Western Power is currently undertaking maintenance works on the decommissioned Cannington Terminal to Marriott Road 132 kV transmission line. The reason for the works is to repair the line where required for safety compliance and to maintain the transmission line corridor. It is anticipated that this corridor will be needed for a new 330,000 volt (330 kV) transmission line to cater for the future energy requirements of the South West.
The majority of the South West is serviced by the South West Interconnected System (SWIS) transmission network. It is forecasted that due to future demand for power, the SWIS will require an additional 1000 megawatts by 2017. Western Power is continually working to strengthen the SWIS, and the Cannington to Marriott Road transmission line corridor forms an integral part of these works. The new 330 kV line will ensure there is sufficient capacity available within the network to cater for this growth.
With this in mind, the current schedule of works will incorporate the removal of the line between Landwehr Terminal near Waroona and the new South East Terminal at Byford. Although the current line will be dismantled, wherever possible Western Power will aim to utilise the existing line route corridor for the future 330 kV transmission line to minimise land clearing and landowner impacts. An example of the existing and new structures has been attached for your reference.
In order to find a line route with the least overall impacts, Western Power will also be undertaking extensive line corridor investigations where any deviations from the existing line route are required. This will include analysis of social, environmental, technical and economic aspects. These are taken into consideration throughout the planning and decision-making process to find the solution that represents the best overall outcome.
If you have any questions relating to this project please contact the following Project Officers on their details below:
Page update on 23 November 2009
