Gouy - Ville-sur-Haine


The project

Elia: A partner of Wallonia's industrial development

A region's security of supply and access to a reliable electricity grid tailored to demand from major consumers are decisive factors for investors when scouting locations for new projects. With this in mind, Belgium's regional and federal authorities have tasked Elia with making the investments most likely to ensure that the grid is tailored to developments on the electricity market.
The projects and investment plans in Hainaut have been revised to meet growing demand from companies. Some were brought forward by several years.

The Gouy - Ville-sur-Haine project is crucial to securing the further economic growth of the area and guaranteeing a reliable, sustainable electricity supply.

Elia is investing €15 million in the Gouy - Ville-sur-Haine project as part of the 2015-2025 Federal Development Plan approved by the Minister for Energy.

Local and national benefits

At local level, the new line will accommodate the growing electricity consumption triggered by Hainaut's economic development. As a result, everyone will enjoy more security of supply.
At national level, the grid will be shored up, thus expanding international market opportunities.
By investing in this major project, Elia is safeguarding the grid and its infrastructure for the next 80 years.
In line with its infrastructure policy, Elia always meets the strictest standards in force when new infrastructure is being built. Elia will utilise the best available technologies in the Gouy - Ville-sur-Haine project.


  1. Study and design phase begins
  2. Permit applications submitted
  3. All permits issued in July 2016, work begins
  4. The set deadlines were met thanks to excellent coordination between the relevant authorities and the Elia team. Work is scheduled for completion in December 2017.


Elia is committed to taking all possible action to guarantee everyone's safety at all times during this major project and to minimise the impact of the work and disruption for local residents and the environment.

Elia usually installs new underground lines in four phases.

  • Underground high-voltage lines are laid in sections measuring between 950 and 1,250 metres long. Trenches (1 metre wide, 1.45 metres deep) are dug, with the necessary supports fitted along their entire length.


  • As soon as a section is completely open, cables in a protective polyethylene coating are pulled into the trench.


  • The trench is filled once the cables have been laid.
  • Lastly, the site of the work is restored to its original state.
  • Some work (e.g. under canals or railways) must be carried out using horizontal directional drilling


Efficient and constructive cooperation with everyone involved in such projects is key to ensuring that Elia's project activities run smoothly.

Coordination on the Gouy - Ville-sur-Haine project is excellent. This is essential if we want to successfully complete such a major project by the set deadlines and with respect for all parties involved.

The following parties are involved in this project:

  • The Operational Directorate-General for Roads and Buildings of the Walloon Public Service (DGO1)
    More specifically:
    • The Directorate for Soft Transport and Communal Partnerships
    • The Directorate for Roads - Mons
    • The Directorate for Roads - Charleroi
  • The Operational Directorate-General for Mobility and Waterways of the Walloon Public Service (DGO2)
    More specifically:
    • The Directorate for Waterways - Mons
    • The Directorate for Waterways - Charleroi
  • The Operational Directorate-General for Town and Country Planning (DGO4)
    More specifically:
    • The External Directorate Hainaut 1
    • The External Directorate Hainaut 2
  • The Port autonome du Centre et de l'Ouest (PACO)

Limited impact on mobility

Elia strives to minimise the impact of its infrastructure activities on mobility.

  • Should it prove necessary to temporarily close roads for work, the necessary detours and signage will be provided, in consultation with the police force.
  • Also in consultation with the local police force, site signs will be set up to provide the general public with information, more specifically the start and end date of the works and the detours available.
  • As work is being performed in sections of 950 to 1,250 metres, disruption is limited both with regard to time and scale.

Limited noise pollution

The same applies to the noise produced by the works.

  • Noisy work will only be performed during working hours (from 7 a.m. to 5 p.m.), unless the authorities involved want to limit disruption to mobility and consent to work also being performed outside working hours on certain days.
  • Site vehicles are only switched on when needed.


Elia always organises its sites with an eye on the safety of employees and local residents and on an uninterrupted electricity supply.

  • Worksites are always clearly demarcated.
  • A safety coordinator checks daily whether work is running smoothly.
  • Municipal and regional infrastructure are restored to their original state based on the site description created before work began.

The power supply is guaranteed throughout the work, thanks to the meshing of the Elia grid. It works like a road network on which it is possible, while work is being performed, to use secondary lines and therefore guarantee the transmission of electricity and consequently the supply of power to households.


Contact the team

  • via e-mail: riverains@elia.be  
  • via telephone: 0800 18 002 (during office hours)