County annual report · FIPS 53007
2025 Chelan County, WA Power Outage Report
In 2025, customers in Chelan County, WA went without power for an average of 12.0 hours, a total of 606K customer-hours (Washington average 7.0 hours). That ranks 10th worst of 33 Washington counties and 652nd of 3,000 nationally.
Compared with WA, the US and 2024
Coverage line is EAGLE-I's share of Washington customers tracked each year.
Biggest outages in Chelan County, 2025
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | December 10, 2025 23:00 | December 21, 2025 07:15 | 10d 8h | 14,176 | 444K |
| 2 | September 9, 2025 05:00 | September 9, 2025 21:45 | 16h 45m | 3,834 | 44K |
| 3 | December 24, 2025 18:30 | December 24, 2025 23:30 | 5h | 3,812 | 18K |
| 4 | June 13, 2025 22:45 | June 14, 2025 02:45 | 4h | 3,805 | 15K |
| 5 | May 15, 2025 00:00 | May 15, 2025 03:00 | 3h | 3,801 | 8,923 |
| 6 | December 27, 2025 12:45 | December 27, 2025 14:00 | 1h 15m | 3,787 | 4,734 |
| 7 | December 27, 2025 05:45 | December 27, 2025 06:00 | 15m | 3,676 | 919 |
| 8 | October 13, 2025 14:30 | October 14, 2025 01:15 | 10h 45m | 2,039 | 772 |
| 9 | February 24, 2025 03:45 | February 24, 2025 10:30 | 6h 45m | 1,882 | 2,083 |
| 10 | July 29, 2025 00:00 | July 29, 2025 00:30 | 30m | 1,628 | 814 |
Outage episodes by size in 2025: 88 reached 100+ customers, 12 reached 1,000+ customers, 1 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 Chelan County reported on EIA Form 861 for 2025, 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 |
|---|---|---|---|---|---|
| PUD No 1 of Chelan County | 2024 | 2.9 hrs | 0.96 | 1.6 hrs | 0.74 |
| Bonneville Power Administration | - | - | - | - | - |
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 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 50,456 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. Chelan County has data for 2019–2025.
Cite this report
MassOutage (massoutage.com), Chelan County, WA annual power outage report, 2025, 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/2025/washington/chelan-county