County annual report · FIPS 53075
2025 Whitman County, WA Power Outage Report
In 2025, customers in Whitman County, WA went without power for an average of 4.5 hours, a total of 211K customer-hours (Washington average 7.0 hours). That ranks 24th worst of 33 Washington counties and 1646th 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 Whitman 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 17, 2025 12:15 | December 22, 2025 23:15 | 5d 11h | 5,825 | 145K |
| 2 | November 16, 2025 03:45 | November 16, 2025 09:45 | 6h | 1,938 | 3,472 |
| 3 | February 1, 2025 03:30 | February 1, 2025 05:30 | 2h | 1,845 | 2,401 |
| 4 | October 1, 2025 21:15 | October 2, 2025 00:45 | 3h 30m | 1,586 | 940 |
| 5 | August 13, 2025 17:15 | August 15, 2025 14:00 | 1d 20h | 978 | 7,526 |
| 6 | July 22, 2025 02:30 | July 22, 2025 13:45 | 11h 15m | 866 | 2,200 |
| 7 | February 8, 2025 21:00 | February 9, 2025 04:30 | 7h 30m | 862 | 1,539 |
| 8 | January 13, 2025 13:00 | January 13, 2025 20:00 | 7h | 854 | 3,804 |
| 9 | February 23, 2025 11:45 | February 24, 2025 12:00 | 1d | 801 | 1,868 |
| 10 | January 1, 2025 00:00 | January 1, 2025 01:45 | 1h 45m | 608 | 1,064 |
Outage episodes by size in 2025: 50 reached 100+ customers, 4 reached 1,000+ customers, 0 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 Whitman 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 |
|---|---|---|---|---|---|
| Avista Corp | 2024 | 3.1 hrs | 1.11 | 2.3 hrs | 0.94 |
| Inland Power & Light Company | 2024 | 6.4 hrs | 1.20 | 4.6 hrs | 1.09 |
| Clearwater Power Company | 2018 | 16.6 hrs | 3.16 | 12.0 hrs | 2.91 |
| Big Bend Electric Coop, Inc | 2024 | 4.1 hrs | 0.93 | 3.2 hrs | 0.79 |
| Avista Corp,avista | - | - | - | - | - |
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 ÷ 47,409 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. Whitman County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Whitman 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/whitman-county