County annual report · FIPS 53075
2021 Whitman County, WA Power Outage Report
In 2021, customers in Whitman County, WA went without power for an average of 1.9 hours, a total of 90K customer-hours (Washington average 8.7 hours). That ranks 24th worst of 33 Washington counties and 2264th 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 Whitman 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 | November 16, 2021 00:00 | November 17, 2021 02:00 | 1d 2h | 2,109 | 1,911 |
| 2 | August 20, 2021 18:30 | August 21, 2021 01:30 | 7h | 2,091 | 2,433 |
| 3 | April 19, 2021 03:30 | April 19, 2021 22:30 | 19h | 1,886 | 15K |
| 4 | April 25, 2021 14:30 | April 25, 2021 21:45 | 7h 15m | 1,485 | 1,550 |
| 5 | September 11, 2021 01:30 | September 12, 2021 00:00 | 22h 30m | 1,474 | 4,951 |
| 6 | September 18, 2021 09:30 | September 18, 2021 10:45 | 1h 15m | 900 | 1,125 |
| 7 | July 1, 2021 10:00 | July 1, 2021 23:00 | 13h | 868 | 4,752 |
| 8 | January 13, 2021 11:45 | January 17, 2021 08:00 | 3d 20h | 779 | 10K |
| 9 | August 31, 2021 22:00 | September 1, 2021 01:00 | 3h | 772 | 2,124 |
| 10 | June 18, 2021 04:45 | June 18, 2021 12:00 | 7h 15m | 722 | 4,903 |
Outage episodes by size in 2021: 37 reached 100+ customers, 5 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 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 |
|---|---|---|---|---|---|
| Avista Corp | 2021 | 16.1 hrs | 2.31 | 2.9 hrs | 1.29 |
| Inland Power & Light Company | 2021 | 11.9 hrs | 1.85 | 3.4 hrs | 1.24 |
| Clearwater Power Company | 2018 | 16.6 hrs | 3.16 | 12.0 hrs | 2.91 |
| Avista Corp,avista | - | - | - | - | - |
| Big Bend Electric Coop, Inc | - | - | - | - | - |
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 ÷ 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, 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/whitman-county