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Global Aggregation

This document outlines recent updates to Global Aggregation policies as discussed in the ESB CS meeting. A revised draft of Option E has been circulated, which incorporates necessary changes, including provisions for Error Supplier Units. The calculation methodology for Residual Error Volumes aligns with the adopted section 7 algebra. Additionally, explicit definitions for AINDeh and ANINDeh have been established to facilitate clear documentation in the PIR. Various demand adjustment metrics are outlined to support transparency and operational effectiveness across jurisdictions.

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Global Aggregation

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  1. Global Aggregation • Mod 34.09 raised by ESB CS at Mods Meeting 24 (29.09.09) • Draft of Option E version circulated in mid August • Revised version submitted formally on September 1st 2

  2. Global Aggregation • Drafting allows for Error Supplier Unit as required by Licence • Means where Error Supplier Unit exists, option E rules do not impact • Allows for implementations in each jurisdiction to progress separately 3

  3. Global Aggregation • Adopts the section 7 algebra for the calculation of values • Calculation of Residual Error Volume is the same calculation, with the inclusion of the Error Supplier Unit volumes. 4

  4. Global Aggregation • Calculations of AINDeh and ANINDeh explicitly defined in the modification • This is done to facilitate publication of these values in the PIR. 5

  5. Global Aggregation • Changes from draft – • explicit calculation of AIND/ANIND • Renaming of IEP to NIEP • Specification of NDA as distinct variable means Participants can see demand value as separate item from Participant portion of Residual Error Volume . 6

  6. Global Aggregation • For inclusion in PIR • Non-Interval Energy Proportion • Net Demand Adjustment (NDAvh) • Loss-Adjusted Settlement Net Demand (SNDLFvh) • Aggregate Interval Net Demand (AINDeh) • Aggregate Non Interval Net Demand (ANINDeh) 7

  7. Global Aggregation • For inclusion in PIR • Non-Interval Energy Proportion • Net Demand Adjustment (NDAvh) • Loss-Adjusted Settlement Net Demand (SNDLFvh) • Aggregate Interval Net Demand (AINDeh) • Aggregate Non Interval Net Demand (ANINDeh) 8

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