1. ISAS Liaison Report October 25-26, 2007 MIC Meeting

2. 2 ISAS Liaison Report Discussion Topics: Tagging Under MRTU JISWG Update Interchange Authority Discussion ESWG Update

3. 3 ISAS Liaison Report Tagging Under MRTU Presentation by Kyle Hoffman, CAISO Manager of Scheduling CA software – implemented Feb, 2007 Automates e-tag approval, validation and correlation to SI transmission market reservation and curtailments; and Integrated Forward Market (IFM) power flow optimization reducing real-time congestion.

4. 4 ISAS Liaison Report Tagging Under MRTU CA software misc. data field info. – Old system – manual, new – automated; Auto-validation e-Tags with CAISO SI market reservations; Provide market notices to participants; and Training P/S and RT – provided tagging templates via website.

5. 5 ISAS Liaison Report JISWG Update e-Tag timing tables Split (one for WECC and one for all other regions); and Built-in definitions for time classification elements (e.g., on-time, late, etc). e-Tag 1.8 changes Basic features of e-Tag 1.8 are much the same as in the current version, 1.7097. Tag author uses agent service to create/submit Authority service validates requests and manages approval process Approval services used to assess, approve and submit changes

6. 6 ISAS Liaison Report JISWG Update Request State Changes: 1.70971.8 Pending ImplementedApproved DeadWithdrawn Denied Expired

7. 7 ISAS Liaison Report JISWG Update Individual Approval States: 1.70971.8 NA Pending Approved Denied Study Expired

8. 8 ISAS Liaison Report JISWG Update Composite State Changes: 1.70971.8 Pending ImplementedConfirmed Implemented DeadCancelled Terminated Withdrawn Denied Expired

9. 9 ISAS Liaison Report JISWG Update Composite State Changes Indicates the overall state of the e-Tag Does not go to Implement until ramp is started 1.8 formalizes the time classification Authority service assigns based on the relative start and submittal times On-Time Late After-the-fact

10. 10 ISAS Liaison Report JISWG Update Other new capabilities Terminate ATF e-Tags if a mistake is made; Dynamics and ATF e-Tags can be submitted for start times up to 168 hours in the past; and Pseudo Tie transaction type – optional use, not mandatory – treatment determined by user and software vendor. ftp://www.nerc.com/pub/sys/all_updl/oc/jiswg/e-Tag_1- 8_tutorial_rev10.ppt#277,21,e-Tag 1.8

11. 11 ISAS Liaison Report Interchange Authority Discussion OC requested ISAS to discuss and make a recommendation on identifying the IA for the WECC. Discussion IA standards are vague White paper developed describe the IA in the WECC. WECC banded together to create a common authority service - WIT Who registers as IA in the WECC? What happens if the WIT fails to distribute arranged interchange? Who pays penalties?

12. 12 ISAS Liaison Report Interchange Authority Discussion ISAS voted on the following motion: WECC provides its membership the IA functionality through the WIT and is the contract holder of the WIT. As a member driven organization, we recommend WECC register as the Interchange Authority. Motion passed: 34-0-3 Basis: NERC Functional Model, Version 3, technical document, page 39.

13. 13 ISAS Liaison Report ESWG Update Outstanding issue – some dynamic e- Tags not updated after the hour. INT-BPS-008, WR4 – energy profile updated within 60 minutes after the completion of the operating hour. 96 hour update for ATF to settle out. e-Tag 1.8 will help resolve this issue – BAs can perform the update as well as the LSEs.

14. 14 ISAS Liaison Report 2007 Next ISAS Meeting November 7-8, Scottsdale, AZ ______________________________ Questions???? Contact Information Duane Helderlein dhelderlein@tristategt.org 303-254-3501