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Day-Ahead External Node Net Commitment Period Compensation (NCPC) Related Language Changes

Day-Ahead External Node Net Commitment Period Compensation (NCPC) Related Language Changes. Markets Committee September 22, 2009 Jinye Zhao, Market Development. Background.

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Day-Ahead External Node Net Commitment Period Compensation (NCPC) Related Language Changes

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  1. Day-Ahead External Node Net Commitment Period Compensation (NCPC) Related Language Changes Markets Committee September 22, 2009 Jinye Zhao, Market Development

  2. Background • In Feb 2009, FERC accepted the rule changes regarding the allocation for Day-Ahead NCPC for External Transactions proposed by the ISO. • The settlement software which implements the revision was put into production in August 2009.

  3. Approved Rule Changes • Change the allocation of External Node NCPC charges from all Day-Ahead Load Obligations to the load at the external location as defined by the prevailing flow; • Change the method for calculating the allocation of NCPC at external locations from a 24-hour commitment period basis to an hour-by-hour basis; and • Make virtual transactions eligible for NCPC credits and charges at the External Node.

  4. Why Need Language Changes? • Current language in some Market Rule sections has been identified that is not consistent with the approved rule changes. • The  proposed language changes do not modify the market design and have no impact on settlement implementation.  

  5. Issue 1 • Include virtual transactions into the calculation of Day-Ahead NCPC credits at external nodes.

  6. Issue 2 • Clarify the allocation of Day-Ahead NCPC charges associated with External Nodes • Section III.F.2.3.6: For each External Node, the Day-Ahead External Transaction purchase Credits for each External Transaction purchase or Increment Offer cleared in each hour are allocated to the Day-Ahead External Transaction sales or Decrement Bids cleared in the hour at that External Node.  • Section III.F.2.4.6: For each External Node, the Day-Ahead External Transaction sale Credits for each External Transaction sale or Decrement Bid cleared in each hour are allocated to the Day-Ahead External Transaction purchases or Increment Offers cleared in the hour at that External Node.

  7. Issue 3 • Exclude external transactions (physical and virtual) from the calculation of the daily total Day-Ahead economic and Local Second Contingency Protection Resource NCPC costs.

  8. Issue 4 • Clarify the hourly allocation of Day-Ahead Local Second Contingency Protection Resource NCPC charges and Day-Ahead economic NCPC charges associated with External Nodes

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