Agenda Item B.1
PRESENTATION
Meeting Date: October 3, 2023
Southern California Edison Circuit Reliability Review Presentation 1 Circuit Reliability Review
Goleta
2023
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 through 5
million customer accounts
• 15 counties, 185 cities and 13
Native American tribes
Who We Are
3 Our Grid
To deliver safe, reliable, and affordable power,
we monitor and maintain a vast electricity system
753,000 Transformers
126,000 Miles of Transmission
and Distribution Lines
5,900 Circuits
1.7 Million Poles
50,000 Square Miles
4 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 2022 Capital Investments
36 miles of
underground cable replaced
119 miles of overhead conductor
replaced for public safety
24.5k distribution poles replaced
4.3k transmission poles replaced
24 underground structure
replacements
5 Protecting Public Safety: Wildfire Mitigation Activities 2022 Year-End Progress Report – Data as of 12/31/22
6 Protecting Public Safety: Public Safety Power Shutoffs • SCE implements Public Safety Power Shutoffs
(PSPS) to temporarily shut off power to some
communities when there is a high risk for
wildfire to prevent the electric system from
becoming the source of ignition
• PSPS is used as a measure of last resort to
protect public safety under dangerous fire
weather conditions, including high winds, low
humidity, and dry vegetation
• Multiple methods are used to notify customers
and stakeholders in impacted areas before,
during and after a PSPS event
• SCE provides resources to support customers
during PSPS and offers several programs and
rebates to help customers be prepared and
more resilient during emergencies
• SCE is working to reduce the impact of PSPS
and is continuing to strengthen the electric
grid to become more resilient in the face of
extreme weather events
• To learn more, visit sce.com/psps
7 SCE’s System Planning Process
• Southern California Edison (SCE)
performs annual system evaluations to
address the changing power needs
throughout its service territory
• System capacity plans are developed on
a 10-year forecast based on information
provided by customers and load
forecasting methodologies
• Accurate and timely customer
information is crucial to system planning
evaluations
• Developers should contact SCE as
early as possible to initiate discussions
with planning on power service
needs.
8 SCE’s Forecasting Process
• SCE’s forecasting team is actively engaged with internal and external stakeholders to make sure that we build a forecast that reflects current program, policies, and development plans which impact the grid
• SCE’s forecasting team uses different data sources for forecasting the future Distributed Energy Resource (DER) load such as:
▪ Customer Data such as historical customer usage and DER adoption such as electric vehicles (EV)
o Demographic and Socio-Economic Data
o Customer program and survey participation results
o Existing project development impact
o Short and long-term customer plans on DER adoption such EV charging sites
9 When Should I Contact SCE Regarding Power Needs?
Plan Ahead – Providing Energy
Capacity
Did You Know? A new 12 kV circuit
which provides about 10MW of
power (roughly 12,000 amps @480 V)
can take between 2 to 3 years to
construct.
Did you Know? A new customer-
owned substation can take between 3
to 5 years to construct.
The more project information a
customer can provide and the earlier
they can reach out to SCE concerning
the energy requirements for a new
building project (or for upgrading an
existing building) the better.
• The Short Answer: As Soon As Possible. For
example, when you contact the city to initiate
business permits, reach out to SCE as well to
discuss your plans
• SCE will always provide the power our customers
require to operate their business but upgrades
to our grid may be required. Partnering with
SCE early will help ensure that the level of power
required is delivered in both a timely – and safe –
manner
• Customers should contact SCE as early as
possible, preferably 2 years, especially for large
power requests
• Contact the appropriate planning department to
discuss and review the scope of your project,
including plans for phasing in power
10 Pathway 2045:
Key steps California must take to reach carbon neutrality Creating a Clean Energy Future
100% of grid sales with
carbon-free electricity
80 GW of utility-scale
clean generation
30 GW of utility-scale
energy storage
70% of all buildings will
use efficient electric
space and water heating
90% fewer GHG
emissions from all-
electric homes
26 million electric
vehicles
Over 1 million
electrified medium
and heavy duty
vehicles
50% reduction in natural
gas consumption
40% of the remaining
natural gas is
biomethane and
hydrogen
11 Reliability Overview
11 12
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
• Public Safety Power Shutoff (PSPS)
• Major Event Day (MED)
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, dayshaving 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). MEDs are sometimes excluded in reporting; in those reports the exclusions will be noted.
