County annual report · FIPS 53071
2018 Walla Walla County, WA Power Outage Report
In 2018, customers in Walla Walla County, WA went without power for an average of 3.4 hours, a total of 103K customer-hours (Washington average 2.1 hours). That ranks 8th worst of 27 Washington counties and 1394th of 2,798 nationally.
Compared with WA, the US and 2017
Coverage line is EAGLE-I's share of Washington customers tracked each year.
Biggest outages in Walla Walla County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | July 9, 2018 15:15 | July 10, 2018 06:00 | 14h 45m | 9,125 | 52K |
| 2 | November 27, 2018 21:30 | November 28, 2018 09:30 | 12h | 2,101 | 1,912 |
| 3 | April 28, 2018 01:45 | April 28, 2018 20:45 | 19h | 1,254 | 3,853 |
| 4 | January 16, 2018 18:30 | January 17, 2018 04:45 | 10h 15m | 1,186 | 1,910 |
| 5 | March 28, 2018 23:15 | March 29, 2018 09:30 | 10h 15m | 1,185 | 10K |
| 6 | January 21, 2018 01:00 | January 21, 2018 03:30 | 2h 30m | 1,162 | 937 |
| 7 | January 5, 2018 17:45 | January 6, 2018 00:30 | 6h 45m | 1,026 | 266 |
| 8 | April 15, 2018 16:15 | April 16, 2018 01:00 | 8h 45m | 1,023 | 5,189 |
| 9 | May 9, 2018 03:15 | May 10, 2018 12:00 | 1d 8h | 1,009 | 3,064 |
| 10 | June 19, 2018 22:30 | June 20, 2018 09:30 | 11h | 975 | 2,710 |
Outage episodes by size in 2018: 28 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 2018, 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 | 2018 | 3.2 hrs | 1.62 | 2.0 hrs | 1.25 |
| Inland Power & Light Company | 2018 | 3.3 hrs | 1.55 | 3.3 hrs | 1.55 |
| Columbia Rural Elec Assn, Inc | 2018 | 2.6 hrs | 0.95 | 2.6 hrs | 0.95 |
| 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 71% of Washington's customers in 2018; 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, 2018, 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/2018/washington/walla-walla-county