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XRN 4691
CSEPs: IGT and GT File Formats (CGI Files)

Last Updated
03 Jun 2020
Release Type
Implementation Date
Proposer Wales & West Utilities Impacted DSC service area

Service area 10 (Previous Dec 18 – Mar 21)

Connected system exit points

Customer Change Team Leader


New Fields added to the CGI file

a. Nested CSEP Indicator

b. Parent CSEP ID

c. CSEP Hierarchy Level – NEW Data Item

d. CSEP Level – NEW Data Item

e. CSEP Connection Max AQ (provided by GT)

f. Connection Date – as provided by the GT within the DCI file


Increase Breach Figure from 85% to 101% - Having the breach figure at 85% in practice means, that all completed CSEPs that have an AQ between 85%-100% (which they should do), generate a CGI file every time the AQ is recalculated on receipt of meter readings. By raising the breach figure to 101%, attention will be focused on those CSEPs that are actually breaching the contracted CSEP Connection Max AQ.


Impacted Customer Types

  • IGT
  • DNO


Initial Review
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Status Awaiting
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Solution Consultation
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Awaiting Delivery
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In Delivery
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