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 aretemporary and usually involve situations where high fire areas are experiencing adverse weather or public safety is at risk. 13 How Do We Measure Reliability?
Total minutes
every SCE
customer was
without power
due to sustained
outages
Total number of
customers
SAIDI
System Average
Interruption
Duration Index
Total number of
sustained
customer outages
experienced by
SCE customers (CI)
Total number of
customers
SAIFI
System Average
Interruption
Frequency Index
Total number of
momentary
customer outages
experienced by
SCE customers (CI)
Total number of
customers
MAIFI
Momentary
Average
Interruption
Frequency Index
What’s the average
amount of time my power
service will be
unexpectedly interrupted?
What’s the average
number of times my
power service will be
unexpectedly interrupted?
What’s the average
number of times my
power service will be
momentarily (< 5 minutes)
interrupted?
14 CircuitList1
Overview of Goleta
There are 13 circuits that serve Goleta 1
Circuit Type Customers Circuit Type Customers Circuit Type Customers Circuit Type Customers ACE(16KV) 1,341 - - -
BIDDER(16KV) 140 - - -
ENCANTO(16KV) 2,474 - - -
FRATERNITY(16KV) 3,515 - - -
GAUCHO(16KV) 1,462 - - -
GLADIOLA(16KV) 1,792 - - -
LOS CARNEROS(16KV) 1,842 - - -
PROFESSOR(16KV) 1,098 - - -
STORKE(16KV) 4,743 - - -
TECOLOTE(16KV) 2,798 - - -
TRIGO(16KV) 298 - - -
TRUMP(16KV) 135 - - -
WASP(16KV) 2,546 - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
- - - -
Grand Total 24,184
Note: The number of customers listed
represents the total number of customers on
each circuit (not the local jurisdiction).
15 Equipment Failure In-service failure of transformer, switch, or conductors Vegetation/Animal A tree branch, rodent, or bird causing a short circuit between conductors
Other The circuit was patrolled but no cause found
Operations SCE performed urgent maintenance without the standard 3-day notice
3rd Party Outage caused by a balloon, car hit pole or dig-in PSPS Public Safety Power Shutoff
sce.com/psps
SAIDI & SAIFI Cause Definitions
16 BarChart
* NO EXCLUSIONS **Data is as of 03/12/2023, data can be slightly different due to outage data validation process Historical Reliability of Circuits Serving Goleta
0.8 0.9
0.9 2.3
1.4 1.4
1.6 1.4
MAIFI
(the average frequency of
momentary interruptions)
SCE GRID Goleta
51.2 69.3
60.5 115.8
178.0
201.3
179.8
131.1
2019
2020
2021
2022
SAIDI
(the average minutes of
sustained interruptions)
0.8 0.7
0.7 1.3
1.0 1.1
1.1 1.1
SAIFI
(the average frequency of
sustained interruptions)
17 SAIDIChart
0.0%
0.9%
5.1%
7.1%
7.7%
22.9%
56.3%
PSPS
Weather /Fire /Earthquake
Operation
Vegetation /Animal
3rd Party
Other
Equipment Failure
2022 SAIDI Outage Causes for Goleta
SAIDI = the cumulative amount of time the average customer is interrupted by “sustained” outages each year. 18 SAIFIChart
0.0%
0.2%
10.3%
15.0%
16.8%
16.9%
40.8%
PSPS
Weather /Fire /Earthquake
Operation
Vegetation /Animal
3rd Party
Other
Equipment Failure
2022 SAIFI Outage Causes for Goleta
SAIFI = the number of times the average customer is interrupted by “sustained” outages each year. 19 Q&A
Reliability reports available online:
https://www.sce.com/outage-center/outage-information/reliability-reports 19 20