Institute of Electrical and Electronics Engineers

Jill EgbertSenior Manager

PG&E Smart Energy Web

Introduction Pacific Gas and Electric Company (“PG&E”) is

the franchised Utility serving Northern and Central California;

– Approximately 5.2M Electric customers and 4.2M Gas customers;

Customers are well educated and passionate about environmental issues

PG&E has transportation programs that encourage the use of electricity, L/CNG and Hydrogen

PG&E’s Electric Drive Demonstrations

Actively evaluating Electric Drive opportunities both for “Greening” our own fleet and to promote a larger consumer market opportunity

First utility to demonstrate V2G in April; Repeated demonstration at Google in June

Chair EPRI Infrastructure Working Council – Focus on developing infrastructure standards for PHEVs

Dodge Sprinter Van

Phoenix SUT

Ford Escape

Ford F550 Trouble Truck

April 2007: PG&E demonstrates Vehicle supplying power to the Grid

V2G Demonstration at Google Campus June 2007

PG&E Challenges

Customers expect their utility to be an actively green, innovative, leader while maintaining low rates and bills

Increasing energy demands with peak electric load growing faster than off-peak load

Current and future state-mandated Renewable Portfolio Standards– 20% derived from renewable resources by 2010 and legislation currently in the

California Assembly to increase to 33% by 2020

Carbon Caps under AB32 and other Legislation– Trend will be towards increasingly cleaner generation sources

Wind Generation: Difficult to PredictHow does a Utility plan for resources with this profile?

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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

Hour

Meg

awat

ts

Average

Each Day is a different color.Day 29

Day 5 Day 26

Day 9

Wind profile pattern in April 2007

Electricity as a Fuel

Fuel diversity reduces impact from volatility and promotes stability Significant portion of existing generation fuel mix is currently CO2 free

– Approximately 56% of PG&E’s energy portfolio is CO2 free

Recent and ongoing legislation promotes cleaner generation mix over time– RPS legislation enacted in 21 states

Low fuel cost and minimal additional infrastructure required Time of Use rates for EV/PHEV charging can create economic incentives

– Preferential rates for off-peak consumption

Large night-time “off peak” usage can reduce overall system average rates– Improves utilization rates for existing generation portfolio

Projected future renewables tend to be an off-peak energy resource

Timeshifting Electricity

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1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12

Syst

em L

oad

(GW

)

Typical Load

AM PM

Load w/ 1 mil. EVs

off-peak load

off-peak load

Vehicle-to-grid energy

(V2G)

Fill EVs off-peak with renewables

Avoid peaker construction

SmartGrid Vision

Cap banks Reclosers Switches Sensors Transformers Meters Storage

Substation Wires Customers

Servers Data storage Webpresentment Transactions Modeling Smart

agents Intelligence

Energyinfrastructure

1

Communications infrastructure

2

Computing / information technology

3

Business applications –“Smart EnergyWeb”

4

Generation / supply

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Pow

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Secu

rity

SmartGrid components

Energy information network

Fiber/MPL RF Mesh Home Area Network (HAN)

WiMax Cellular

Home Area Network

EfficientBuildingSystems

Utility AMICommunications

DynamicSystemsControl

DataManagement

DistributionOperations

DistributedGeneration& Storage

Plug-In Hybrids

SmartEnd-UseDevices

SmartMetering

Consumer PortalRenewables

PV

Home EMS

Industry Challenges - Standardization

Standardization required for plug-in vehicles to achieve critical mass penetration– Automakers must be able to produce one vehicle for all utility territories

– Vehicle owners need to be able to travel across utility lines and be billed properly (cellular phone model)

Standardization to include charging, metering, and communications domains– Required charging infrastructure: Connectors and levels

– Accurate and discrete measurement of energy delivered

– Communications protocol standards: Wireless and wired

Relevant global standards bodies– Institute of Electrical and Electronics Engineers (IEEE)

– Electric Power Research Institute – Infrastructure Working Council (EPRI - IWC)

– International Standards Organization (ISO)

– American National Standards Organization (ANSI)

– SAE International (SAE)

– European Telecommunications Standards Institute (ETSI)

PG&E Corporation is committed to being an environmental leader by providing safe, economical, and reliable products and services in a responsible and environmentally sensitive manner.

THANK YOU!