PowerPoint Presentation · its infrastructure. SCE’s investments support safe, reliable, affordable, and clean energy for our customers 2019 Capital Investments 179 miles of underground

Circuit Reliability Review

Indian Wells

2020

2

• Southern California Edison (SCE) is an Edison International company

• One of the nation’s largest electric utilities

• More than 130 years of history

• Headquartered in Rosemead, California

• Regulated by the California Public Utilities Commission (CPUC) and the Federal Energy Regulatory Commission (FERC)

• 50,000 square miles of SCE service area across Central, Coastal, and Southern California

• 15 million residents in service territory

• 5 million customer accounts in 445 cities and communities

Who We Are

Our Grid

To deliver power safely, reliably and affordably, we monitor and maintain a vast electricity system.

730,000 Transformers

119,000 Miles of Transmission and Distribution Lines

4,600 Circuits

1.5 Million Poles

50,000 Square Miles

3

Strengthening and Modernizing the Grid

• Infrastructure reliability – updating underground

cables, poles, switches, and transformers

• Wildfire mitigation – hardening infrastructure,

bolstering situational awareness capabilities, and

enhancing operational practices

• Transmission – connecting renewables, installing

new substations, and updating lines

• Grid readiness – updating the grid for impacts

from new technologies

• Long-term energy policy – supporting energy

storage, electric vehicles, and renewables

SCE plans to spend more than $5B each

year to maintain, improve, and harden

its infrastructure.

SCE’s investments support safe, reliable, affordable, and clean energy for our customers

2019 Capital Investments

179 miles of underground cable replaced

502 miles of overhead conductor replaced for public safety

16.4k distribution poles replaced

4.3k transmission poles replaced

71 underground structure replacements

4

PATHWAY 2045SCE’S vision to help California achieve a carbon neutral future

Carbon neutrality is achieved through deep decarbonization of

electricity, transportation and building electrification,

and the use of low-carbon fuels

Meeting California’s Climate Change Goals

5

• SCE filed its second Wildfire

Mitigation Plan in February 2020

• It builds on the progress made

in 2019 to reduce the risk of fire

ignitions caused by utility

infrastructure

• SCE crews will continue to work

to install hi-tech wildfire

mitigation tools and

technologies to make

communities safer, more

resilient, and to help reduce the

number of Public Safety Power

Shutoffs (PSPS)

Addressing Wildfire Risk

6

• De-energizing power lines to prevent ignitions

• Used during elevated fire conditions

• Primarily impacts circuits in high fire risk areas

• Use of multiple methods to notify people in affected areas before, during and after a de-energization event

Public Safety Power Shutoffs (PSPS)

7

4-7 DAYS AHEAD

3 DAYSAHEAD

2 DAYSAHEAD

1 DAY AHEAD POWER SHUTOFF

POWER RESTORATION

PLANNING AND MONITORING OUTAGE

*Erratic or sudden onset of conditions may impact our ability to provide advanced notice to customers.

Forecast Weather & Fire

Conditions

SCE Incident Management Team on Alert

County Operational Areas

informed of potential activation

SCE Incident Management

Team Activated

1st Notification PSPS Possible sent

to agencies and customers

2nd Notification PSPS

Possible

3rd Notification Power Shutoff

4th Notification Power Restored After Inspection

Reliability Overview

8

What is Reliability?

• In simplest terms:

Having dependable electricity when you need it.

• Outages:

• Maintenance outages (aka planned outages)

• Repair outages (aka unplanned outages)

• Sustained Outage = An outage lasting > 5 minutes

• Momentary Outage = An outage lasting ≤ 5 minutes

9

Major Event Day (MED) : A day in which the daily system SAIDI exceeds a threshold value. For the purposes of calculating daily system SAIDI, any interruption that spans multiple calendar days is accrued to the day on which the interruption began. Statistically, days having a daily system SAIDI greater than a threshold value are days on which the energy delivery system experienced stresses beyond that normally expected (such as severe weather).

