Mike Montoya - SCE

SCE Smart Grid
Creating a Cleaner, Smarter Energy Future

Mike Montoya
May 18, 2010

Southern California Edison
An Edison International Company
•  Serve a population of about 14 million people
in a 50,000-square-mile service area within
central, coastal and Southern California

•  5 million electric meters
PG&E

•  12,000 circuit miles of transmission lines and
more than 111,500 circuit miles of
distribution lines

•  5,000 MW of generating capacity from
interests in nuclear, hydroelectric, and fossil-
fueled power plants

•  Award-winning energy eﬃciency & DR
customer programs

•  Industry leader in renewable energy, electric
LADWP
transportation, Smart Grid and smart
SDG&E metering

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© Copyright 2009, Southern California Edison

SCE’s Smart Grid Vision

SCE’s vision of a smart grid is to develop and deploy a more
reliable, secure, economic, eﬃcient, safe and environmentally-
friendly electric system covering all facets of electricity from
production through transmission, distribution, and its smart use
in homes, businesses and vehicles.

3


California Climate & Energy Policies
Most Aggressive Policies in the United States

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Renewable & DER Growth
California is Pushing Beyond Limits of Current Grid Capabilities

CA Renewables Portfolio Standard
•  20% by 2010 2008 Renewables Summary
•  33% by 2020 (Governor’s Exec Order)

Lg Rooftop Solar PV Program
•  500 MWs by 2015
•  250 MWs by SCE & 250 MWs by IPP
•  ~ 350 projects at 1-2 MWs each

California Solar Initiative (CSI)
•  Goal of install 3,000 megawatts (MW) of
new, customer-side solar photovoltaic
projects by 2017

5


Signi cant Increase in New Wind Resources
Potential 7x Increase in Total Wind Energy to 15 Billion kWh

From “Brie ng on the CAISO Renewable
Integration Study”, October 17,2007

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Identi ed Issues on the Bulk Power System (Wind)
•  System spinning reserve requirements will change due to the uctuation
in wind generation

•  Reactive power planning requirements (VARS) will change due to the
uctuation of wind generation

•  Wind generation does not contribute to the main system frequency
control

•  Inter-area oscillations may occur due to the lack of inertia from Type 3
and Type 4 wind turbines

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Solar Intermittencies
•  Seasonal, Daily, Minute PV Power
Fluctuating
•  PV Inverter – Grid Interactions
•  Low Capacity Factor < 20%
•  Inaccurate forecasting
•  No cost eﬀective grid storage yet

8


PEV Adoption Forecast for SCE Service Area
Early Market (2010-2014)
(in thousands)
•  Modest number of PEVs;
•  Early adopters with high
expectations;
•  Uncertainty around market
development; and
•  New policies and standards
developed & implemented.
Growing Market (2015 +)
•  Growing number of PEVs;
•  Some clarity around
customer charging behavior
and impacts to electric grid;
and
•  Growing signi cance of load We are in the early days. All of us – policy
management. makers, auto manufacturers, auto dealers,
utilities – need to gure it out together.

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Engaging Customers in the Supply Chain
By 2020, in SCE’s service area there may be as many as 10 million intelligent
devices1 linked to the grid providing sensing information and automatically
responding to prices/event signals

1. Includes smart meters, energy smart appliances and customer devices, electric vehicles, DR, inverters and storage technologies

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Transmission: Renewables Integration
•  Increase transmission capacity to
integrate more bulk renewable
energy resources
•  Implement Synchrophasors &
Wide Area Controls to enable
enhanced grid monitoring and
controls
•  Provide real-time Voltage, VAR &
frequency support to mitigate
volatility
•  RD&D on advanced inverter
technology to signi cantly
improve integration
•  RD&D on large scale energy
storage systems

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Distribution Automation
•  Enable distributed energy
resources and storage to support
customer choice and improve
grid stability
•  Develop new technology for
dynamic Volt/VAR and
harmonics control to provide
quality service and enable
voltage conservation
•  Minimize customer outages due
to distribution system failures
through expansive automation
Avanti - Circuit of the Future
•  Development of
superconducting devices such as
fault current limiters and
transformers
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Edison SmartConnect™: Empowering Customers
•  Choice to Manage Cost & Peak Demand
–  Rates
•  Time of Use and Tiered Rates
•  Critical Peak Pricing (CPP)
•  Peak Time Rebate (PTR)
–  Programs
•  Smart Communicating Thermostats
–  Outcome
•  Reduce Peak Load by 1,000 MWs

•  Energy Information Drives Conservation
–  Reduce Residential Energy Consumption by
1% (minimum)
–  Reduce GHG by 365,000 tons/yr

•  Automated Self-Service
–  Remote Service Switch
–  Payment and Billing Options

