Market Metrics Working Group 2006 Accomplishments 2007 Goals Chair – Bill Reily – TXU Electric Delivery Vice Chair – Kyle Patrick – Reliant Energy Kyle Patrick – Reliant Energy

Accomplishments 2006 Worked with ERCOT to review and identify Metrics for MarkeTrak reporting Worked with ERCOT to review and identify Metrics for MarkeTrak reporting Developed a Market Survey to poll market participants on current metrics reporting to: Developed a Market Survey to poll market participants on current metrics reporting to: Determine most / least beneficial reports Determine most / least beneficial reports Evaluate the file transfer processes for reporting Evaluate the file transfer processes for reporting Provide PUCT staff with market input on current metrics to assist in the formulation of the new Performance Measures Rulemaking. Provide PUCT staff with market input on current metrics to assist in the formulation of the new Performance Measures Rulemaking. Continued working with PUCT Staff to improve timeliness of filings by market participants Continued working with PUCT Staff to improve timeliness of filings by market participants

2007 Goals Continue to provide summarized updates of the overall market performance to RMS Continue to provide summarized updates of the overall market performance to RMS Continue working with PUCT Staff to: Continue working with PUCT Staff to: Provide assistance in evaluating current “transactional” reporting and input into the development of the new Performance Measures rulemaking Provide assistance in evaluating current “transactional” reporting and input into the development of the new Performance Measures rulemaking Improve timeliness of filings by market participants Improve timeliness of filings by market participants Recommend a standardized file transfer process for current and future metrics reporting Recommend a standardized file transfer process for current and future metrics reporting Develop metrics for MarkeTrak reporting Develop metrics for MarkeTrak reporting Evaluate the frequency of meetings to ensure effective resource utilization and maximizing market participation Evaluate the frequency of meetings to ensure effective resource utilization and maximizing market participation Evaluate quarterly market metrics to identify gaps and/or transactional issues Evaluate quarterly market metrics to identify gaps and/or transactional issues