Public Safety Power Shutoff (PSPS) : An operational protocol that SCE implements under extreme weather conditions in order to minimize the threat of wildfires and keep communities safe from potentially dangerous situations. These types of sustained outages are temporary and usually involve situations where high fire areas are experiencing adverse weather or public safety is at risk.

How Do We Measure Reliability?

SAIDI SAIFI MAIFI CAIDI

10

CityList1Communities in the PALM SPRINGS District

RANCHO MIRAGE

THOUSAND PALMS

WHITEWATER CANYON

BANNING

BERMUDA DUNES

CABAZON

CATHEDRAL CITY

DESERT HOT SPRINGS

INDIAN WELLS

AGUA CALIENTE BAND OF CAHUILLA INDIANS

MORONGO BAND OF MISSION INDIANS

MORONGO VALLEY

PALM DESERT

PALM SPRINGS

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*”Exclusions” are days which utilities are allowed to remove from their metrics because the outages on those days were caused by a severe acts of nature.**In the columns showing “Rank,” lower numbers indicate poorer performance.

12

CircuitList1Overview of Indian WellsThere are 17 circuits that serve Indian Wells 1

Circuit Type Customers Circuit Type Customers Circuit Type Customers Circuit Type Customers

AZTEC(12KV) 1,481 - - -

CAHUILLA(12KV) 1,409 - - -

DEEP CANYON(12KV) 365 - - -

INCA(12KV) 1,537 - - -

INCH(12KV) 1,258 - - -

LA QUINTA(33KV) 1 - - -

MANITOU(12KV) 2,043 - - -

MAYAN(12KV) 1,404 - - -

MOHICAN(12KV) 1,299 - - -

NUSBAUM(12KV) 498 - - -

PALM CITY(12KV) 1,086 - - -

SHERYL(12KV) 1,186 - - -

SOBOBA(12KV) 498 - - -

TAKOTA(12KV) 883 - - -

TOLTEC(12KV) 1,298 - - -

TON(12KV) 907 - - -

TRIBAL(12KV) 1,182 - - -

- - - -

- - - -

- - - -

- - - -

- - - -

- - - -

- - - -

- - - -

- - - -

- - - -

- - - -

- - - -

- - - -

Grand Total 18,335

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BarChart

SCE SYSTEMWIDE

**Data is as of 02/14/2020, data

can be slightly different due to

outage data validation process

Indian Wells

Reliability History of Circuits Serving Indian Wells (No Exclusions)

**“Exclusions” are days which

utilities are allowed to

remove from their metrics

because the outages on

those days were caused by

acts of nature.

54.7

187.3

19.4

92.4

134.5 139.7 136.8

178.0

0.0

50.0

100.0

150.0

200.0

2016 2017 2018 2019

SAIDI

(average

minutes of

sustained

interruptions)

1.0

1.2

0.3

0.8

1.11.2

0.9

1.0

0.0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

SAIFI

(average

frequency of

sustained

interruptions)

0.5 0.50.4

0.6

1.6

1.8

1.4 1.4

0.0

0.5

1.0

1.5

2.0

MAIFI

(average

frequency of

momentary

interruptions)

14

SAIDIChart

SAIDI = the cumulative amount of time the average customer is interrupted by “sustained” outages each year.

Causes of Repair Outages in Indian Wells

2019

Equipment Failure

79.0%

Operation

12.3%

Other

3.0%

Vegetation /Animal

0.0%

Weather /Fire

/Earthquake

5.7%

PSPS

0.0%

Contributions to SAIDI by Outage Cause

3rd Party

Equipment Failure

Operation

Other

Vegetation /Animal

Weather /Fire /Earthquake

PSPS

Equipment Failure

e.g., in-service failure of transformer, switch, or conductors

Vegetation/Animale.g., tree branch, rodent, or bird

causing a short circuit between conductors

Othere.g., patrolled but no cause found,

PSPS Operations

e.g., urgent maintenance w/o 3-daynotice

3rd Party e.g., balloon, car hit pole, dig-in

PSPS

e.g., Public Safety Power Shutoff

15

SAIFIChart

SAIFI = the number of times the average customer is interrupted by “sustained” outages each year

