MARS Taskforce RMS Update January 19, 2011

Initial Settlement As of January 4, 2011 Operating Date: December 28, 2010 AMC ESI ID Totals: 2,167,790 AMDG ESI ID Totals: 325 Estimated Percentage: % As of January 4, 2011 Operating Date: December 28, 2010 AMC ESI ID Totals: 2,167,790 AMDG ESI ID Totals: 325 Estimated Percentage: % 2

Final Settlement As of January 4, 2011 Operating Date: November 8, 2010 AMC ESI ID Totals: 1,904,444 AMDG ESI ID Totals: 279 Estimated Percentage: % As of January 4, 2011 Operating Date: November 8, 2010 AMC ESI ID Totals: 1,904,444 AMDG ESI ID Totals: 279 Estimated Percentage: % 3

True-Up Settlement As of January 4, 2011 Operating Date: July 8, 2010 AMC ESI ID Totals: 1,077,607 AMDG ESI ID Totals: 135 Estimated Percentage: % As of January 4, 2011 Operating Date: July 8, 2010 AMC ESI ID Totals: 1,077,607 AMDG ESI ID Totals: 135 Estimated Percentage: % 4

AMS Meter Installation Status Report Oncor (approximately): Installed: 1,513,575 as of Deployment Plan: 2010 – 929,000 meters 2011 – 902,000 meters 2012 – 902,000 meters Oncor (approximately): Installed: 1,513,575 as of Deployment Plan: 2010 – 929,000 meters 2011 – 902,000 meters 2012 – 902,000 meters 5

AMS Meter Installation Status Report CNP (approximately): Installed: 950,101 as of Deployment Plan, includes projected growth: 2010 – 756,684 meters 2011 – 960,327 meters 2012 – 373,423 meters CNP (approximately): Installed: 950,101 as of Deployment Plan, includes projected growth: 2010 – 756,684 meters 2011 – 960,327 meters 2012 – 373,423 meters 6

AMS Meter Installation Status Report AEP (approximately): Installed: 182,173 as of Deployment Plan schedule: 2010 – 188,212 meters 2011 – 251,571 meters 2012 – 279,329 meters 2013 – 278,280 meters AEP (approximately): Installed: 182,173 as of Deployment Plan schedule: 2010 – 188,212 meters 2011 – 251,571 meters 2012 – 279,329 meters 2013 – 278,280 meters 7

Market AMS Installed Totals 8

PUCT Project Advanced Metering Implementation Team (AMIT) Documentation & Meeting Schedules can be found on: Public Utility Commission of Texas Project Website : rojects/34610/34610.cfm rojects/34610/34610.cfm Advanced Metering Implementation Team (AMIT) Documentation & Meeting Schedules can be found on: Public Utility Commission of Texas Project Website : rojects/34610/34610.cfm rojects/34610/34610.cfm 9

AMIT’s New Working Groups Operations and Maintenance Working Group (OMWG) 610/AMITMtg111610/WorkgroupScopeandProc edures-OperationsandMaintenance.pdf 610/AMITMtg111610/WorkgroupScopeandProc edures-OperationsandMaintenance.pdf Project and Strategy Working Group (PSWG) 610/AMITMtg111610/WorkgroupScopeandProc edures-ProjectsandStrategy.pdf 610/AMITMtg111610/WorkgroupScopeandProc edures-ProjectsandStrategy.pdf Operations and Maintenance Working Group (OMWG) 610/AMITMtg111610/WorkgroupScopeandProc edures-OperationsandMaintenance.pdf 610/AMITMtg111610/WorkgroupScopeandProc edures-OperationsandMaintenance.pdf Project and Strategy Working Group (PSWG) 610/AMITMtg111610/WorkgroupScopeandProc edures-ProjectsandStrategy.pdf 610/AMITMtg111610/WorkgroupScopeandProc edures-ProjectsandStrategy.pdf 10

AMIT’s New Working Groups Registration, Administration and Access Working Group (RAAWG) s/34610/AMITMtg111610/WorkgroupScop eandProcedures- RegistrationAdminstrationandAccess.pdf s/34610/AMITMtg111610/WorkgroupScop eandProcedures- RegistrationAdminstrationandAccess.pdf Security Working Group (SWG) s/34610/AMITMtg111610/WorkgroupScop eandProcedures-Security.pdf s/34610/AMITMtg111610/WorkgroupScop eandProcedures-Security.pdf Registration, Administration and Access Working Group (RAAWG) s/34610/AMITMtg111610/WorkgroupScop eandProcedures- RegistrationAdminstrationandAccess.pdf s/34610/AMITMtg111610/WorkgroupScop eandProcedures- RegistrationAdminstrationandAccess.pdf Security Working Group (SWG) s/34610/AMITMtg111610/WorkgroupScop eandProcedures-Security.pdf s/34610/AMITMtg111610/WorkgroupScop eandProcedures-Security.pdf 11

