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TAR NC Implementation Document – Second Edition September 2017
ARTICLE 3(10) HOMOGENEOUS GROUP OF POINTS
Responsibility: subject to consultation per Article 26(1) by TSO/NRA, as NRA
decides; subject to decision by NRA
A homogeneous group of points is a group of points sharing common characteris-
tics. The TAR NC specifies an exhaustive list of homogeneous groups of points.
A homogeneous group of points may be composed of points of only one of the
following categories: entry IPs, exit IPs, domestic entry points, domestic exit points,
entry points from storage facilities, exit points to storage facilities, entry points from
LNG terminals, exit points to LNG terminals, and entry points from production facil-
ities.
The concept of homogeneous groups of points appears in the definitions of ‘cluster’
in Article 3(19) and ‘equalisation’ in Article 6(4)(b).
Homogeneity does not necessarily imply identical network use at all points within a
homogeneous group. Article 5 on CAA distinguishes between intra-system and
cross-system network uses. For example, an entry point from storage ‘A’ may flow
gas that will serve mostly ‘cross-system use’, while an entry point from storage ‘B’
may flow gas mostly for ‘intra-system use’. Despite such a difference in use, all entry
points from storage facilities may be considered as a homogeneous group.