Causes of Repair Outages in Indian Wells

2019

Equipment Failure

69.7%

Operation

13.1%

Other

3.8%

Vegetation /Animal

0.1%Weather /Fire

/Earthquake

13.3%

PSPS

0.0%

Contributions to SAIFI by Outage Cause

3rd Party

Equipment Failure

Operation

Other

Vegetation /Animal

Weather /Fire /Earthquake

PSPS

Equipment Failure

e.g., in-service failure of transformer, switch, or conductors

Vegetation/Animale.g., tree branch, rodent, or bird

causing a short circuit between conductors

Othere.g., patrolled but no cause found

Operationse.g., urgent maintenance w/o 3-day

notice 3rd Party

e.g., balloon, car hit pole, dig-in

PSPS

e.g., Public Safety Power Shutoff

16

17

18

Back-up Slides

Reliability Histories of Circuits Serving Indian Wells

Updated through Dec 2019

19

CitySummary

SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI SAIDI SAIFI MAIFI

54.7 1.0 0.5 187.3 1.2 0.5 19.4 0.3 0.4 22.2 0.2 0.3 10.1 0.1 0.1 37.5 0.3 0.1 22.5 0.3 0.1 92.4 0.8 0.6

3rd Party - - - 7% 4% 16% 2% 2% 32% - - - - - - - - - - - - - - -

Equipment Failure 77% 47% 88% 86% 81% 41% 70% 36% 18% 72% 76% 79% 100% 99% 100% 95% 87% 73% 51% 34% 40% 79% 70% 73%

Operation 9% 6% - 3% 9% 4% 17% 49% 17% 27% 23% 21% 0% 1% - 5% 13% 27% 14% 11% 60% 12% 13% 27%

Other 14% 47% 12% 0% 0% 28% 11% 13% 33% - - - - - - - - - 12% 12% - 3% 4% -

Vegetation/Animal - - - - - - - - - - - - 0% 1% - - - - - - - 0% 0% -

Weather/Fire/Earthquake - - - 4% 5% 11% - - - 1% 0% - - - - - - - 23% 43% - 6% 13% -

PSPS - - - - - - - - - - - - - - - - - - - - - - - -

SCE SYSTEMWIDE 134.5 1.1 1.6 139.7 1.2 1.8 136.8 0.9 1.4 28.1 0.3 0.4 18.9 0.2 0.4 31.8 0.2 0.3 99.3 0.3 0.3 178.0 1.0 1.4

2nd Qtr 2019 3rd Qtr 2019

17 Circuits Serving Indian Wells -- Total

Customers: 18,335

Average Reliability of 17 Circuits Serving Indian Wells

4th Qtr 2019 20192016 2017 2018 1st Qtr 2019

Notes:

No outages are excluded from the metrics.

Outage Causes: Other: e.g., patrolled but no cause could be foundOperations: e.g., urgent maintenance w/o 3-day notice to customers3rd Party: e.g., balloons, car hit pole, dig-inVegetation/Animal: e.g., tree branch, rodent, or bird causing short circuit across conductorsPSPS: e.g., Public Safety Power Shutoff

SAIDI (minutes) = the cumulative amount of time the average customer is interrupted by “sustained” (longer than 5 minutes) outages.

SAIFI (interruptions) = the number of times the average customer is interrupted by “sustained” outages.

MAIFI (interruptions) = the number of times the average customer is interrupted by “momentary " (lasting 5 minutes or less) outages.

