Replacement of a three-phase 150-kV overhead power line between the Oisquercq (Tubize) and Buizingen (Halle) substations with a 150-kV underground cable.

Guaranteeing the national grid's reliability

As part of our efforts to guarantee our grid's reliability, we have to continually assess our facilities' performance. Now that the current overhead line is nearing the end of its life, we are redesigning this part of our grid so that we can continue ensuring the security of the region's power supply.

  • texteIn the interest of society

    Replacing the line between Oisquercq and Buizingen is necessary for two reasons:

    • The end of the current line's life
      The line currently connecting the Oisquercq and Buizingen substations dates back to 1959 and is reaching the end of its life.
    • Guaranteeing the electricity grid's security and reliability
      By replacing this line, we are guaranteeing a reliable and secure grid that can provide a continuous supply of electricity.
  • texteThe route

    The new 150-kV underground line, which will feature one three-phase transmission line, will have a total length of 14.7 km, of which 6 km will be in the Walloon Region and 8.7 km in Flanders.


  • environnementEnvironment

    As a socially responsible company, Elia is deeply committed to the environment. It contributes actively to the energy transition and is particularly concerned with preserving biodiversity. It also works closely with local authorities, residents and all the local stakeholders affected by its infrastructure projects as it expands and upgrades its grid.

    A note on the environmental impact assessment  was carried out by an independent consultancy.

    During the works phase, Elia also makes every effort to minimise the impact of its infrastructure projects on the local environment in which they are located.

  • Schedule
    • March-April 2020 : Submission of permit application
    • May 2020 : Public enquiry
    • 2021-2023 : Work on the underground line
    • 2024-2025 : Dismantling of the overhead line



28 September 2021

Work in Tubize to start on 4 October – Use our interactive map to keep informed!

Our project to lay an underground line, which started in Flanders in August 2021, remains on schedule and will begin in Wallonia on 4 October.


03 August 2021

Temporary change in traffic rules in Veldstraat, Kouter, Resteleurs, Driepikkel and Berendries (phases 1 and 2) 

Elia is laying new 150-kV underground electricity cables in Veldstraat, Kouter, Resteleurs, Driepikkel and Berendries. The work will start on Monday, 2 August 2021 and will, under normal circumstances, run until Friday, 10 September 2021. 

Contact us

If you are affected by a project and want to ask us something, please feel free to contact us.
Our team would be happy to help.

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