Quality conversion

Convert high calorific gas (H gas) into low calorific gas (L gas) or convert low calorific gas (L gas) into high calorific gas (H gas).


Supply end users in the H gas area with your L gas area entry capacity or vice versa.

Easily transfer gas from one area to another with our quality conversion service.


Which services can you book?

L to H conversion

  • Convert L gas from the L gas area into H gas.
  • Interruptible capacity

H to L conversion

Convert H gas from the H gas area into L gas.


H to L baseload and seasonal load

  • Available all year round
  • Ideal for supplying end users in the L gas area
  • Firm capacity


H to L peakload quality conversion

  • Ideal for coping with peak periods with increased demand for L gas during the winter months (from 1 November to 31 March).
  • To be booked in bundles with partly firm capacity and partly interruptible capacity.

How to book this service?

L to H conversion

Through PRISMA for a minimum period of 1 gas day. Capacities are allocated on a “first-committed-first-served” basis.


H to L conversion

  • Initially during a subscription window
    o Capacities will be allocated on a pro rata basis
    o Baseload and seasonal load for one gas year at a time (from 1 October to 30 September)
    o Peakload for one or more gas year(s)

  •  After the subscription window via written request on a “first-committed-first-served” basis
    o End date of the services is always 30 September

How does the subscription window work?

  • You will receive an email with an application form, the available quantities and the specific conditions applying to the subscription window.
  • Return the completed application form to info.transport@fluxys.com.
  • At the end of the subscription window, capacities will be allocated on a pro rata basis based on the requested quantities.


How does the written request work?

More information about booking Quality Conversion.

Check our tariffs