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Reduction of MMS Vendor Effort for TPTF December 17, 2007 Murray Nixon

Reduction of MMS Vendor Effort for TPTF December 17, 2007 Murray Nixon. Agenda. Key driver for proposed changes Process for identifying changes Proposed changes impacting MPs Request feedback from TPTF. Key Driver for Proposed Changes.

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Reduction of MMS Vendor Effort for TPTF December 17, 2007 Murray Nixon

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  1. Reduction of MMS Vendor Effort for TPTF December 17, 2007Murray Nixon http://nodal.ercot.com 1

  2. Agenda • Key driver for proposed changes • Process for identifying changes • Proposed changes impacting MPs • Request feedback from TPTF http://nodal.ercot.com 2

  3. Key Driver for Proposed Changes • Ensure the final MMS FAT completes by 30Jun08, allowing 2 months for integration & EDS4 activities prior to the 168 hour test start on 1Sep08 • Previous schedule proposed a FAT start date of 1Jul08 for the S&B calculations release & a FAT start date of 1Sep08 for the multiple models release • Most S&B calculations can be moved forward into the last release (FAT start date of 22Apr08; FAT end date of 30Jun08) • Multiple models and several other tasks can not be incorporated into the last release http://nodal.ercot.com 3

  4. Process for Identifying Changes • Joint review of all pending change items by MMS & ABB teams • Define scope changes (as directed by ERCOT & ABB execs) as: • ABB reductions (e.g., decrease in PMO activities due to shortened timeline) • ERCOT to complete (e.g., user guides, selected S&B interface tasks) • recommended deferrals impacting ERCOT ops (e.g., tool to aid operations in validation of CIM importer results, configurable start & end time for WRUC’s study mode) • recommended deferrals impacting the MPs (see next page for itemization) • Parallel review activities: • MMS team review with ERCOT Ops • MMS team review with TPTF • ABB team review to determine schedule impacts • Prioritize recommended changes • Identify which deferrals must be made to achieve timeline • Finalize scope changes and communicate to ABB http://nodal.ercot.com 4

  5. Proposed Changes Impacting MPs • Multiple models • Two S&B information only calculations (DAOPTINFO & RTOPIRINFO) • Automated interface for QSEs with resources to update resource parameters (e.g. ramp rates) in MMS NOTE: Workaround will be through a manual process • Dynamically scheduled resource incremental and decremental energy offer curves http://nodal.ercot.com 5

  6. Request Feedback • Feedback from TPTF on proposed changes impacting MPs http://nodal.ercot.com 6

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