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Mod 124

Mod 124. Steve Nunnington. History of the 10 day rule. 10 day rule covered in M 3.3.4 System capacity of 400,000 meter reads per day as set out in UK Link manual. Problems in 2003. Meter read submissions start to increase rapidly.

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Mod 124

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  1. Mod 124 Steve Nunnington

  2. History of the 10 day rule • 10 day rule covered in M 3.3.4 • System capacity of 400,000 meter reads per day as set out in UK Link manual. • Problems in 2003. • Meter read submissions start to increase rapidly. • 3 days in August saw meter read submissions exceed 1 million mark. • Caused massive problems as batch schedules overrun. • Initially functionality introduced to reject files above the 400,000 figure. • Eventually introduced changes to rollover meter read files. • M 3.3.4 wasn’t used prior to CTP Mods • New Mods to introduce PP opening read estimates and AMR reads • CTP Mods to introduced OSER and POS reads • Increases potential number of reads which could be submitted

  3. History of M 3.3.4 • Mod 693 introduced to restrict amount of meter reads which could be submitted per MRF. • It was decided to invoke M 3.3.4 to protect UK Link and was communicated to the Workstream. • Main issue is stockpiling of reads. • Shipper issues identified following delivery of CTP Mods and subsequent implementation of 10 day rule. • Shippers had historical meter reading backlogs. • xoserve relaxed M 3.3.4 to 99 days for period of 3 months • March to June 2006. • Involved agreed schedule of submission • Rollover of meter read files daily with weekend catch up. • Major issues encountered on UK Link • Not sustainable in the long term • In June 2006 M 3.3.4 re-instated.

  4. Benefits of Mod 124 • Allows xoserve to receive more meter reads. • Improves AQ values. • Allows more reconciliation to take place. • Helps with demand attribution. • Makes Energy balancing more robust. • Has benefits for shippers in terms of validation timescales.

  5. The proposal • xoserve systems cannot currently support a window of 20 days. • Allows reads to be stockpiled and the 400,000 limit exceeded. • Examples before the Mods where in a single month meter read submissions exceeded 1 million per day on 3 occasions. • Potentially could mean a perpetual rollover with no catch up. • May affect Opening Read window due to rollover. An xoserve estimate could be issued when an actual read has been submitted.

  6. The Way Forward • xoserve systems can handle a window of 15 days and would propose this as a transitional measure. • UK Link refresh will mean improved processing speeds. • Potential to increase the 400,000 maximum. • Move to 20 days post refresh. Initially on a trial basis. • UK Link Refresh planned for November 2007.

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