County annual report · FIPS 53033
2024 King County, WA Power Outage Report
In 2024, customers in King County, WA went without power for an average of 27.5 hours, a total of 26.5M customer-hours (Washington average 12.1 hours). That ranks 1st worst of 34 Washington counties and 352nd of 2,990 nationally.
Compared with WA, the US and 2023
Coverage line is EAGLE-I's share of Washington customers tracked each year.
Biggest outages in King County, 2024
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | November 8, 2024 17:00 | January 1, 2025 00:00 | 53d 7h | 518,386 | 22.9M |
| 2 | September 3, 2024 00:00 | September 16, 2024 11:45 | 13d 11h | 197,763 | 234K |
| 3 | August 10, 2024 08:45 | August 22, 2024 07:15 | 11d 22h | 49,126 | 413K |
| 4 | January 7, 2024 16:30 | January 21, 2024 04:15 | 13d 11h | 47,661 | 606K |
| 5 | June 1, 2024 14:00 | June 19, 2024 13:30 | 17d 23h | 45,235 | 441K |
| 6 | March 8, 2024 15:00 | March 12, 2024 12:45 | 3d 21h | 32,362 | 166K |
| 7 | April 19, 2024 13:45 | April 22, 2024 11:45 | 2d 22h | 24,804 | 119K |
| 8 | February 12, 2024 06:30 | March 3, 2024 23:45 | 20d 17h | 18,706 | 225K |
| 9 | September 16, 2024 13:30 | November 8, 2024 16:15 | 53d 2h | 14,358 | 412K |
| 10 | April 2, 2024 14:45 | April 19, 2024 13:00 | 16d 22h | 12,146 | 93K |
Outage episodes by size in 2024: 33 reached 100+ customers, 23 reached 1,000+ customers, 11 reached 10,000+ customers.
Utility reliability filed with the EIA
SAIDI (average outage time per customer) and SAIFI (average interruptions per customer) that utilities serving King County reported on EIA Form 861 for 2024, or their most recent earlier filing. Utility-wide figures, not county-specific.
| Utility | EIA year | SAIDI | SAIFI | SAIDI excl. major events | SAIFI excl. major events |
|---|---|---|---|---|---|
| Puget Sound Energy Inc | 2024 | 19.9 hrs | 2.20 | 3.4 hrs | 1.20 |
| City of Tacoma - (WA) | 2024 | 2.8 hrs | 0.93 | 80 min | 0.55 |
| PUD No 1 of Chelan County | 2024 | 2.9 hrs | 0.96 | 1.6 hrs | 0.74 |
| City of Seattle - (WA) | 2024 | 5.4 hrs | 1.12 | 1.8 hrs | 0.76 |
| Bonneville Power Administration | - | - | - | - | - |
| Puget Sound Energy Inc,pugetsoundenergy | - | - | - | - | - |
| Tanner Electric Coop | - | - | - | - | - |
| City of Milton - (WA) | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about n/a of Washington's customers in 2024; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 963,744 customers (ORNL modeled county customer count), including major storm days. It is comparable across counties but is not the SAIDI a utility files.
- An outage event is a continuous stretch with customers out; counts at 100, 1,000 and 10,000+ use its peak.
- Years loaded: 2015–2025. King County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), King County, WA annual power outage report, 2024, data as of Oct 3, 2026 02:41 UTC, sources: DOE EAGLE-I (https://eagle-i.doe.gov/); EAGLE-I modeled customer counts (MCC) (https://figshare.com/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2024/washington/king-county