County annual report · FIPS 53071
2021 Walla Walla County, WA Power Outage Report
In 2021, customers in Walla Walla County, WA went without power for an average of 1.9 hours, a total of 57K customer-hours (Washington average 8.7 hours). That ranks 23rd worst of 33 Washington counties and 2255th 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 Walla Walla 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 | August 21, 2021 14:00 | August 21, 2021 21:15 | 7h 15m | 7,290 | 16K |
| 2 | June 15, 2021 20:15 | June 16, 2021 07:00 | 10h 45m | 2,297 | 4,622 |
| 3 | August 18, 2021 08:45 | August 18, 2021 14:15 | 5h 30m | 2,057 | 1,522 |
| 4 | July 7, 2021 13:15 | July 7, 2021 13:30 | 15m | 2,053 | 513 |
| 5 | January 13, 2021 00:45 | January 13, 2021 10:30 | 9h 45m | 1,993 | 2,693 |
| 6 | January 13, 2021 11:15 | January 14, 2021 04:00 | 16h 45m | 1,708 | 1,960 |
| 7 | May 6, 2021 15:45 | May 6, 2021 16:45 | 1h | 1,172 | 294 |
| 8 | September 26, 2021 20:00 | September 27, 2021 02:00 | 6h | 1,147 | 1,512 |
| 9 | December 22, 2021 17:15 | December 22, 2021 19:30 | 2h 15m | 1,111 | 1,117 |
| 10 | May 4, 2021 15:00 | May 4, 2021 16:00 | 1h | 961 | 961 |
Outage episodes by size in 2021: 26 reached 100+ customers, 9 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 Walla Walla 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 |
|---|---|---|---|---|---|
| PacifiCorp | 2021 | 4.3 hrs | 1.86 | 2.0 hrs | 1.19 |
| Inland Power & Light Company | 2021 | 11.9 hrs | 1.85 | 3.4 hrs | 1.24 |
| Columbia Rural Elec Assn, Inc | 2021 | 3.7 hrs | 1.94 | 3.1 hrs | 1.80 |
| 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 87% of Washington's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 30,050 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. Walla Walla County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Walla Walla 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/walla-walla-county