County annual report · FIPS 53063
2023 Spokane County, WA Power Outage Report
In 2023, customers in Spokane County, WA went without power for an average of 1.9 hours, a total of 406K customer-hours (Washington average 2.6 hours). That ranks 21st worst of 33 Washington counties and 2342nd 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 Spokane 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 | May 1, 2023 15:30 | May 3, 2023 10:00 | 1d 18h | 9,419 | 4,400 |
| 2 | November 5, 2023 22:15 | November 5, 2023 23:30 | 1h 15m | 5,161 | 2,604 |
| 3 | December 5, 2023 10:45 | December 5, 2023 11:45 | 1h | 3,965 | 2,973 |
| 4 | December 10, 2023 08:00 | December 12, 2023 11:30 | 2d 3h | 3,650 | 28K |
| 5 | April 11, 2023 13:15 | April 12, 2023 01:45 | 12h 30m | 3,640 | 5,843 |
| 6 | May 11, 2023 14:15 | May 12, 2023 08:00 | 17h 45m | 3,203 | 2,457 |
| 7 | June 2, 2023 12:00 | June 3, 2023 01:00 | 13h | 3,173 | 870 |
| 8 | November 13, 2023 16:15 | November 18, 2023 02:30 | 4d 10h | 2,882 | 6,311 |
| 9 | August 18, 2023 13:30 | August 26, 2023 01:00 | 7d 11h | 2,661 | 106K |
| 10 | August 27, 2023 11:00 | September 5, 2023 22:30 | 9d 11h | 2,434 | 19K |
Outage episodes by size in 2023: 149 reached 100+ customers, 37 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 Spokane 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 |
|---|---|---|---|---|---|
| Avista Corp | 2023 | 2.5 hrs | 0.90 | 2.1 hrs | 0.83 |
| Inland Power & Light Company | 2023 | 3.6 hrs | 1.20 | 3.4 hrs | 1.09 |
| Kootenai Electric Cooperative | 2023 | 2.2 hrs | 1.47 | 1.7 hrs | 1.22 |
| City of Cheney - (WA) | 2018 | 3.3 hrs | 0.43 | 44 min | 0.28 |
| Bonneville Power Administration | - | - | - | - | - |
| Avista Corp,avista | - | - | - | - | - |
| Modern Electric Water Company | - | - | - | - | - |
| Vera Irrigation District #15 | - | - | - | - | - |
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 ÷ 217,351 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. Spokane County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Spokane 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/spokane-county