HomeMy WebLinkAboutReg 2025-08-04 Item 5A - Presentation - Seattle City Light UpdateWE POWER SEATTLE
Seattle City Light
Presentation to City of Tukwila Council Meeting | August 04, 2025
3
2
City Light Presenters
Andrew Strong
Environmental,
Engineering, and
Project Delivery Officer
Dawn Lindell
General Manager and
Chief Executive Officer
Mike Haynes
Chief Operating
Officer 4
3
•522K Meters
•9.05 Million Megawatt-hours
•468K Residential customers
•50K Commercial customers
•Service area 131 square miles
•Population served ~ 961,000
•2025 Expected Total Revenue $1.7B
•First utility to achieve 100% net carbon neutrality (2005)
City Light Snapshot
5
4
Reliability Compared to Other Large Municipal Utilities
*Industry average as reported by the Omaha Public Power Corporate Key Indicator Benchmarking Study. It includes 14 public pow er utilities.
53.8
61.7 65.0
72.6
60.1
82.4
58.3
75.2
67.0
106.7 101.2 95.7
119.8
0
20
40
60
80
100
120
140
2018 2019 2020 2021 2022 2023 2024Average Outage Minutes Per IncidentCity Light Outage Duration vs Industry Average
Industry Average City Light SAIDI6
5
Higher Rate Increases Across the Region
RESIDENTIAL RATE INCREASES & PROPOSALS
Utility 2023 2024 2025 2026 Avg. Annual
Change
Seattle City Light 3.4%5.5%4.1%4.8%4.5%
Tacoma Power 3.9%3.9%6.5%6.5%5.2%
Puget Sound Energy 8.7%1.7%12.0%6.3%7.2%
Snohomish PUD 2.0%5.8%4.9%tba1 4.2%
Portland General 7.0%18.0%5.5%1.6%2 10.2%
Avista - Washington 5.0%2.0%1.7%3 4.4%3.8%7
Mike Haynes
Chief Operating Officer
Outage Data8
7
Unplanned Outages By Year (2020 – June 2025*)
202020212022202320242025*
Allentown 7 8 6 8 11 5
Tukwila 20 30 19 28 25 12
0
5
10
15
20
25
30
35
40
Number of Unplanned Outages•Unplanned outages remain relatively stable over time
9
8
Tukwila Outage Data by Cause Type (Jan 2020 – Jun 2025)
Outage Cause 202020212022202320242025*Total
Equipment Failure 7128119350
Planned Outage 88510334
Trees 59437331
Bird / Animal 415616
Lightning 1111
Car / Pole 21148
Fire 31127
Unknown 4217
Other 112
Operator Error 11
Customer Problem 11
Total 203827333515168
•Tukwila’s outage trends align with SCL service territory overall:
•Majority (48%) of all outages are due to unforeseen circumstances (e.g., trees, animals, car/pole, etc.)
•Equipment failure is the main singular cause (30% of all outages)10
9
Allentown Outage Data by Cause Type (Jan 2020 – Jun 2025*)
Outage Cause 2020 2021 2022 2023 2024 2025*Total
Trees 1 2 2 7 1 13
Equipment Failure 2 2 2 3 9
Planned Outage 2 2 3 1 8
Car / Pole 2 3 1 1 7
Unknown 1 3 1 5
Bird / Animal 1 1 1 3
Operator Error 1 1 1 3
Other 1 1 2
Dig Up 2 2
Fire 1 1
Total 9 10 9 8 12 5 53
•Majority (62%) of all outages are due to unforeseen circumstances (e.g., trees, animals, car/pole, etc.)
•Trees are the main singular cause of outages (25% of all outages)11
10
Streetlights and Floodlights in Tukwila
•1467 streetlights
•129 floodlights
•1287 maintained by City Light
•2 Non-functioning
•309 maintained by City of Tukwila12
11
•5-year trim cycle
•Radial clearance of 10+ feet
•Trim 2025 Q3
•Predictive, Risk-Based Approach: Leveraging
LiDAR, satellite imagery, and AI -powered
analytics within Work Studio to target high -risk
areas—moving beyond traditional cycle-based
trimming.
•Proactive Grid Resilience: Enables real-time
vegetation monitoring, prioritizes fall-in risk
mitigation, reduces outages, and optimizes crew
deployment for a smarter, data-driven response.
Vegetation Management Tukwila 13
Andrew Strong, Environmental,
Engineering, and Project
Delivery Officer
Electric Grid –
Transmission to
Distribution:Investments
& Reliability14
13
•Fed from Creston-Nelson and
Duwamish Substations:
Sufficient available capacity
•Duwamish Substation upgrade
$9.5M
•Creston Nelson Substation
Upgrade $13M
Substation System Improvements
15
14
System Work Outside of
Substations:
•Pole Replacement
Program
•Transformer Replacement
Program
Distribution System in Tukwila & Allentown16
Culture
Dawn Lindell,
General Manager and Chief
Executive Officer
17
18
19
Mission, Vision, and Values
WE POWER SEATTLEWE POWER SEATTLE20
SCL territory, Lake Forest Park, & Shoreline
Outage information
January 2020 – June 2025
Appendix
21
20
SCL Outage Data (Jan 2020 – Jun 2025)
SCL 2020 2021 2022 2023 2024 2025 Total
Bird / Animal 130 99 131 133 142 60 695
Car / Pole 27 31 35 24 16 18 151
Equipment
Failure 342 357 313 288 373 163 1,836
Trees 130 229 220 111 293 82 1,065
Planned 223 319 252 267 326 177 1,564
Fire 13 21 11 13 11 5 74
Lightning 57 7 1 54 27 9 157
Ice / Snow 3 3
Operator Error 3 3 9 4 3 4 26
Other 19 26 30 26 28 13 142
Customer
Problem 2 7 3 5 4 21
Dig Up 2 3 1 2 2 10
Unknown 27 67 42 41 73 23 273
Total 975 1,172 1,048 968 1,298 556 6,01722
21
Lake Forest Park Outage Data (Jan 2020 – Jun 2025)
LFP 2020 2021 2022 2023 2024 2025 Total
Bird / Animal 9 5 3 10 3 1 31
Car / Pole 2 1 3
Equipment
Failure 18 16 26 27 28 11 126
Trees 29 41 69 16 51 8 214
Planned 10 8 7 3 19 7 54
Fire 1 2 1 1 4
Lightning
Ice / Snow
Operator Error 2 2
Other 1 2 2 2 2 2 11
Customer
Problem
Dig Up
Unknown 2 3 4 1 1 12
Total 70 76 111 66 104 30 457
23
22
Shoreline Outage Data (Jan 2020 – Jun 2025)
Shoreline 2020 2021 2022 2023 2024 2025 Total
Bird / Animal 5 4 6 9 11 3 38
Car / Pole 2 1 1 1 5
Equipment
Failure 19 33 35 30 29 14 160
Trees 12 29 42 11 33 8 135
Planned 9 10 16 22 50 3 110
Fire 1 1 2
Lightning 1 1 2
Ice / Snow
Operator Error 1 1 2
Other 1 2 2 1 3 9
Customer
Problem
Dig Up 1 1 2
Unknown 1 4 3 2 1 11
Total 49 85 107 76 130 29 47624