Natural gas with high-calorific value and low-calorific value

The network for high-calorific gas (H network)

Belgium’s supply of high-calorific gas (H) comes from LNG producing countries and sources in the North Sea and Russia. The H network supplies the provinces of East and West Flanders, most of the provinces of Hainaut, Namur and Liège and much of the province of Limburg.

 

The network for low-calorific gas (L network)

Belgium’s supply of low-calorific gas (L) comes from the Slochteren field in Groningen in the Netherlands, which is why it is known as ‘Slochteren gas’. The L network supplies part of the Brabant and Antwerp region, as well as parts of Limburg and Hainaut.

Partial shift from low-calorific gas to high-calorific gas in the long term

Future supply of low-calorific natural gas in Belgium is dependent, among other things, on changes in suppliers’ purchase contracts and the remaining lifetime of the Slochteren gas field in the Netherlands. Against this backdrop, the Federal Public Service Economy has set up a Task Force comprising Fluxys, distribution system operators, natural gas suppliers and the authorities. The Task Force's role is to take stock in the medium term of security of supply with regard to low-calorific natural gas in Belgium. Based on the conclusions drawn, various paths will then be examined. One of the first points noted by the Task Force is that the shift from low-calorific to high-calorific natural gas is already under way in the province of Limburg. This shift will require multilayered investment and action involving Fluxys as well as the distribution system operators, suppliers, grid users, regulators and system operators in neighbouring countries.

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