Image of back arrow Back to filtered results

XRN 4717
Use of up to date Forecast weather data in first NDM Nominations

Last Updated
18 Feb 2019
Release Type
Implementation Date
16 Feb 2019
Proposer Total Gas and Power Impacted DSC service area

Service Area 15 (Previous Dec 18 – Mar 21)

Demand Estimation

Customer Change Team Leader


Use of Up to Date Forecast Weather Data in First NDM Nominations Run – Delivery of this change will amend SAP ISU to allow additional weather data to be accepted and loaded in readiness for the 8:00am forecast. SAP ISU will calculate the Composite Weather Variable (CWV) and send this information (including the Composite Weather Variables for the following gas day) via an internal file which passes between SAP ISU and Gemini at 8:00am. These values will be picked up in the Non Daily Metered (NDM) Nomination run at 11:00am and published externally in Gemini.

Impacted Customer Types

  • Shipper
  • DNO


Document title Last updated Type
BER For MiR Drop 3 XRN4690 & XRN4717 15/Mar/2019 PDF
XRN4717 CP 15/Jan/2019 PDF


Initial Review
Solution Consultation
Awaiting Delivery
In Delivery

Contact the Change Team

Need to get in touch with a member of the Change Team?

You can email us at: and we'll get back on the same day between the hours of 9:00am to 4:30pm.