Texas Nodal Market Implementation Transition Planning Task Force Metric Framework Review Readiness Advisor January 24, 2006

Readiness Advisor AGENDA Progress to Date Review of Metric Framework ~ Metric Map and Metric List Metric Sub- Group Action Items

Readiness Advisor Progress to Date Metric Development Phase –Where we left off The presentment of the Metric Framework was re-scheduled to this date from the first week in January –Proceeded to meet with Metric assigned ERCOT Business Directors and Business Managers (Metric Owners): Conducted numerous (14+) Business Director / Manager (Owner) meetings presenting the proposed Metric Map and straw-man Metric Definition documents for discussion Most metrics have been assigned to Business Managers (owners) –Metric Development Underway High level approach to metric definition underway pending TPTF approval of the Metric Framework –Metric Framework Metric Map Metric List –Protocol Gap Analysis

CONTINGENCY (C) ERCOT INTERNAL (D) MARKET MONITOR (IMM) MARKET PARTICIPANTS (MP) COMMERCIAL (CO) CONGESTION REVENUE RIGHTS (CRR) MARKET MANAGEMENT (MMS) ENERGY MANAGEMENT (EMS) NETWORK MODEL MANAGEMENT (N) Border Legend: EDS 1 EDS2 EDS 3 EDS 4 SYSTEMS Texas Nodal Market Implementation Readiness Advisor Metric Map Metric Development January 18, 2007 DRAFTDRAFT Metric Received by RA Metric LTA Metric Approved Metric Defined Metric Verified Metric Late Metric in Definition Metric Fill Legend:

Readiness Advisor Metric List – Full Report Included -

Readiness Advisor Metric List by Director – Full Report Included -

Readiness Advisor Metric Definition Document – Example -

Readiness Advisor Metric Sub Group The primary mission of the Metric Sub Group (MSG) is to provide oversight and direction for the Readiness Advisor Initiative as it applies to the Texas Nodal Market Transition. The prime responsibility of the MSG is the ongoing oversight of the Metric Framework and to approve the Metric Definition Documents and any revisions or changes therein. A Metric Definition Document describes the intent of the metric, the timing and actions that must be completed and the identification of the sources of evidence to justify when the metric has met completion. It is assumed that new metrics will be submitted from time to time for the life of the Readiness Advisor Initiative The MSG should consist of market participants (ideally at least 2) from each of the market segments and an ERCOT representative ERCOT shall chair and provide administrative and technical support to the MSG

Readiness Advisor Metric Sub Group The MSG shall meet weekly (optionally in-person and Webex) beginning Wednesday January 30, 2007 on a day designated by the MSG members. The MSG shall provide the TPTF with a weekly update of its activities. Immediate items for the MSG to address: –Define a process for metric approval / revision –Address the proposed metric categories/list for approval / revision The Readiness Advisor Team will not be a voting member of the MSG but will attend each scheduled MSG meeting for solicited guidance

Readiness Advisor Next Steps Immediate Next Steps: Establish the Metric Sub Group for the first scheduled meeting on Thursday, January 30 th (meeting venue & time TBD) –Establish the MSG –Establish MSG rules for Metric approval and modification –Set agenda for review and confirmation of proposed metric list and metric map in a manner that will allow Metric Owners to begin detailed metric definition as soon as possible

Readiness Advisor Contacts Readiness Advisor Team Contacts: Don McCormick – Jesse Harmon –