Update to RMS December 8, 2010

1. Update to RMS December 8, 2010 TX SET & TTPT

2. Texas SET 4.0 Change Controls 706 718 720 722 733 734 • 735 • 736 • 737 • 738 • 739 • 740 • 741 • 742 • 743 • 745 • 746 • 747 • 748 • 749 • 751 • 752 • 753 • 754 • 754 • 755 • 756 • 757 • 758 • 759 • 760 • 761 • 762 • 764 • 765 • 766 • 767 • 726 • 750 • 768 • 769 • 770 2

3. Texas SET 4.0 Change Controls 706 – TX SET guide for 814_24 allows a Communication Number Qualifier of “EM” for Electronic Mail. 718 – ERCOT cancel 814_24 MVOs with receipt of the 814_04 scheduling a new MVI instead of with receipt of the MVI 720 – Add code A78 “Item or Service already Established (Requested action has already completed)” as a valid reject reason to the 814_29 3

4. Texas SET 4.0 Change Controls 722 – Designate Originating Tran ID and Estimated Restoration Date required only when purpose code = 79 and Suspension/Reactivation code = RC001 733 – Discontinue use of the following transactions submitted to ERCOT by a CR: 814_07, 814_09, 814_13, 814_15, 814_19, 814_21, 814_23 and 814_29 734 – New REF Segment to the 814_20 with Switch Hold Add and Removal and new Reason for Chagne added to the REF~TD segement to support Meter Tampering Rulemaking 4

5. Texas SET 4.0 Change Controls 735 – During Mass Transition, the POLR CR will be notified that an ESI ID had a Switch Hold prior to MT 736 – To reject a MVI or Switch which currently has a Switch Hold, a new reject code (SHF) will be added 737 – In order to support Meter Tampering Rule, changes were added to the 650_01 and 650_02 to communication Switch Hold Disconnect and Reconnect 5

6. Texas SET 4.0 Change Controls 738 – New Critical Care status designations are required when Critical Care = Y and additional Contact Information is required for certain CC status 739 – Changes required to the 814_PC for TDSPs to receive customer contact information for power outages and service restoration 740 – If 814_27 received with REF~1P~HUU, ERCOT should close the Business Process Instance and 867_02 should not be expected by the CR or ERCOT 6

7. Texas SET 4.0 Change Controls 741 – Add Priority Code to 814_24 to allow same day MVO requests to be processed at different level from standard 742 – Add new reject code (ACR – Acquisition Cancel Reject) to be used when CR submits an 814_08 on a Acquisition 743 – Add new reject code (CW1) for use when a CR submits an 814_08 or 814_12 within 1 day of Scheduled Meter Read 7

8. Texas SET 4.0 Change Controls 745 – Add ability for a TDSP to Complete Unexecutable a Switch 746 – TX SET Guide changes by transaction to support Acquisition Transfer 747 – To provide REPS information on whether ESI ID has a provisioned Advanced Meter installed, new REF segment added to 814_04, 814_05, 814_14, 814_22 and 814_20 8

9. Texas SET 4.0 Change Controls 748 – Sync names of the Texas SET Guide transactions with the name of the transaction in Protocol and the Retail Market Guide 749 – Explanation of the 2 options for the REF~IK segment in the 810_03 transaction 751 – Adding new codes Force Majeure Event (FME) and Weather Moratorium (WTM) 9

10. Texas SET 4.0 Change Controls 752 – Remove incorrect link for locating ISO country codes from TX SET implementation guides 753 – Create new code in the 650_01 and 650_02 transactions that will allow a CR to notify TDSP when customer has installed generation equipment 754 – Add new code to allow a CR to notify a TDSP when a customer has an Electric Vehicle as an end-use device 10

11. Texas SET 4.0 Change Controls 755 – In order for TDSP to send discretionary charges due to tampering a new type code added to the 810_02 756 – Cleanup after 3.0A to have off-cycle updated to reflect self selected 757 – Missed 814_20 transaction left out on CC 738 for new Critical Care status when Critical Care = Y and additional contact information required for certain status 11

12. Texas SET 4.0 Change Controls 758 – Changes to MIMO rules (Solution to Stacking) to allow TDSP to reject an 814_08 cancel with cancel codes of A81, MPC and MOX 759 – Add new REF segment to 814_16, 814_24 and 814_03 to provide key information to the TDSP about a condition that might affect execution of a MVI, MVO or MVO to CSA 760 – Add new code in ESI ID Attributes to specify LED bulb types for Unmetered Service 12

13. Texas SET 4.0 Change Controls 761 – Add to the existing REF02 of the REF~PRT the “WF” code to represent Wi-Fi 762 – Discontinue use of the 650_05 response 764 – Add expiration date to Special Needs designation 13

14. Texas SET 4.0 Change Controls 765 – Add Critical Care Statuses to indication Temporary Critical Care and Temporary Chronic Condition 766 – Add new code (T0123) to the REF~G7 for Move Out related as a force off due to MVI Scheduled for the same date 767 – Add reason code to the 814_20 to indicate an update to the Expiration Date for the Special Needs indication 14

15. Texas SET 4.0 Change Controls 726 – Add SAC 04 code for Energy Efficiency Cost Recovery Factor (EECRF) from TDSP base rates 750 – Additional SAC 04 codes for the 810_02 768 – Adding clarifying language to indicate that Switch Hold Indicator for POLR is only applicable to Tampering Switch Holds 15

16. Texas SET 4.0 Change Controls 769 – Clarification to language around Switch Hold add/remove in the 650_01 and 650_02 770 – New code to allow for Complete Unexecutable when TDSP places a Switch Hold on an ESI ID 16

17. Texas SET 3.0A IMPLEMENTED NOVEMBER 30TH 17

18. RMGRRs RMGRR 091 – Accelerated Disconnect and Reconnect for Customers with Advanced Meters At TAC for consideration on Dec 6th RMGRR 092 – Change to Implement an Interim Solution for Critical Care Status and Secondary Contact Information At TAC for consideration on Dec 6th 18

19. Texas SET 4.0 Requirements: Transactional solution for Tampering and DPP Switch Holds Critical Care Indicator Changes Transfer due to Acquisition Changes to take advantage of Advanced Meter Implementation Outstanding Texas SET Change Controls 19

20. The next TX SET/TTPT meeting will be November 15th Conference Call and December 6th Regular Monthly MeetingAny questions? 20