20

CircuitHistory1


AZTEC(12KV) - Customers: 1,481 18.1 0.1 - 295.3 2.4 0.8 4.2 0.0 - - - - 0.2 0.0 - - - - 0.9 0.0 - 1.0 0.0 -

3rd Party - - - - - - - - - - - - - - - - - - - - - - - -

Equipment Failure 58% 46% - 100% 99% 100% 13% 14% - - - - 100% 100% - - - - 100% 100% - 100% 100% -

Operation 42% 54% - 0% 1% - 87% 86% - - - - - - - - - - - - - - - -

Other - - - - - - - - - - - - - - - - - - - - - - - -

Vegetation/Animal - - - - - - - - - - - - - - - - - - - - - - - -

Weather/Fire/Earthquake - - - - - - - - - - - - - - - - - - - - - - - -

PSPS - - - - - - - - - - - - - - - - - - - - - - - -

CAHUILLA(12KV) - Customers: 1,409 - - - 12.1 0.1 0.9 - - - 2.7 0.0 - - - - - - - 2.1 0.0 - 4.7 0.0 -

3rd Party - - - 84% 88% 100% - - - - - - - - - - - - - - - - - -

Equipment Failure - - - 16% 12% - - - - - - - - - - - - - 100% 100% - 44% 54% -

Operation - - - - - - - - - - - - - - - - - - - - - - - -

Other - - - - - - - - - - - - - - - - - - - - - - - -


Weather/Fire/Earthquake - - - - - - - - - 100% 100% - - - - - - - - - - 56% 46% -

PSPS - - - - - - - - - - - - - - - - - - - - - - - -

DEEP CANYON(12KV) - Customers: 365 12.1 0.1 - 7.9 1.0 1.0 5.4 0.0 - - - - - - - - - - - - - - - -

3rd Party - - - - - - - - - - - - - - - - - - - - - - - -

Equipment Failure 100% 100% - - - - - - - - - - - - - - - - - - - - - -

Operation - - - 100% 100% 100% 100% 100% - - - - - - - - - - - - - - - -

Other - - - - - - - - - - - - - - - - - - - - - - - -



PSPS - - - - - - - - - - - - - - - - - - - - - - - -

INCA(12KV) - Customers: 1,537 63.8 0.6 - 246.0 2.2 0.7 2.0 0.0 - 13.6 0.1 - - - - 0.9 0.0 - - - - 14.6 0.1 -

3rd Party - - - - - - - - - - - - - - - - - - - - - - - -

Equipment Failure 59% 69% - 100% 100% 100% 100% 100% - 100% 100% - - - - 100% 100% - - - - 100% 100% -

Operation 41% 31% - - - - - - - - - - - - - - - - - - - - - -

Other - - - - - - - - - - - - - - - - - - - - - - - -



PSPS - - - - - - - - - - - - - - - - - - - - - - - -

Reliability Histories for Individual Circuits Serving Indian Wells - 1 of 5

2016 2017 2018 1st Qtr 2019 2nd Qtr 2019 3rd Qtr 2019 4th Qtr 2019 2019

21

CircuitHistory2


INCH(12KV) - Customers: 1,258 73.9 1.2 1.0 438.2 0.9 1.0 124.4 2.1 1.4 0.1 0.0 - 3.9 0.1 0.9 - - - 54.0 1.0 - 58.0 1.1 0.9

3rd Party - - - - - - - - - - - - - - - - - - - - - - - -

Equipment Failure 88% 98% 100% 96% 81% - 88% 51% 32% 100% 100% - 100% 100% 100% - - - 15% 4% - 21% 10% 100%

Operation 12% 2% - 4% 19% - 12% 49% 68% - - - - - - - - - - - - - - -

Other - - - - - 100% - - - - - - - - - - - - 0% 0% - 0% 0% -


Weather/Fire/Earthquake - - - - - - - - - - - - - - - - - - 85% 96% - 79% 90% -

PSPS - - - - - - - - - - - - - - - - - - - - - - - -

LA QUINTA(33KV) - Customers: 1 833.5 0.5 1.0 442.0 1.5 - 29.0 3.0 - - - - - - - - - - 36.2 0.6 0.6 36.2 0.6 0.6

3rd Party - - - - - - - - - - - - - - - - - - - - - - - -

Equipment Failure - - - 100% 100% - 21% 33% - - - - - - - - - - - - 100% - - 100%

Operation - - - - - - 79% 67% - - - - - - - - - - - - - - - -

Other 100% 100% 100% - - - - - - - - - - - - - - - - - - - - -



PSPS - - - - - - - - - - - - - - - - - - - - - - - -

MANITOU(12KV) - Customers: 2,043 18.7 1.0 - 62.6 0.6 0.4 - - 1.0 - - - - - - 7.3 0.0 - - - - 7.3 0.0 -

