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The South West Interconnected System Demand Assessment (SWISDA) affirms our preparation for transmission network expansion to enable industrial decarbonisation, service renewable generation and support local economic growth across the State as WA moves towards achieving net zero. As a key enabler in supporting industry to reach their decarbonisation goals, we’re well prepared for this.  

The SWISDA has provided the State Government with an understanding of industry future demand for renewable electricity supply on the SWIS as a growing number of industries and businesses seek to decarbonise through electrification. 

The fast-tracked assessment identifies the potential change in electricity demand over the next 20 years, considering the requirements of existing industrial users on the SWIS and potential growth in new industries like hydrogen and critical minerals. 

Transmission tower with wind turbines in the background

It sets the groundwork for the State Government to progress consultation and collaboration with existing and new industrial users to inform network investment, including mechanisms for industry contributions and third-party investments.

Through consultation with existing and potential new industry stakeholders, a range of potential demand scenarios were considered with all scenarios showing that the State’s main transmission network would need to grow to meet proposed industrial demand and achieve net zero greenhouse gas emissions by 2050.

While transmission expansion and network investment will be determined through engagement with industry regarding their projects energy requirements, Western Power is well prepared for this:

  • We’re actively investing in technologies to ensure the grid is prepared for the increase in the share of renewable generation powering the community and to meet industry load demand increase that will enable them to achieve emissions targets. 
  • We’ve already identified early work that require transmission expansion. 
  • The additional $126M provided by the State Government in the 2022-23 State Budget will support planning works in the northern, central and eastern corridors of the SWIS, reflecting the highest anticipated growth areas.
  • The funding will also support planning and purchase of long-lead items for initial upgrades in the north network, which is expected to see a boom in new energy projects, as well as upgrades in the east network.

For more information please visit SWIS Demand Assessment and PoweringWA