Below follows an explanation of what damping is, what purpose it serves and who can and/or is required to apply damping. On this page we also publish the damping formula and alpha parameter for the current gas day and next gas day.
Due to the linepack (buffer effect) in our network, it is possible that a change in the gas flow on the exit side of our network will be followed at a later moment by a damped change in the gas flow on the entry side of our network. This is called damping. This means that on an hourly basis, entry and exit are not equal (entry minus exit is not zero). The amount of damping that must be applied varies from day to day and from hour to hour and is determined by the damping formula. On a daily basis, the sum of all hourly entries and sum of all exits have to be equal (entry - exit = 0).
Actual damping parametersLast update: 24-04-2017 09:07:31 hour
Historical damping parameters
It is also possible to download a historical CSV file containing the alpha parameter for the past 31 days.
To whom does damping apply?
Damping is obligatory to parties responsible for acknowledged programmes who wish to transport gas to small-scale users. They are expected to apply damping to their exit programmes.
Damping is optional for parties responsible for acknowledged programmes who have physical exit points in their portfolio. Damping cannot be applied in portfolios that only have TTF transactions and/or trading programmes.
If you want to change the status of a portfolio (and start or stop the application of damping), please notify us by e-mail at least 10 working days in advance.
This is a formula which reflects the transport characteristics of the network and which is dependent on the demand for transport. This formula is not the same for every day, as it has one parameter, known as alpha, which will be adjusted every day. The formula including the parameter will be published on our website at 09:00 hours on the day prior to the day of transport.
By changing the alpha parameter, the intention is to change the amount and time delay of the damping in such a way that the network is filled in a varied manner throughout the day, which fits in with the performance and possibilities of the gas transport system. This means that the amount of linepack (buffer) available to the market as Green Zone is maximised as much as possible.
The file “Example of Damping Formula” contains a sample calculation of the damping formula. Users can enter their own values for the exit flow and calculate the associated required entry flow. The file "Use of the damping formula" contains an explanation of the formula.