3rd Party - - - - - - - - 100% - - - - - - - - - - - - - - -

Equipment Failure - - - 3% 2% - - - - - - - - - - 31% 31% - - - - 31% 31% -

Operation 5% 1% - - - - - - - - - - - - - 69% 69% - - - - 69% 69% -

Other 95% 99% - - - - - - - - - - - - - - - - - - - - - -


Weather/Fire/Earthquake - - - 97% 98% 100% - - - - - - - - - - - - - - - - - -

PSPS - - - - - - - - - - - - - - - - - - - - - - - -

MAYAN(12KV) - Customers: 1,404 15.0 1.0 - 611.6 1.6 - 2.4 0.0 - - - - 9.5 0.1 - 16.5 0.1 - - - - 26.0 0.1 -

3rd Party - - - - - - - - - - - - - - - - - - - - - - - -

Equipment Failure - - - 98% 85% - 100% 100% - - - - 98% 91% - 98% 60% - - - - 98% 77% -

Operation - - - 2% 15% - - - - - - - - - - 2% 40% - - - - 1% 18% -

Other 100% 100% - - - - - - - - - - - - - - - - - - - - - -

Vegetation/Animal - - - - - - - - - - - - 2% 9% - - - - - - - 1% 5% -


PSPS - - - - - - - - - - - - - - - - - - - - - - - -

2019


2016 2017 2018 1st Qtr 2019 2nd Qtr 2019 3rd Qtr 2019 4th Qtr 2019

22

CircuitHistory3


MOHICAN(12KV) - Customers: 1,299 198.3 1.8 2.5 139.4 2.0 1.5 17.6 0.1 - 176.7 1.5 3.8 0.3 0.0 - 176.4 1.2 - - - - 353.4 2.7 3.8

3rd Party - - - - - - - - - - - - - - - - - - - - - - - -

Equipment Failure 100% 100% 100% 93% 91% 34% 100% 100% - 52% 62% 76% - - - 100% 100% - - - - 76% 79% 76%

Operation - - - 7% 9% - - - - 48% 38% 24% 100% 100% - - - - - - - 24% 21% 24%

Other - - - - - 66% - - - - - - - - - - - - - - - - - -



PSPS - - - - - - - - - - - - - - - - - - - - - - - -

NUSBAUM(12KV) - Customers: 498 9.1 0.2 - 403.0 1.4 - - - - 57.7 0.4 - - - - 94.5 2.4 0.9 118.7 1.3 - 271.0 4.1 0.9

3rd Party - - - - - - - - - - - - - - - - - - - - - - - -

Equipment Failure - - - 100% 97% - - - - 100% 100% - - - - 55% 54% - 8% 8% - 44% 44% -

Operation 100% 100% - 0% 3% - - - - - - - - - - 45% 46% 100% 6% 4% - 19% 28% 100%

Other - - - - - - - - - - - - - - - - - - 86% 88% - 38% 28% -



PSPS - - - - - - - - - - - - - - - - - - - - - - - -

PALM CITY(12KV) - Customers: 1,086 15.3 1.0 - 98.9 1.4 0.5 13.5 0.1 - - - - - - - - - - 9.9 0.1 - 9.9 0.1 -

3rd Party - - - - - - 61% 78% - - - - - - - - - - - - - - - -

Equipment Failure - - - 100% 100% 100% 39% 22% - - - - - - - - - - 100% 100% - 100% 100% -

Operation - - - - - - - - - - - - - - - - - - - - - - - -

Other 100% 100% - - - - - - - - - - - - - - - - - - - - - -



PSPS - - - - - - - - - - - - - - - - - - - - - - - -

SHERYL(12KV) - Customers: 1,186 - - - 8.3 0.1 - - - - - - - - - - 191.7 1.3 1.2 195.7 1.6 0.8 387.4 2.9 2.0

