1. April 9, 2010 Meter Working Group EPS Meter Design Proposal And Generation Site Modeling & Mapping Joseph Bezzam Meter Engineer II

2. 2 Meter Working GroupApril 9, 2010 EPS Meter Design Proposal And Generation Site Modeling & Mapping

3. 3 Meter Working GroupApril 9, 2010 EPS metering design proposal approval, mapping, and cutover procedure has been changed in recent past due to upcoming Nodal market implementation. Overview:  When TDSP submits a new/revised design proposal, supervisor of Meter Engineering department would review and approve the design proposal.  If the approved design proposal is for generation facilities the associated EPS meters needs to be modeled in ERCOT Network Model Management System (NMMS).

4. 4 Meter Working GroupApril 9, 2010  ERCOT will send GENMAP package which contains information on mapping of EPS meter(s) to unit(s), resource node, Resource ID (RID) to Resource Entity (RE).  Resource Entity (RE) is required to review and signoff the verification form.  Once ERCOT receives RE sign off, proposed cutover date for generation sites will be send to TDSP.

5. 5 Meter Working GroupApril 9, 2010 Following are the changes from TDSP point of view  GENMAP is primarily for RE but there are some implications to TDSP  The requirement to submit design proposal 45 days in advance is critical - to provide ERCOT enough time to complete the modeling and mapping process.  Meter CT location and its connected devices (such as brakers and disconnect switches) are essential in modeling and we advice to send a detailed one-line drawing as part of design proposal.  Proposed cutover date for generation sites will be provided by Meter Engineering department to TDSP.  TDSP needs to confirm the cutover date with Meter Engineering department.

6. 6 Meter Working GroupApril 9, 2010 GENMAP Package  Need further explanation on GENMAP package please refer to GENMAP Registration Workshop Presentation (01/14/10,.ppt, 527.5 KB)  Any questions on GENMAP please call Wholesale Client Service Manager. They are the point of contact.

7. 7 Meter Working GroupApril 9, 2010 Q&A