ENTSOG BAL NC Monitoring Report 2016

Annex V: Daily Imbalance Charge

(Chapter V of the BAL NC)

Table 5.1: Overview of Daily imbalance charge, Interim imbalance charge

and Tolerance implementation

OVERVIEW OF DAILY IMBALANCE CHARGE, INTERIM IMBALANCE CHARGE AND TOLERANCE IMPLEMENTATION

Daily imbalance charges provisions

(art. 19–23) implemented by

1 October 2016.

Implemented

AT, BE/LU, CZ, DE, DK, ES, FR, IT, HU, NL, PL, PT, SI, UK-GB

Partially implemented

EE, LT

Under development

Interim imbalance charges implemented/planned implementation

(art. 49).

, EL, IE, PL (L-gas and TGPS), RO, SE, SK, UK-NI

Tolerances implemented (art.50).

BG, EL, IE, LT, PL (H-gas), RO, UK-NI

1) Bulgaria plans to implement the interim imbalance charges during 2017.

Table 5.2: Details on reported adaption of daily imbalance quantity calculation

DETAILS ABOUT HOW THE CALCULATION OF THE DAILY IMBALANCE QUANTITY IS IMPACTED BY THE LINEPACK FLEXIBILITY SERVICE OR

BY THE ARRANGEMENTS IS IN PLACE WHEREBY NETWORK USERS PROVIDE GAS TO THE SYSTEM PER COUNTRY.

Linepack flexibility service

Only linepack flexibility service effects the calculation of daily imbalance quantity. Daily imbalance quantity is lowered by the individual

daily amount of linepack flexibility allocated to a network user.

GTS offers a linepack flexibility service (and where shippers get an invoice for) in such a way that the outcome of the calculation for the

daily imbalance quantity is always zero. As that is the case, the daily imbalance charge is consequently also always zero.

The linepack flexibility service allows a daily deviation between inputs and off-takes to the maximum subscribed value, without imbalance

charge;

The gas in kind used by the TSO for the operation of the system, is supplied by each Network User in proportion of its consumptions.

Inputs to and off-takes from the linepack flexibility service are parts of the calculation of daily imbalance quantity

Arrangements is in place whereby network users provide gas to the system

Any purchase or sale of balancing gas is taken into account: when TSO buys from Network User accounted as offtake, when TSO sells to

Network user accounted as input.

UFG is considered in the calculation of the balancing position of each NU. The system's UFG, which is small percentage of the actual

offtakes (~0.15%), is allocated to each NU proportionally to its daily offtakes.

On the day after the gas day, Enagás in its role of the Technical Manager of the System calculates each user's provisional imbalance for

the gas day as the difference between the user's inputs and off-takes in the network during the gas day. The calculation of the daily

imbalance quantity takes into account the unaccounted gas

A Network User shall be obliged to provide the TSO with gas for the operation of the transmission network, and this for every entry point

to and every exit point from the transmission network.

ENTSOG BAL NC Monitoring Report 2016 |