3rd Party - - - - - - - - - - - - - - - - - - - - - - - -

Equipment Failure - - - - - - - - - - - - - - - 100% 98% 100% 93% 90% 100% 96% 94% 100%

Operation - - - - - - - - - - - - - - - 0% 2% - 7% 10% - 4% 6% -

Other - - - 100% 100% - - - - - - - - - - - - - - - - - - -



PSPS - - - - - - - - - - - - - - - - - - - - - - - -



23

CircuitHistory4


SOBOBA(12KV) - Customers: 498 31.5 1.1 1.0 6.0 0.0 - 10.3 0.1 - - - - - - - 6.2 0.1 - - - - 6.2 0.1 -

3rd Party - - - - - - - - - - - - - - - - - - - - - - - -

Equipment Failure 42% 3% 100% 64% 41% - 38% 83% - - - - - - - - - - - - - - - -

Operation 10% 9% - 36% 59% - 62% 17% - - - - - - - 100% 100% - - - - 100% 100% -

Other 48% 88% - - - - - - - - - - - - - - - - - - - - - -



PSPS - - - - - - - - - - - - - - - - - - - - - - - -

TAKOTA(12KV) - Customers: 883 92.0 1.8 1.5 266.1 1.0 - - - - 136.2 1.0 1.0 17.0 0.9 - - - - - - - 153.2 1.9 1.0

3rd Party - - - 100% 100% - - - - - - - - - - - - - - - - - - -

Equipment Failure 100% 100% 100% - - - - - - 100% 100% 100% 100% 100% - - - - - - - 100% 100% 100%

Operation - - - - - - - - - - - - - - - - - - - - - - - -

Other - - - - - - - - - - - - - - - - - - - - - - - -



PSPS - - - - - - - - - - - - - - - - - - - - - - - -

TOLTEC(12KV) - Customers: 1,298 15.0 1.0 - 191.3 2.9 - - - - - - - 115.5 0.5 - 132.6 1.0 - 26.4 0.1 - 274.5 1.6 -

3rd Party - - - - - - - - - - - - - - - - - - - - - - - -

Equipment Failure - - - 95% 87% - - - - - - - 100% 100% - 100% 100% - - - - 90% 92% -

Operation - - - 5% 13% - - - - - - - 0% 0% - - - - 100% 100% - 10% 8% -

Other 100% 100% - - - - - - - - - - - - - - - - - - - - - -



PSPS - - - - - - - - - - - - - - - - - - - - - - - -

TON(12KV) - Customers: 907 46.0 1.0 - 49.7 0.2 - 57.5 1.7 3.0 - - - - - - - - - 47.0 1.0 - 47.0 1.0 -

3rd Party - - - - - - - - - - - - - - - - - - - - - - - -

Equipment Failure 100% 100% - 96% 70% - 3% 1% 22% - - - - - - - - - 3% 2% - 3% 2% -

Operation - - - 4% 30% - 26% 59% - - - - - - - - - - - - - - - -

Other - - - - - - 71% 40% 78% - - - - - - - - - - - - - - -



PSPS - - - - - - - - - - - - - - - - - - - - - - - -



24

CircuitHistory5


TRIBAL(12KV) - Customers: 1,182 241.2 2.7 1.7 49.4 0.3 - 83.0 0.2 - 0.1 0.0 - - - - - - - 6.0 0.1 1.0 6.1 0.1 1.0

3rd Party - - - - - - - - - - - - - - - - - - - - - - - -

Equipment Failure 84% 50% 40% 68% 28% - 88% 47% - 100% 100% - - - - - - - - - - 2% 1% -

Operation 9% 13% - 32% 72% - 12% 53% - - - - - - - - - - 100% 100% 100% 98% 99% 100%

Other 6% 37% 60% - - - - - - - - - - - - - - - - - - - - -



PSPS - - - - - - - - - - - - - - - - - - - - - - - -

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PowerPoint Presentation · its infrastructure. SCE’s investments support safe, reliable, affordable, and clean energy for our customers 2019 Capital Investments 179 miles of underground

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