Heat Storm: Heat Storm:

Update on CPUC Update on CPUC

Follow-up ActionsFollow-up ActionsSteve LarsonSteve Larson

Executive DirectorExecutive DirectorCalifornia Public Utilities CommissionCalifornia Public Utilities Commission

September 14, 2006September 14, 2006

22

PG&E highest temperatures in 34 yearsPG&E highest temperatures in 34 years Peak load 13% higher than last yearPeak load 13% higher than last year

SCE one in ten year eventSCE one in ten year event Peak load 3.6% higher than last yearPeak load 3.6% higher than last year

SDG&E one in 25 year eventSDG&E one in 25 year event Peak load 11% higher than last yearPeak load 11% higher than last year

ISO Peak: 50,270 MW – 11% higher than ISO Peak: 50,270 MW – 11% higher than 2005. Reserves were at 5%.2005. Reserves were at 5%.

The Heat Storm Was an The Heat Storm Was an Extraordinary Event Extraordinary Event

Throughout the State Throughout the State (1)(1)

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Storm affected electricity grid during weeks of July 17 and Storm affected electricity grid during weeks of July 17 and July 24 July 24

138 deaths attributed to the heat storm138 deaths attributed to the heat storm

The electric distribution infrastructure took a beatingThe electric distribution infrastructure took a beating Transformers failedTransformers failed

PG&E 1200PG&E 1200 SCE 1375SCE 1375 SDG&E 170SDG&E 170

Customers lost distribution service, most for short timesCustomers lost distribution service, most for short times PG&E 1.3 millionPG&E 1.3 million SCE 1.1 millionSCE 1.1 million SDG&E 45,000SDG&E 45,000

The Heat Storm Was an The Heat Storm Was an Extraordinary Event Extraordinary Event

Throughout the State Throughout the State (2)(2)

44

ISO, Generators, Utilities, ISO, Generators, Utilities, Firefighters, and Customers Rose Firefighters, and Customers Rose

to the Occasionto the Occasion

ISO operated the grid efficiently and flexiblyISO operated the grid efficiently and flexibly Generators kept the power plants operatingGenerators kept the power plants operating Utility crews replaced blown transformersUtility crews replaced blown transformers Firefighters protected the gridFirefighters protected the grid Customers responded to FlexCustomers responded to Flex

Your Power callsYour Power calls

55

PUC Action Plan Underway PUC Action Plan Underway NowNow

I.I. Increase Targeted Energy EfficiencyIncrease Targeted Energy Efficiency

II.II. Increase Demand ResponseIncrease Demand Response

III.III. New Local GenerationNew Local Generation

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Increase Targeted Increase Targeted Energy EfficiencyEnergy Efficiency

PG&E and SCE now soliciting PG&E and SCE now soliciting additional third party programs using additional third party programs using 2006-2008 program budgets. 2006-2008 program budgets.

Looking for innovative, targeted Looking for innovative, targeted energy efficiency programs focusing energy efficiency programs focusing on high-demand areas.on high-demand areas.

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Increase Demand Increase Demand ResponseResponse

I.I. Increased Air Conditioner CyclingIncreased Air Conditioner Cycling

II.II. Demand Response Programs For This SummerDemand Response Programs For This Summer

III.III. Demand Response Programs For 2007 and Demand Response Programs For 2007 and

BeyondBeyond

88

Increase Air Conditioner Increase Air Conditioner CyclingCycling

Peevey Assigned Commissioner Peevey Assigned Commissioner Ruling August 15Ruling August 15

Directs Edison to bring 300 MW more Directs Edison to bring 300 MW more online by Summer 2007online by Summer 2007

Directs PG&E, SDG&E to report on Directs PG&E, SDG&E to report on opportunitiesopportunities

99

Increased Demand Increased Demand Response Programs for Response Programs for

this Summerthis Summer E-4009E-4009: No advice letter. Initiated by Energy Division.  Adopts a new : No advice letter. Initiated by Energy Division.  Adopts a new

triggering mechanism for the Demand Reserves Partnership program triggering mechanism for the Demand Reserves Partnership program for the purpose of increasing demand response for the remainder of for the purpose of increasing demand response for the remainder of this summer. this summer.

E-4011E-4011: SDG&E AL 1811-E.  Approves modifications to SDG&E’s C&I : SDG&E AL 1811-E.  Approves modifications to SDG&E’s C&I 20/20 Program for the purpose of increasing more demand response 20/20 Program for the purpose of increasing more demand response for the remainder of this summer. for the remainder of this summer.

E-4012E-4012: PG&E AL 2870-E.  Approves a modification to the Demand : PG&E AL 2870-E.  Approves a modification to the Demand Bidding Program (PG&E/SCE/SDG&E) for the purpose of increasing Bidding Program (PG&E/SCE/SDG&E) for the purpose of increasing demand response for the remainder of this summer. demand response for the remainder of this summer.

