Undergrounding
Is undergrounding being considered?
While the project has been proposed as an overhead transmission line, we have investigated the feasibility of undergrounding as an alternative in preparing the Environment Effects Statement (EES).
Based on the preliminary findings, overhead construction is considered the most appropriate for the full length of the proposed transmission line. Further work is being undertaken on undergrounding sections of the proposed route (partial undergrounding).
Key information on undergrounding, including high voltage direct current (HVDC) can be found in the Underground Construction Summary published in 2021. The document includes details of the environmental impacts of overhead and underground transmission infrastructure on pages 12 to 13.
This summary is based on preliminary work and was published in response to requests from the community for information about undergrounding. We will provide an update when our investigations are complete and more information becomes available.
More information is available in the Underground Construction Summary.