Explanation network points

Explanation of the graphs and downloads

1) Firm Total (Entry/Exit) = the available firm capacity (Firm Available) plus booked firm capacity (Firm Booked) to transmit gas physically to or from a specific network point.

2) Firm Available (Entry/Exit) = the available firm capacity to transmit gas physically to or from a network point.

3) Firm Booked (Entry/Exit) = by all shippers contracted firm capacity (excluding wheeling) on a network point.

4) Interruptible Total (Entry/Exit) = the total interruptible capacity on a network point in the forward direction in accordance with Appendix 7 of the TSC.

5) Interruptible Available (Entry/Exit) = the available interruptible capacity (excluding interruptible wheeling) on a network point in the forward direction.

6) Interruptible Booked (Entry/Exit) = by all shippers contracted interruptible capacity (excluding interruptible wheeling) on a network point in the forward direction.

7) Total Backhaul = the total interruptible capacity on a network point in the counterflow direction in accordance with Appendix 7 of the TSC.

8) Available Backhaul = the available interruptible capacity (excluding interruptible wheeling) on a network point in the counterflow direction.

9) Booked Backhaul = by all shippers contracted interruptible capacity (excluding interruptible wheeling) on a network point in the counterflow direction.

10) Firm (Entry/Exit) allocated quantity = to all shippers allocated quantity on a network point which could be transmitted via firm contracts (excluding wheeling).
Provisional Firm (Entry/Exit) = the provisional firm allocated quantity.
The quantity is a total count on portfolio level based data.

11) Interruptible (Entry/Exit) allocated quantity = to all shippers allocated quantity on a network point which could be transmitted via interruptible contracts (excluding interruptible wheeling).
Provisional Interruptible (Entry/Exit) = the provisional interruptible allocated quantity.
The quantity is a total count on portfolio level based data.

12) Backhaul allocated quantity = to all shippers allocated quantity on a network point which could be transmitted via interruptible contracts (excluding interruptible wheeling) in the counterflow direction.
De Provisional Backhaul = = the provisional allocated quantity in the counterflow direction.
The quantity is a total count on portfolio level based data.

13) Total Booked = the contracted firm capacity (Firm Booked) plus contracted interruptible capacity (Interruptible Booked) on a network point.

14) Nominated Quantity = by all shippers ordered quantity to be transmitted to or from a network point.

15) Confirmed Quantity = by GTS confirmed quantity to be transmitted to or from a network point, based on nominated quantity.

16) Allocated Quantity = to all shippers allocated quantity on a network point to be transmitted via firm and interruptible contracts.

17) Initial Nominated Quantity = the quantity of the first confirmed nomination.

18) Initial Interrupted Quantity = the interrupted quantity of the first (wholly or partially) interrupted nomination. The first interrupted nomination is not necessarily equal to the first nomination.

19) Initial Interruptible Quantity = the interruptible quantity of the first interrupted nomination.

20) Interrupted Quantity of Last Nomination = the interrupted quantity of the last confirmed nomination.

21) Interruptible Quantity of Last Nomination = the interruptible quantity of the last confirmed nomination.

22) Nominated Firm (Entry/Exit) = by all shippers ordered quantity to be transmitted to or from a network point via firm contracts (excluding wheeling) in the forward direction.
The Confirmed Firm quantity is the quantity to be transmitted which is confirmed by GTS.

23) Nominated Interruptible (Entry/Exit) = by all shippers ordered quantity to be transmitted to or from a network point via interruptible contracts (excluding interruptible wheeling) in the forward direction.
The Confirmed Interruptible quantity is the quantity to be transmitted which is confirmed by GTS.

24) Nominated Backhaul = by all shippers ordered quantity to be transmitted to or from a network point via interruptible contracts (excluding interruptible wheeling) in the counterflow direction.
The Confirmed Backhaul quantity is the quantity to be transmitted which is confirmed by GTS.

General

Counterflow
Counterflow is a gas flow in the direction opposed to the physical flow direction of a specific network point.
Counterflow does not occur at network points that have two physical flow directions (Oude Statenzijl high calorific and Zelzate).

Mutual independence
The free capacity on some border points is mutual independent (´s Gravenvoeren/Bocholtz, Emden EPT/Emden NPT, Zevenaar/Winterswijk, Oude Statenzijl high calorific (Wingas/OGE/GUD/Renato/EWE) and Oude Statenzijl low calorific (EWE/GUD).

Update frequency
The graphs and downloads of the border points are updated daily (allocations, interruptions) or weekly (capacity).
Nominations and confirmations are published twice a day, approximately at 3PM LET and 10PM LET.

Explanation of symbols

Explanation of signs
Capacity and allocation always has a positive sign.
A nomination or confirmation that has a positive value stands for a gas flow that leaves the GTS gas transmission grid (exit flow), a negative value stands for a gas flow that enters the system (entry flow).

Used units

All values for capacity, nomination, confirmation, (provisional) allocation and interruptible/interrupted quantity have the unit m³(n;35.17) per hour of per gas day (Groningen gas equivalent).

Used file types

The format of the downloadable data is Microsoft Excel (.xls) or comma-separated in Microsoft Excel (.csv).