County annual report · FIPS 53075
2023 Whitman County, WA Power Outage Report
In 2023, customers in Whitman County, WA went without power for an average of 1.4 hours, a total of 67K customer-hours (Washington average 2.6 hours). That ranks 26th worst of 33 Washington counties and 2512th of 2,977 nationally.
Compared with WA, the US and 2022
Coverage line is EAGLE-I's share of Washington customers tracked each year.
Biggest outages in Whitman County, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | August 29, 2023 17:45 | August 31, 2023 00:00 | 1d 6h | 3,807 | 10K |
| 2 | April 18, 2023 19:30 | April 18, 2023 20:00 | 30m | 1,475 | 371 |
| 3 | March 10, 2023 18:30 | March 13, 2023 15:00 | 2d 20h | 1,014 | 1,096 |
| 4 | June 9, 2023 22:45 | June 10, 2023 05:30 | 6h 45m | 879 | 1,417 |
| 5 | July 29, 2023 20:00 | July 30, 2023 01:45 | 5h 45m | 792 | 222 |
| 6 | August 18, 2023 19:30 | August 18, 2023 20:15 | 45m | 786 | 207 |
| 7 | June 13, 2023 16:30 | June 13, 2023 22:00 | 5h 30m | 610 | 1,762 |
| 8 | April 26, 2023 15:45 | May 1, 2023 13:30 | 4d 21h | 564 | 14K |
| 9 | January 31, 2023 14:15 | January 31, 2023 22:15 | 8h | 557 | 2,271 |
| 10 | December 19, 2023 18:00 | December 19, 2023 21:30 | 3h 30m | 453 | 244 |
Outage episodes by size in 2023: 38 reached 100+ customers, 3 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 2023, 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 | 2023 | 2.5 hrs | 0.90 | 2.1 hrs | 0.83 |
| Inland Power & Light Company | 2023 | 3.6 hrs | 1.20 | 3.4 hrs | 1.09 |
| Clearwater Power Company | 2018 | 16.6 hrs | 3.16 | 12.0 hrs | 2.91 |
| Big Bend Electric Coop, Inc | 2023 | 5.3 hrs | 1.13 | 3.8 hrs | 1.01 |
| 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 2023; 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, 2023, 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/2023/washington/whitman-county