Elia Lillo 380/150/36 kV Project

Substations / Belgium

Works to start

Omexom will complete this project in the period from January 2021 to the end of 2024. The end customer has laid out a tight schedule, with possible delays out of the question.

Customer: Elia

Location: Lillo

Period: January 2021 – December 2024 (Engineering and execution)


  • Engineering (civil and electrical)
  • Project management
  • Procurement
  • Construction management

Project description

380 kV

New GIS 380 kV – B

  • 2nd GIS 380 kV + relay room serves to guarantee the redundancy of the installation. Both GIS installations can therefore be switched independently of each other. This is to guarantee the power supply to the customers  at all times.
  • A total of 8 fields.

Expansion of the existing GIS 380 kV – A

  • Adjust 2 new fields and 3 existing fields.

2 new transformers 380/150 kV – 185MVA

New relay room for GIS 380 kV – B

New emergency diesel for GIS 380 kV – B

150 kV

Splitting up of existing GIS in LILLO

New GIS 150 kV – A

  • A total of 14 fields

Design relay room 150 kV – A

Breakdown of the AIS field 150-249

Adding an HD-TFO T4 150/36


In addition, modifications are planned in the 380 kV substation – GALGE as an auxiliary post.


Actual situation

Finished situation