Advanced Metering Implementation Team (AMIT) JANUARY 2011 Wednesday 26 th (F2F) 9:00 AM -12:00 PM AMIT Operations and Maintenance Working Group (OMWG) meeting 1:00 PM -5:00 PM AMIT Project and Strategies Working Group (PSWG) meeting Location: ERCOT MET Center Austin Conf. Room 206A WebEx and Conference Bridge information posted on ERCOT.com JANUARY 2011 Wednesday 26 th (F2F) 9:00 AM -12:00 PM AMIT Operations and Maintenance Working Group (OMWG) meeting 1:00 PM -5:00 PM AMIT Project and Strategies Working Group (PSWG) meeting Location: ERCOT MET Center Austin Conf. Room 206A WebEx and Conference Bridge information posted on ERCOT.com 12

Advanced Metering Implementation Team (AMIT) JANUARY 2011 Thursday 27 th (F2F) 9:00 AM -12:00 PM AMIT Registration, Administration and Access Working Group (RAAWG) meeting Location: ERCOT MET Center Austin Conf. Room 209 WebEx and Conference Bridge information posted on ERCOT.com JANUARY 2011 Thursday 27 th (F2F) 9:00 AM -12:00 PM AMIT Registration, Administration and Access Working Group (RAAWG) meeting Location: ERCOT MET Center Austin Conf. Room 209 WebEx and Conference Bridge information posted on ERCOT.com 13

Advanced Metering Implementation Team (AMIT) FEBRUARY th (F2F) Tues: 9:30 AM – 5:30 PM Wed: 9:30 AM – 5:30 PM AMIT Steering Committee meeting Location: PUCT Commission Hearing Room 7 th Floor Address: 1701 N. Congress – Austin, TX WebEx and Conference Bridge will be provided for those wanting to attend via teleconference FEBRUARY th (F2F) Tues: 9:30 AM – 5:30 PM Wed: 9:30 AM – 5:30 PM AMIT Steering Committee meeting Location: PUCT Commission Hearing Room 7 th Floor Address: 1701 N. Congress – Austin, TX WebEx and Conference Bridge will be provided for those wanting to attend via teleconference 14

Advanced Metering Implementation Team (AMIT) FEBRUARY nd (F2F) Tues: 9:30 AM – 5:30 PM AMIT Steering Committee meeting Location: ERCOT Met Center Conference Room 206 MARCH th (F2F) Tues: 9:30 AM – 5:30 PM AMIT Steering Committee meeting Location: ERCOT Met Center Conference Room 206 FEBRUARY nd (F2F) Tues: 9:30 AM – 5:30 PM AMIT Steering Committee meeting Location: ERCOT Met Center Conference Room 206 MARCH th (F2F) Tues: 9:30 AM – 5:30 PM AMIT Steering Committee meeting Location: ERCOT Met Center Conference Room

Advanced Metering Implementation Team (AMIT) APRIL th (F2F) Tues: 9:30 AM – 5:30 PM AMIT Steering Committee meeting Location: ERCOT Met Center Conference Room 206 MAY th (F2F) Tues: 9:30 AM – 5:30 PM AMIT Steering Committee meeting Location: ERCOT Met Center Conference Room 206 APRIL th (F2F) Tues: 9:30 AM – 5:30 PM AMIT Steering Committee meeting Location: ERCOT Met Center Conference Room 206 MAY th (F2F) Tues: 9:30 AM – 5:30 PM AMIT Steering Committee meeting Location: ERCOT Met Center Conference Room

Advanced Metering Implementation Team (AMIT) JUNE th (F2F) Tues: 9:30 AM – 5:30 PM AMIT Steering Committee meeting Location: ERCOT Met Center Conference Room 206 JULY th (F2F) Tues: 9:30 AM – 5:30 PM AMIT Steering Committee meeting Location: ERCOT Met Center Conference Room 206 JUNE th (F2F) Tues: 9:30 AM – 5:30 PM AMIT Steering Committee meeting Location: ERCOT Met Center Conference Room 206 JULY th (F2F) Tues: 9:30 AM – 5:30 PM AMIT Steering Committee meeting Location: ERCOT Met Center Conference Room

Advanced Metering Implementation Team (AMIT) AUGUST rd (F2F) Tues: 9:30 AM – 5:30 PM AMIT Steering Committee meeting Location: ERCOT Met Center Conference Room 206 SEPTEMBER th (F2F) Tues: 9:30 AM – 5:30 PM AMIT Steering Committee meeting Location: ERCOT Met Center Conference Room 206 AUGUST rd (F2F) Tues: 9:30 AM – 5:30 PM AMIT Steering Committee meeting Location: ERCOT Met Center Conference Room 206 SEPTEMBER th (F2F) Tues: 9:30 AM – 5:30 PM AMIT Steering Committee meeting Location: ERCOT Met Center Conference Room

Questions? 19