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Customer Bene ts
•  Enable state and federal energy policy goals
–  Renewables Portfolio Standard (RPS)
–  California Solar Initiative (CSI)
–  Assembly Bill 32

•  Maintain levels of service reliability as increasing levels of renewable and
distributed energy resources are incorporated into the transmission and
distribution systems

•  Empower customers by providing actionable information and better
tools to manage their energy costs and conservation eﬀorts

•  Improve grid security, safety, and reliability

•  Create the processes and deploy the infrastructure needed to support
the projected adoption of plug-in electric vehicles

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SCE Smart Grid Development
Building on Smart Foundation Built Over the Past Decade

~$1.5 Billion Capital* Smart Grid Development

2009 2010 2011 2012
PEV Integration
Renewable Integration Tech Dev.
Enhanced Outage Management
Expanded Distribution Automation
Centralized Remedial Action Schemes
Phasor Measurement
Substation Security Video Surveillance
Energy Management System Upgrade
Advanced Load Control
Smart Metering

* Project capital approved by CPUC in SCE’s 2009 GRC & SmartConnect program

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SCE Smart Grid Development Statistics
•  Total synchrophasors on bulk transmission system = 27
•  Advanced energy management system (EMS) = Yes
•  Total substations automated (% of 900 substations) = 56%
•  Total substation transformers with dissolved gas analysis (DGA) = 0%
•  Total substations with low latency, high bandwidth telecoms = 33%
•  Distribution management and load control systems = Yes
•  Total circuits with outage mitigation (% of 4,400 circuits) = 41%
•  Total circuits with eld automation (% of 4,400 circuits) = 41%
•  Total microprocessor relays = 31%
•  Total ber optic cable miles = 3,100
•  Total renewable resource capacity integrated
–  Transmission = 2,784 MW
–  Distribution = 2.4 MW
•  Total demand response (DR) capacity = 1,548 MW
•  Smart metering
–  Large commercial and industrial (C&I) customers = 100%
–  Residential and small commercial and industrial (C&I) customers = 635,000+ meters

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What is Needed to Realize a Smarter Grid?
•  Intelligent and communicating PEVs that integrate gracefully with the
grid

•  Cost eﬀective energy storage at bulk transmission and distribution

•  Commercial products based on open, non-proprietary standards that are
secure

•  Seamless and secure telecommunications infrastructure that integrates
millions of intelligent devices to produce actionable information that is
used to control the electric system

•  Workforce with the skills and knowledge to engineer, build, operate and
maintain an electric grid with pervasive information technology
embedded

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Observations
•  Smart Grid is a journey that will be 20+ years in the making
–  Personal computing was introduced 30 years ago
–  Portable cell phones were introduced 25 years ago
–  Public Internet was launched 20 years ago

•  Pace of technology adoption will need to consider policy, customer
impact, utility operations and asset obsolesce

•  A smarter electric grid will become more interactive with our customers’
lives thru the home, transportation and workplace

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For more information on SCE’s Smart Grid strategy, news,
and updates, go to: www.sce.com/smartgrid

For information on careers with Advanced Technology,
please email Lee Cordner at Lee.Cordner@sce.com

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Appendix

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Distribution System Impacts
T&D System
Drivers & Modeling & Financial
Impacts
Concerns Analysis Impacts

•  Large, mobile load •  Circuit and sub- •  Wide range of system •  Over 95% of nancial
with local circuit component impacts depending impacts due to
distribution modeling/ on density of PEV transformer and circuit/
impacts simulation of clustering, vehicle substation upgrades
incremental impacts counts, etc.
•  May double •  SCE will apply for
household peak •  Incorporate hybrid •  Anywhere from 1 to recovery PEV-related
usage adoption and 10% of transformers costs through its General
“handraiser” data forced beyond Rate Case
•  Uncertainty of
loading limits
charging level, •  Measure incremental •  Some costs may be
time of day, PEV impacts by •  Adverse impacts on 4 mitigated by optimization
geographic comparing to base to 11% of system with infrastructure
location load growth circuits and replacement and with
substations other smart investment
•  More than 4,300
circuits to assess programs

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Key Policy & Market Issues
Over the next year, a number of key issues will need to be decided by
utilities and regulators (e.g., through the AFV OIR process)

Jurisdictional Issues: How should EV service providers be regulated if they will
provide electric services to retail end-use customers?

Non-customary Loads: At what charging level should a customer be required to
pay for system upgrades associated with new load?
Cost Allocation: Who should pay for the upgrades associated with PEV
load and the associated procurement and emissions
obligations?
Charging Infrastructure: How will suﬃcient charging infrastructure be installed to
support market adoption, particularly with respect to
public and multi-family dwelling access?
Utility Role: What opportunities exist for utilities within the market,
and where will they be needed to ll in gaps (if at all)?

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Mike Montoya - SCE

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