County annual report · FIPS 53071
2023 Walla Walla County, WA Power Outage Report
In 2023, customers in Walla Walla County, WA went without power for an average of 1.3 hours, a total of 41K customer-hours (Washington average 2.6 hours). That ranks 27th worst of 33 Washington counties and 2544th 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 Walla Walla 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 | September 20, 2023 18:00 | September 20, 2023 20:45 | 2h 45m | 3,622 | 4,100 |
| 2 | December 14, 2023 16:30 | December 14, 2023 20:15 | 3h 45m | 2,197 | 1,868 |
| 3 | September 13, 2023 21:45 | September 14, 2023 04:45 | 7h | 2,056 | 1,106 |
| 4 | September 7, 2023 18:45 | September 7, 2023 21:15 | 2h 30m | 1,911 | 480 |
| 5 | August 15, 2023 08:45 | August 15, 2023 12:45 | 4h | 1,538 | 786 |
| 6 | May 12, 2023 06:45 | May 12, 2023 10:45 | 4h | 1,279 | 5,115 |
| 7 | August 7, 2023 13:45 | August 8, 2023 01:00 | 11h 15m | 1,192 | 2,566 |
| 8 | October 11, 2023 20:15 | October 12, 2023 00:45 | 4h 30m | 1,181 | 1,393 |
| 9 | August 15, 2023 02:00 | August 15, 2023 03:00 | 1h | 1,180 | 886 |
| 10 | September 21, 2023 07:45 | September 21, 2023 10:15 | 2h 30m | 608 | 458 |
Outage episodes by size in 2023: 37 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 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 |
|---|---|---|---|---|---|
| PacifiCorp | 2023 | 8.2 hrs | 1.42 | 1.9 hrs | 0.99 |
| Inland Power & Light Company | 2023 | 3.6 hrs | 1.20 | 3.4 hrs | 1.09 |
| Columbia Rural Elec Assn, Inc | 2023 | 1.6 hrs | 0.67 | 1.6 hrs | 0.67 |
| 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 n/a of Washington's customers in 2023; 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, 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/walla-walla-county