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Tariff Programs & ServicesCustomer Services Business Unit

Overview of Demand Response At Southern California Edison

Prepared for the California Energy Commission

Lawrence Oliva, Director - TP&SMarch 3, 2008

2Copyright © 2008, Southern California Edison CSBU Tariff Programs & Serviceswww.sce.com/RebatesandSavings

What is Tariff Programs and Services?

• 58 person division that develops and operates SCE’s demand response and load shifting resources

• TP&S, Energy Efficiency and Customer Experience Management report to SCE’s Customer Programs and Services Department

• Current active DR programs range from:– Radio Load Control (SDP, AP-I) – Emergency Interruptible Rates (I-6, BIP)– Voluntary Price Response (DBP, CBP, CPP)– Forward Resource Contract (EnerNOC)

3Copyright © 2008, Southern California Edison CSBU Tariff Programs & Serviceswww.sce.com/RebatesandSavings

Demand Response Highlights of 2007

• SCE countable DR (adjusted for performance) is 1,324 MW or 5.7% of total SCE system peak (23,300 MW) – Most DR in California

• Summer Discount Plan (AC Load Control)– increased by 225 MW since Aug 2006– largest DLC Program in California (583 MW)

• Large Interruptible Resource – 639 MW of 30 minute DR available for emergencies

• Growing Price Response - 42 MW day of, day ahead in four different programs

4Copyright © 2008, Southern California Edison CSBU Tariff Programs & Serviceswww.sce.com/RebatesandSavings

2007 SCE DR Program Activities

Commitment Program Participants MWs 2007 Events

None Demand Bidding

1,200 16.5 22

None CPP 43 6.3 12

Commitment Program Participants MWs 2007 Events

Annual Summer Discount Plan

298,000 583 6

Annual Ag Pump plan

479 46 0

Commitment Program Participants MWs 2007 Events

Annual Interruptible 561 629 0

Monthly Capacity Bidding

97 8.5 21

X-Term 3rd Party 96 11 3Price

Responsive

Firm/Dispatched

Firm

Non-Firm

5Copyright © 2008, Southern California Edison CSBU Tariff Programs & Serviceswww.sce.com/RebatesandSavings

Potential Future of Price Responsive DR for SCE

0

200

400

600

800

1000

1200

1400

MWs

2008 2009 2010 2011 2012 2013

YEARS

Forecasted Price Response Programs MWs

DR Contracts (Pending)

SmartConnect

Current Price Response Programs

Target: 5% of Peak Demand

6Copyright © 2008, Southern California Edison CSBU Tariff Programs & Serviceswww.sce.com/RebatesandSavings

Plans for DR with Edison SmartConnect Meters

• Edison SmartConnectTM (AMI for all customers), SCE demand response enabled programs include:– Residential Peak Time Rebates (PTR)– TOU and Critical Peak Price rates

• Available for residential• Default TOU for C&I above 20kW, optional CPP

– Enabling Technology using two-way Programmable Communicating Thermostats (PCT)

• Enabling technology for dynamic pricing (CPP)• Available for Residential and Commercial applications

7Copyright © 2008, Southern California Edison CSBU Tariff Programs & Serviceswww.sce.com/RebatesandSavings

DR Roadmap with Edison SmartConnect

2008 2009 2010 2011

File Tariffs for New Rates

Non-ZigBee PCT “Research” Project

ZigBee PCT “Pilot” Project

Trial Pilot Launch

ZigBee PCTDevice Development

Rates

A/C Load Control

SDP New Devices = 60k

SDP Non-SmartConnectInstallations only SDP Non-SmartConnect

Installations only

ZigBee PCT “Target Marketing”

Develop Education/Marketing Plans & Mat’ls

CustomerEducation

Imp Plans and TestCustomer Response

Enhance Plans and Materials - Launch

Programs/Services

File Tariffs• Rebate plan• Thermostat plan

• PTR Pilot• Thermostat Pilot• Remote Serv Switch • Online Usage Data (1st Qtr)

• PTR program• Thermostat Programs• Remote meter reading• Online Usage/Cost

tools• SCE.com Bundles

•Continue existing dynamic rates•New rates approved 4th quarter

•New dynamic rates

Meter rollout

5.3 milmeters