritage Act approval Proposed 2024
Submit developmental approvals Proposed 2024
Procurement of materials Proposed from 2025
Finalise environment, heritage and planning approvals Proposed 2026

*The timelines indicated are subject to change as a result of relevant surveys and assessments. Some activities may happen ahead of approvals.