1. MARS Taskforce RMS Update August 17, 2011

2. Initial Settlement As of August 7, 2011 Operating Date: July 31, 2011 AMC ESI ID Totals: 3,325,128 AMDG ESI ID Totals: 625 Estimated Percentage: 0.8346% As of August 7, 2011 Operating Date: July 31, 2011 AMC ESI ID Totals: 3,325,128 AMDG ESI ID Totals: 625 Estimated Percentage: 0.8346% 2

3. Final Settlement As of August 7, 2011 Operating Date: June 12, 2011 AMC ESI ID Totals: 3,058,415 AMDG ESI ID Totals: 577 Estimated Percentage: 0.0357% As of August 7, 2011 Operating Date: June 12, 2011 AMC ESI ID Totals: 3,058,415 AMDG ESI ID Totals: 577 Estimated Percentage: 0.0357% 3

4. True-Up Settlement As of August 7, 2011 Operating Date: February 11, 2011 AMC ESI ID Totals: 2,399,018 AMDG ESI ID Totals: 452 Estimated Percentage:.03480% As of August 7, 2011 Operating Date: February 11, 2011 AMC ESI ID Totals: 2,399,018 AMDG ESI ID Totals: 452 Estimated Percentage:.03480% 4

5. AMS Meter Installation Status Report Oncor (approximately): Installed: 1,959,822 as of 07.31.2011 Deployment Plan: 2010 – 929,000 meters 2011 – 902,000 meters 2012 – 902,000 meters Oncor (approximately): Installed: 1,959,822 as of 07.31.2011 Deployment Plan: 2010 – 929,000 meters 2011 – 902,000 meters 2012 – 902,000 meters 5

6. AMS Meter Installation Status Report CNP (approximately): Installed: 1,562,738 as of 07.31.2011 Deployment Plan, includes projected growth: 2010 – 756,684 meters 2011 – 960,327 meters 2012 – 373,423 meters CNP (approximately): Installed: 1,562,738 as of 07.31.2011 Deployment Plan, includes projected growth: 2010 – 756,684 meters 2011 – 960,327 meters 2012 – 373,423 meters 6

7. AMS Meter Installation Status Report AEP (approximately): Installed: 333,483 as of 07.25.2011 Deployment Plan schedule: 2010 – 188,212 meters 2011 – 251,571 meters 2012 – 279,329 meters 2013 – 278,280 meters AEP (approximately): Installed: 333,483 as of 07.25.2011 Deployment Plan schedule: 2010 – 188,212 meters 2011 – 251,571 meters 2012 – 279,329 meters 2013 – 278,280 meters 7

8. Market AMS Installed Totals 8

9. PUCT Project 34610 Advanced Metering Implementation Team (AMIT) Documentation & Meeting Schedules can be found on: Public Utility Commission of Texas Project 34610 AMIT Webpage : http://www.puc.state.tx.us/industry/projec ts/electric/34610/34610.aspx http://www.puc.state.tx.us/industry/projec ts/electric/34610/34610.aspx Advanced Metering Implementation Team (AMIT) Documentation & Meeting Schedules can be found on: Public Utility Commission of Texas Project 34610 AMIT Webpage : http://www.puc.state.tx.us/industry/projec ts/electric/34610/34610.aspx http://www.puc.state.tx.us/industry/projec ts/electric/34610/34610.aspx 9

10. AMIT’s Working Group Schedule and Update Registration, Administration & Access Working Group (RAAWG) http://www.puc.state.tx.us/industry/projects/ele ctric/34610/RAAWGMtg071111/RAAWG_Decision -Matrix_071111.pdf http://www.puc.state.tx.us/industry/projects/ele ctric/34610/RAAWGMtg071111/RAAWG_Decision -Matrix_071111.pdf Operations and Maintenance Working Group (OMWG) Every other Wednesday from 1-3 pm Scheduled through August 24, 2011 Projects and Strategy Working Group (PSWG) Every other Friday at 10:45 AM Registration, Administration & Access Working Group (RAAWG) http://www.puc.state.tx.us/industry/projects/ele ctric/34610/RAAWGMtg071111/RAAWG_Decision -Matrix_071111.pdf http://www.puc.state.tx.us/industry/projects/ele ctric/34610/RAAWGMtg071111/RAAWG_Decision -Matrix_071111.pdf Operations and Maintenance Working Group (OMWG) Every other Wednesday from 1-3 pm Scheduled through August 24, 2011 Projects and Strategy Working Group (PSWG) Every other Friday at 10:45 AM 10

11. AMIT Working Group News Projects and Strategy Working Group (PSWG) PSWG developed 6 separate business cases for additional functionality for Smart Meter Texas. PSWG received feedback from the market on these concepts to determine if any should be taken to the next phase of technical use phase. Market Feedback/Response is>>>>>> Projects and Strategy Working Group (PSWG) PSWG developed 6 separate business cases for additional functionality for Smart Meter Texas. PSWG received feedback from the market on these concepts to determine if any should be taken to the next phase of technical use phase. Market Feedback/Response is>>>>>> 11

12. Third Party Access Planning Meeting AUGUST 2011 22nd (F2F) Monday: 9:30 AM – 5:30 PM AMIT Steering Committee meeting Location: ERCOT Met Center Conference Room 206A AUGUST 2011 22nd (F2F) Monday: 9:30 AM – 5:30 PM AMIT Steering Committee meeting Location: ERCOT Met Center Conference Room 206A 12

13. Advanced Metering Implementation Team (AMIT) AUGUST 2011 23rd (F2F) Tues: 9:30 AM – 5:30 PM AMIT Steering Committee meeting Location: ERCOT Met Center Conference Room 206 AUGUST 2011 23rd (F2F) Tues: 9:30 AM – 5:30 PM AMIT Steering Committee meeting Location: ERCOT Met Center Conference Room 206 13

14. AMI’s Next Frontier: Demand Response AUGUST 2011 30th (F2F) Tues: 9:00 AM – 5:00 PM Advance Metering Implementation Team (AMIT) and Demand Side Working Group (DSWG) Workshop Location: ERCOT Met Center Conference Room 206 31st (F2F) Wednesday: 8:00 AM – 12:00 PM Advance Metering Implementation Team (AMIT) and Demand Side Working Group (DSWG) Workshop Location: ERCOT Met Center Conference Room 206 AUGUST 2011 30th (F2F) Tues: 9:00 AM – 5:00 PM Advance Metering Implementation Team (AMIT) and Demand Side Working Group (DSWG) Workshop Location: ERCOT Met Center Conference Room 206 31st (F2F) Wednesday: 8:00 AM – 12:00 PM Advance Metering Implementation Team (AMIT) and Demand Side Working Group (DSWG) Workshop Location: ERCOT Met Center Conference Room 206 14

15. Advanced Metering Implementation Team (AMIT) SEPTEMBER 2011 27th (F2F) Tues: 9:30 AM – 5:30 PM AMIT Steering Committee meeting Location: ERCOT Met Center Conference Room 206 SEPTEMBER 2011 27th (F2F) Tues: 9:30 AM – 5:30 PM AMIT Steering Committee meeting Location: ERCOT Met Center Conference Room 206 15

16. Questions? 16