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.
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Network length |
4,000 km |
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Border interconnection points |
Interconnection points with all adjacent markets: UK, France, The Netherlands, Germany and Luxemburg |
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Network connection points in Belgium |
Connections with 17 Distribution System Operators Connections with 230 industrial sites and gas-fired power stations |
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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 have proactively switched end-users of low-calorific natural gas to high-calorific natural gas, as of September 2024.
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.
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Maximum technical capacity Regasification capacity Transshipment capacity Storage capacity Send-out capacity |
197 TWh/year (17 bcm) 107 transshipments (214 ships)/year 566,000m³ of LNG (5 storage tanks) 30.2 GWh/hour |
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LNG carriers received since |
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.
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Storage capacity |
7,610 GWh |
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Injection capacity |
3.75 GWh/hour |
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Send-out capacity |
7.25 GWh/hour |
Indicative investment plans 2025–2034: Natural gas & hydrogen
Fluxys is committed to shaping Belgium’s energy infrastructure for a sustainable future. In line with the energy transition and evolving market needs, we have published two indicative investment plans for the period 2025–2034: one for natural gas and one for hydrogen. These plans provide transparency on anticipated infrastructure developments while remaining adaptable to future changes.
Indicative investment plan for natural gas
The Indicative 10-Year Investment Plan for Natural Gas outlines the investments required to:
- Maintain and upgrade Fluxys Belgium’s transmission and storage infrastructure, as well as the Zeebrugge LNG terminal.
- Support Belgium’s natural gas market evolution while meeting greenhouse gas (GHG) reduction targets for our installations.
- Ensure new major investments are compatible with the energy transition, either by reducing emissions or by enabling multipurpose infrastructure.
This plan is prepared in accordance with Article 15/13, §2-3° of the Gas Decree (April 12, 1965).
Please note: Compared to previous editions, hydrogen and CO₂ infrastructure investments are no longer included here. Separate documents address these areas in line with updated regulatory frameworks. The Indicative 10-Year Investment Plan for CO₂ is in production.
Indicative investment plan for hydrogen
As Belgium’s designated Hydrogen Network Operator (HNO), Fluxys has published its first Indicative 10-Year Investment Plan for hydrogen for 2025–2034. This plan:
- Identifies the most mature transport infrastructure needs to connect hydrogen supply and demand, both domestically and for import/transit.
- Serves as input for the hydrogen transmission tariff proposal (2026–2028) and for Fluxys’ re-certification as HNO under updated EU regulation (Directive 2024/1788, Regulation 2024/1789).
- Provides a non-binding, evolving framework based on market consultations, ensuring transparency while remaining flexible to future developments.
Prepared under Article 14 of the Federal Hydrogen Law (Belgian Official Gazette, 25 July 2023), this document is an interim network development plan ahead of the official proposal due by 1 July 2027.
View the indicative investment plan for natural gas 2025-2034 (PDF 2.3MB)
View the indicative investment plan for hydrogen 2025-2034 (PDF 500KB)
Construction works near our infrastructure?
Whether you're planning construction works near our pipelines or simply seeking clarity on safety protocols, this page is your go-to resource. Here, you'll find everything you need to:
- Notify Fluxys about upcoming works near our infrastructure.
- Understand the safety measures required to protect yourself, your property, and the integrity of our network.
- Access technical guidelines and legal obligations for contractors and project managers.
- Coordinate effectively with Fluxys teams to ensure secure execution of your project.
We’re committed to helping you carry out your works safely.
- Questions for Fluxys Belgium?