County annual report · FIPS 53029
2021 Island County, WA Power Outage Report
In 2021, customers in Island County, WA went without power for an average of 32.7 hours, a total of 2.8M customer-hours (Washington average 8.7 hours). That ranks 1st worst of 33 Washington counties and 278th of 2,974 nationally.
Compared with WA, the US and 2020
Coverage line is EAGLE-I's share of Washington customers tracked each year.
Biggest outages in Island County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | January 13, 2021 05:30 | January 18, 2021 00:00 | 4d 18h | 48,278 | 1.1M |
| 2 | November 15, 2021 10:45 | November 20, 2021 09:30 | 4d 22h | 39,506 | 1.1M |
| 3 | September 17, 2021 16:15 | September 20, 2021 06:45 | 2d 14h | 22,186 | 197K |
| 4 | December 8, 2021 03:30 | December 9, 2021 18:15 | 1d 14h | 20,769 | 193K |
| 5 | March 5, 2021 17:00 | March 6, 2021 05:30 | 12h 30m | 5,289 | 10K |
| 6 | June 17, 2021 14:15 | June 17, 2021 15:45 | 1h 30m | 5,112 | 7,291 |
| 7 | February 19, 2021 05:00 | February 19, 2021 08:00 | 3h | 5,043 | 5,151 |
| 8 | March 28, 2021 16:15 | March 29, 2021 22:15 | 1d 6h | 4,200 | 18K |
| 9 | December 22, 2021 13:30 | December 22, 2021 16:00 | 2h 30m | 3,371 | 4,302 |
| 10 | September 30, 2021 06:30 | October 1, 2021 03:00 | 20h 30m | 2,973 | 5,109 |
Outage episodes by size in 2021: 80 reached 100+ customers, 32 reached 1,000+ customers, 4 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 Island County reported on EIA Form 861 for 2021, 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 | 2021 | 14.2 hrs | 2.27 | 3.5 hrs | 1.26 |
| PUD No 1 of Snohomish County | 2021 | 10.7 hrs | 2.24 | 2.3 hrs | 1.29 |
| Puget Sound Energy Inc,pugetsoundenergy | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 87% of Washington's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 87,196 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. Island County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Island County, WA annual power outage report, 2021, 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/2021/washington/island-county