Our infrastructure

Transmission Network

Excellently interconnected

Fluxys Belgium’s transmission network is excellently linked to all natural gas sources available to the European market. The system also enables gas flows in both directions with all adjacent markets. Thanks to its versatility, customers use the Belgian system both for their supplies into Belgium and for border-to-border transmission to supply other markets in Northwest Europe.

Network length

4,000 km

Border interconnection points

Interconnection points with all adjacent markets: UK, France, The Netherlands, Germany and Luxemburg

Network connection points in Belgium

Connections with 17 Distribution System Operators

Connections with 230 industrial sites and gas-fired power stations

Compressor stations

Berneau, Weelde, Winksele, Zelzate

Network conversion to high-calorific gas

The gas system in Belgium consists of two separate networks: a network for high-calorific gas and a network for low-calorific gas. The latter is gas from the Groningen field in the Netherlands and exports of this low-calorific gas will progressively phase out between 2024 and 2030. Fluxys Belgium and the Distribution System Operators are therefore proactively switching end-users of low-calorific natural gas to high-calorific natural gas. Completion of the network conversion is planned for 2024.

More about the conversion to high-calorific gas

Zeebrugge LNG Terminal

LNG gateway into Northwest-Europe and beyond

The Zeebrugge LNG terminal serves as a gateway to supply liquefied natural gas (LNG) to Northwest Europe and beyond. The facility provides for unloading large LNG vessels and keeping the LNG temporarily in storage. The LNG can be regasified and injected into the transmission network for delivery throughout Northwest Europe or loaded back onto LNG ships to supply other markets. Direct transshipments of LNG between two vessels are also possible.

Large-scale and small-scale LNG

In addition to accommodate large LNG vessels and large volumes of LNG, the Zeebrugge terminal also loads small LNG vessels and LNG trailers to serve the so-called small-scale LNG market: LNG used as an alternative fuel for vessels and trucks or as fuel for industrial customers not in the vicinity of a natural gas pipeline system.

Maximum technical capacity

Regasification capacity

Transshipment capacity

Storage capacity

Send-out capacity


174 TWh/year

107 transshipments (214 ships)/year

566,000m³ of LNG (5 storage tanks)

27.8 GWh/hour

LNG carriers received since
commissioning in 1987



Loenhout underground storage

Loenhout is a unique Fluxys facility, where we operate an underground gas storage plant which serves as a giant strategic buffer for the energy system.

Storage capacity

7,610 GWh

Injection capacity

3.75 GWh/hour

Send-out capacity

7.25 GWh/hour


Discover our Loenhout site

Indicative 10-year Investment Plan

The indicative investment plan 2023-2032 sets out all investments needed to keep up with changes in Belgium's natural gas market (taking into account new West-East flow patterns), maintain and upgrade the infrastructure of Fluxys Belgium and Fluxys LNG.

The investments described in this document are provided for reference purposes only and relate to gas transmission and storage infrastructure in Belgium as well as to the Zeebrugge LNG terminal.

Fluxys is committed to ensuring that new major investments are compatible with the energy transition either by reducing its carbon dioxide emissions, or by building new infrastructure that is hydrogen compliant.

An annex detailing the outlook beyond the current framework of the Belgian Gas Act has been appended to the indicative investment plan 2023-2032, which was drawn up in accordance with Article 15/1, §5 of said Act.

This annex sets out the future development of hydrogen and CO2 transmission systems in Belgium, which will be based in part on the reuse of Fluxys Belgium's natural gas transmission infrastructure. The framework governing the development of such transmission systems will be devised in the years to come, and investments will depend on changes in needs as well as technical opportunities.


Download the indicative investment programme 2023-2032 (PDF 1.4MB)

cover TYNDP 2023-2032 English

Construction works near our infrastructure?

For all your questions about the Fluxys infrastructure, how to notify about works or how to implement the correct safety measures.


  • Questions for Fluxys Belgium?
  • Fluxys Belgium
    Avenue des Arts 31, B-1040 Brussels
    +32 2 230 02 39