County annual report · FIPS 53075
2020 Whitman County, WA Power Outage Report
In 2020, customers in Whitman County, WA went without power for an average of 2.9 hours, a total of 139K customer-hours (Washington average 4.2 hours). That ranks 23rd worst of 37 Washington counties and 1899th of 3,019 nationally.
Compared with WA, the US and 2019
Coverage line is EAGLE-I's share of Washington customers tracked each year.
Biggest outages in Whitman County, 2020
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | September 7, 2020 16:15 | September 19, 2020 05:00 | 11d 12h | 2,580 | 78K |
| 2 | October 23, 2020 21:45 | October 26, 2020 07:30 | 2d 9h | 1,776 | 9,203 |
| 3 | December 26, 2020 04:30 | December 26, 2020 06:45 | 2h 15m | 1,623 | 3,249 |
| 4 | March 18, 2020 03:15 | March 18, 2020 13:15 | 10h | 732 | 634 |
| 5 | February 12, 2020 16:00 | February 13, 2020 00:45 | 8h 45m | 711 | 1,444 |
| 6 | February 1, 2020 12:00 | February 2, 2020 10:45 | 22h 45m | 659 | 1,794 |
| 7 | March 12, 2020 13:15 | March 12, 2020 23:30 | 10h 15m | 541 | 579 |
| 8 | June 8, 2020 14:00 | June 8, 2020 22:30 | 8h 30m | 493 | 841 |
| 9 | May 2, 2020 23:15 | May 3, 2020 21:15 | 22h | 476 | 2,785 |
| 10 | May 1, 2020 16:30 | May 1, 2020 20:30 | 4h | 448 | 343 |
Outage episodes by size in 2020: 43 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 2020, 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 | 2020 | 5.1 hrs | 1.56 | 2.2 hrs | 0.91 |
| Inland Power & Light Company | 2020 | 13.3 hrs | 1.97 | 3.9 hrs | 1.31 |
| 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 2020; 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, 2020, 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/2020/washington/whitman-county