High-voltage substation Koksijde

Elia is going to carry out the following activities :

• Installation of a phase-shifting transformer (150kV)
  Elia will install a phase-shifting transformer (Phase Shifter) in the high-voltage substation. This is a type of ‘flow valve’ that regulates the power on the installations. The phase-shifting transformer is necessary in order to prevent offshore wind farms from overloading the region's electricity grid.

• Installation of new transformer (150kV/11kV)
  A transformer converts voltage from a higher to lower level and vice versa. A new transformer will ensure that Elia can convert more high-voltage electricity (150 kV) to medium voltage (11 kV). Distribution system operator Fluvius will bring this electricity to homes and businesses in the region.

• Expansion and renewal of switching equipment (70kV and 150kV)
  To be able to use new transformers, an expansion or renewal of switching equipment is necessary. This system is similar to the electricity distribution box in a house, but then on a much larger scale. Switching equipment consists of several switching fields connected to each other by a bus bar.

• Construction of new control room (150kV)
  Elia is going to build a new control room that monitors the operation of the high-voltage substation. Data (frequency, voltage, power) is transmitted continuously from the relay room to Elia. This makes it possible to operate the high-voltage substation safely.

During the works, Elia will strive to minimise disruption to local residents.

• The works will only be carried out during the day, between 7 a.m. and 7 p.m.
• Elia guarantees that homes and businesses will always be accessible during the works.
• Site traffic will use the shortest, safest and most accessible routes.

After the works, Elia will create additional green buffers and zones.

• Extending hedges and planting trees around the high-voltage substation
• The planting of two rows of pollard willows along Ganzestraat as a visual buffer from Koksijdesteenweg
• Sowing gravel beds in the high-voltage substation with ground-covering dune vegetation

• 2020-2022: Studies and discussions with stakeholders
• July 2022: Submit environmental permit application
• August - September 2022: Public inquiry
• Summer 2023: Obtain environmental permit
• Summer 2023-2026: Modification works high-voltage substation

Letter to local residents - June 2022 (in Dutch)

Sheet - Noise near high-voltage installations (in Dutch)

Sheet - What is a high voltage high-voltage substation? (in Dutch)

Letter to local residents - August 2023 (in Dutch)