1. SmartMeter Program Overview and Impacts for ESPs April 2007

2. 2 2 Note: Information in this presentation represents the best efforts of PG&E’s ESP and IT teams to identify future system output. The actual dates and exact data changes may be somewhat different than the changes identified here. Welcome ► Please dial in for the audio, enter the “Identify yourself” code at the bottom of your screen, then minimize the audio instructions ► Close all other applications you have running on your PC to ensure a smooth delivery ► Maximize your webcast viewing window ► For technical assistance during this session, please dial *10* OR directly call the Genesys Support Desk at 1-866-GENESYS

3. 3 3 Note: Information in this presentation represents the best efforts of PG&E’s ESP and IT teams to identify future system output. The actual dates and exact data changes may be somewhat different than the changes identified here. Instructions ► Ask Questions via “Chat” function ► Phones will be muted ► Q & A segment will be held at the end of the webcast ► A Q&A follow-up document will address all questions

4. 4 4 Note: Information in this presentation represents the best efforts of PG&E’s ESP and IT teams to identify future system output. The actual dates and exact data changes may be somewhat different than the changes identified here. Our Discussion Today ► Overview of PG&E’s SmartMeter™ Program ► Scope ► Architecture ► Deployment Plan and Schedule ► General Implications for ESPs ► EDI Changes for ESPs ► When SmartMeter equipment installed ► In Current EDI Files ► New Daily EDI Files

5. 5 5 Note: Information in this presentation represents the best efforts of PG&E’s ESP and IT teams to identify future system output. The actual dates and exact data changes may be somewhat different than the changes identified here. Highlights ► The PG&E SmartMeter program: ► will deploy a system for automated meter reading – hourly meter reads for electric, and daily meter reads for gas ► includes two separate systems: a power line carrier system for electric and a radio frequency system for gas ► involves an upgrade to both gas and electric meters – approximately 10 Million meters will be upgraded ► will be deployed over a five year period. An initial, paced deployment began in Bakersfield in November, 2006. Mass deployment is targeted for September 2007. Deployment efforts are scheduled to conclude in late 2011 ► will introduce additional capabilities over time, including outage management and remote connect/disconnect (for a subset of electric customers) ► will enable the introduction of demand-response rates for residential and small business customers as early as summer, 2007

6. 6 6 Note: Information in this presentation represents the best efforts of PG&E’s ESP and IT teams to identify future system output. The actual dates and exact data changes may be somewhat different than the changes identified here. SmartMeter Dual-Network Architecture CONSUMER PUBLIC WIRELESS NETWORK PUBLIC WIRELESS NETWORK Customer Information System PLC System Controller Web Server AMI Interface System RF Network System Controller Substation Communication Equipment PG&E Substation Electric powerline carrier network Data Collector Unit Fixed Wireless Network System Meter Data Management & Storage EDI

7. 7 7 Note: Information in this presentation represents the best efforts of PG&E’s ESP and IT teams to identify future system output. The actual dates and exact data changes may be somewhat different than the changes identified here. South Valley Start: Bakersfield (11/06) Finish: Modesto/Turlock (4/10) Central Coast Start: Santa Cruz: (12/08) Finish: Santa Maria (11/10) Bay Area Start: Concord/Antioch (12/07) Finish: San Francisco (10/11) North Coast Start: Lakeport (11/09) Finish: Santa Rosa/ Sonoma/ Petaluma/ Gurneville/Geyserville (10/11) North Valley Start: Marysville/Colusa (11/07) Finish: Sacramento (10/11) Meter Deployment Plan Overview Note: Information in this presentation represents the best efforts of PG&E’s ESP and IT teams to identify future system output. The actual dates and exact data changes may be somewhat different than the changes identified here.

8. 8 8 High Level SmartMeter Project Timeline July 20 CPUC Decision Sept Network Install Begins IT Functionality Available Oct. 2011 Meter Installations Complete Nov 6 Meter Deployment Begins Dec 242 K Meters Installed 20072006 (2) Initial Deployment June SAT1 (Vacaville) complete (3) Mass Deployment 2011 May 28Sept 1 Target begin mass deployment (1) System Test

9. 9 9 Note: Information in this presentation represents the best efforts of PG&E’s ESP and IT teams to identify future system output. The actual dates and exact data changes may be somewhat different than the changes identified here. Implications for ESPs ► ESPs will not be able to read SmartMeter gas or electric meters ► Some meters are initially excluded from SmartMeter deployment: ► Current electric DA interval meters (PG&E and 3 rd party) will not be impacted until 2009 ► DA metering rules will not change for electric accounts. Electric ESPs will still have the option to replace a SmartMeter electric meter with a 3 rd party owned meter for accounts >50kW ► Account switching will occur on the bill date, not the meter read date ► EDI file content changes for both gas & electric (814, 867 and 810) ► The largest implication for ESPs at this point and the reason for today’s webcast

10. 10 Note: Information in this presentation represents the best efforts of PG&E’s ESP and IT teams to identify future system output. The actual dates and exact data changes may be somewhat different than the changes identified here. DES/MADS Login Screen showing EDI 814 and 867 Transactions ► This is what you see today – the look and feel will not change ► For SmartMeter customers ► New daily files will appear ► Content will change slightly