E-4018E-4018: PG&E AL 2880-E.  Approves re-opening PG&E’s Interruptible : PG&E AL 2880-E.  Approves re-opening PG&E’s Interruptible tariff for remainder of 2006 but not 2007.tariff for remainder of 2006 but not 2007.

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Demand Response Programs Demand Response Programs for Next Summer and Beyondfor Next Summer and Beyond

Peevey Assigned Commissioner Ruling Peevey Assigned Commissioner Ruling August 9August 9

Directed new demand response proposals Directed new demand response proposals August 30th. August 30th.

Received proposals for new and expanded Received proposals for new and expanded existing programs.existing programs.

Commission decision in November.Commission decision in November.

1111

New Local GenerationNew Local Generation

Five New Generators for Edison, andFive New Generators for Edison, and

Requests by PG&E and SDG&ERequests by PG&E and SDG&E

PeakersPeakers DispatchableDispatchable Supports local distribution systemSupports local distribution system

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Increased Use of Increased Use of Cooling Centers Cooling Centers (1)(1)

PG&EPG&E 31 Cooling Centers 31 Cooling Centers

PG&E separately refers approximately PG&E separately refers approximately 300 customers who self-identify 300 customers who self-identify as “heat sensitive” to Rotating as “heat sensitive” to Rotating Outages Cooling Stations. Outages Cooling Stations. PG&E is also expanding its effortsPG&E is also expanding its effortsto inform its customers about how to inform its customers about how to take care of themselves in the event of to take care of themselves in the event of extreme heat.extreme heat.

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Increased Use of Increased Use of Cooling Centers Cooling Centers (2)(2)

SCESCE 38 Cooling Centers 38 Cooling Centers

SCE has outreach program for targeted populations SCE has outreach program for targeted populations through informational fliers, public service through informational fliers, public service announcements, targeted mailings, targeted events, local announcements, targeted mailings, targeted events, local newspapers, and through established partnerships with newspapers, and through established partnerships with businesses and other community-based organizations.businesses and other community-based organizations.

In response to lessons learned during the last heat wave, In response to lessons learned during the last heat wave, SCE contractors have implemented grass roots door-to-SCE contractors have implemented grass roots door-to-door outreach within farm-worker communities, senior door outreach within farm-worker communities, senior housing, and low-income housing developments to housing, and low-income housing developments to inform vulnerable populations of the availability of Cool inform vulnerable populations of the availability of Cool Center sites.Center sites.

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Increased Use of Increased Use of Cooling Centers Cooling Centers (3)(3)

SDG&ESDG&E San Diego County has 150 Cooling CentersSan Diego County has 150 Cooling Centers SDG&E provides partial support to San Diego SDG&E provides partial support to San Diego

County’s Cool Zones Program through its CARE County’s Cool Zones Program through its CARE program. program.

Outreach for the Cool Zones program is a Outreach for the Cool Zones program is a collaboration between SDG&E and the County of collaboration between SDG&E and the County of San Diego. A kick-off event was held which San Diego. A kick-off event was held which received local media attention, and the County received local media attention, and the County also promotes Cool Zones through its own also promotes Cool Zones through its own methods. methods.

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Taking Stock and Taking Stock and Planning for the FuturePlanning for the Future

Is our forecasting good enough?Is our forecasting good enough? Are we out of the woods for this Are we out of the woods for this

summer?summer? What does next summer look like?What does next summer look like? What about the future?What about the future?

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Temperature Trends in Temperature Trends in the Last 100 yrsthe Last 100 yrs

Tmin

Red (f illed) = increasingBlue (open) = decreasing

0 .1 5 0 0 .0 7 5 0 .0 0 1

Statew ide Avg. = 0.037 oF/yr

Tmax

Statew ide Avg. = 0.009 oF/yr

Data Source: U.S Historical Climatology Netw ork

Summer

1717

Distribution of Maximum Temperatures: Distribution of Maximum Temperatures: June - SeptemberJune - September

Pasadena

Berkeley

Fresno

Maximum Temperature

0

50

100

150

200

250

58 61 64 67 70 73 76 79 82 85 88 91 94 97 100

103

106

109

Temperature (F)

Nu

mb

er

of

Da

ys

1950-1974 1975-2000

Maximum Temperature

0

50

100

150

200

250

300

53 56 59 62 65 68 71 74 77 80 83 86 89 92 95 98 102

Temperature (F)

Nu

mb

er

of

Da

ys

1925-1949 1950-1974 1975-2000

Maximum Temperature

02040

6080

100120140

160180

200

60 67 70 73 76 79 82 85 88 91 94 97 100

103

106

109

112

Temperature (F)

Nu

mb

er

of

Da

ys

1950 - 1974 1975 - 2000