11. 11 Note: Information in this presentation represents the best efforts of PG&E’s ESP and IT teams to identify future system output. The actual dates and exact data changes may be somewhat different than the changes identified here. I. SmartMeter Data - EDI 814 (ACK) (Gas & Electric) Changes ► When a SmartMeter gas or electric meter is installed, PG&E: ► Assigns a new SA ID ► New SA IDs will be assigned when a SmartMeter enabled meter is installed ► The DA XREF will remain the same ► Identifies the interval size the meter is registering (i.e. 00000015, 00000060, 000001440) ► Assigns a new rate name - “H” (e.g., HE1, HG1) ► Snapshot reports will be updated with new SA IDs and “H” rate schedule names ► Snapshot reports are provided to ESPs twice a month ► Switch date will occur on the bill date, not the meter read date

12. 12 Note: Information in this presentation represents the best efforts of PG&E’s ESP and IT teams to identify future system output. The actual dates and exact data changes may be somewhat different than the changes identified here. New Data Elements - EDI 814 (ACK) (Gas & Electric) CONNECT DASR: UDC to ESP: Response to Connect – Accept (SP-ACK-CONNECT) 1.8.1) Accepted Connect, meter investigation not required, pending switch date provided – SA is SmartMeter 15 minute Interval Read/Billed Switch Date Rate Name Interval

13. 13 Note: Information in this presentation represents the best efforts of PG&E’s ESP and IT teams to identify future system output. The actual dates and exact data changes may be somewhat different than the changes identified here. II. SmartMeter Data - EDI 867 (Gas & Electric) Changes ► New daily files with SmartMeter data (gas & electric) ► Daily files named with “DAY” in file extension (gas & electric): ESP.2007021414048.DAY.EDI867 ► Gas daily files will contain one 24 hour (1440 minutes) interval ► Electric daily files will contain interval data (15 or 60 minutes, depending on the rate) ► No start or end reads in the daily file ► Monthly files will continue, but usage will be in interval format – no more “reads” (gas & electric) ► No multiplier for gas consumption ► No meter constant for electric

14. 14 Note: Information in this presentation represents the best efforts of PG&E’s ESP and IT teams to identify future system output. The actual dates and exact data changes may be somewhat different than the changes identified here. New Data Elements EDI 867 (Electric - Daily) Start Date & Time Interval Size End Date & Time

15. 15 Note: Information in this presentation represents the best efforts of PG&E’s ESP and IT teams to identify future system output. The actual dates and exact data changes may be somewhat different than the changes identified here. New Data Elements EDI 867 (Electric - Monthly) …720 hourly intervals

16. 16 Note: Information in this presentation represents the best efforts of PG&E’s ESP and IT teams to identify future system output. The actual dates and exact data changes may be somewhat different than the changes identified here. New Data Elements EDI 867 - Gas Gas - Daily Gas - Monthly

17. 17 Note: Information in this presentation represents the best efforts of PG&E’s ESP and IT teams to identify future system output. The actual dates and exact data changes may be somewhat different than the changes identified here. III. SmartMeter Data - EDI 810 (Gas and Electric) Changes ► Total energy usage will carry 6 decimal places ► Tiered usage amounts will carry 6 decimal places ► No start or end reads ► No multiplier for gas consumption ► No meter constant for electric ► No proration of usage

18. 18 Note: Information in this presentation represents the best efforts of PG&E’s ESP and IT teams to identify future system output. The actual dates and exact data changes may be somewhat different than the changes identified here. New Data Elements - EDI 810, E1 Residential (Electric) Total Usage (6 decimal places; no beginning or end reads; no multiplier/constant)

19. 19 Note: Information in this presentation represents the best efforts of PG&E’s ESP and IT teams to identify future system output. The actual dates and exact data changes may be somewhat different than the changes identified here. New Data Elements - EDI 810, G1 Residential (Gas) Total Usage (6 decimal places; no beginning or end reads; no multiplier/constant)

20. 20 Note: Information in this presentation represents the best efforts of PG&E’s ESP and IT teams to identify future system output. The actual dates and exact data changes may be somewhat different than the changes identified here. Electric Account Detail – E1 Residential Service For accounts with “SmartMeter billed” status there will be no meter reads displayed on the bill. Usage is calculated to six decimal points vs. five in the current system. SAMPLE BILL

21. 21 Note: Information in this presentation represents the best efforts of PG&E’s ESP and IT teams to identify future system output. The actual dates and exact data changes may be somewhat different than the changes identified here. Gas Account Detail – G1 Residential Service This is an example of a gas only bill. Again, no reads, nor is the therm factor displayed, and the usage is carried out to six decimals. EMR accounts will continue to show the reads. SAMPLE BILL

22. 22 Note: Information in this presentation represents the best efforts of PG&E’s ESP and IT teams to identify future system output. The actual dates and exact data changes may be somewhat different than the changes identified here. Question & Answer We will provide you updates as further information becomes available. Should you have additional questions, please contact edisupport@pge.com, or your PG&E representative. edisupport@pge.com