County annual report · FIPS 53063
2018 Spokane County, WA Power Outage Report
In 2018, customers in Spokane County, WA went without power for an average of 0.7 hours, a total of 157K customer-hours (Washington average 2.1 hours). That ranks 17th worst of 27 Washington counties and 2428th 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 Spokane 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 | August 25, 2018 16:45 | August 26, 2018 06:00 | 13h 15m | 6,606 | 12K |
| 2 | September 13, 2018 16:00 | September 14, 2018 03:30 | 11h 30m | 3,714 | 5,221 |
| 3 | June 18, 2018 14:00 | June 19, 2018 01:45 | 11h 45m | 3,383 | 2,496 |
| 4 | March 26, 2018 16:15 | March 27, 2018 02:00 | 9h 45m | 3,047 | 1,255 |
| 5 | December 26, 2018 16:45 | December 26, 2018 19:45 | 3h | 2,891 | 746 |
| 6 | February 8, 2018 15:45 | February 9, 2018 05:30 | 13h 45m | 2,885 | 1,589 |
| 7 | August 28, 2018 15:15 | August 29, 2018 08:15 | 17h | 2,875 | 871 |
| 8 | October 29, 2018 16:30 | October 30, 2018 04:45 | 12h 15m | 2,545 | 755 |
| 9 | December 11, 2018 08:00 | December 11, 2018 09:15 | 1h 15m | 2,402 | 2,991 |
| 10 | June 16, 2018 13:30 | June 17, 2018 02:00 | 12h 30m | 2,194 | 3,314 |
Outage episodes by size in 2018: 97 reached 100+ customers, 18 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 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 |
|---|---|---|---|---|---|
| Avista Corp | 2018 | 2.6 hrs | 0.89 | 2.2 hrs | 0.81 |
| Inland Power & Light Company | 2018 | 3.3 hrs | 1.55 | 3.3 hrs | 1.55 |
| Kootenai Electric Cooperative | 2018 | 3.4 hrs | 1.20 | 3.4 hrs | 1.20 |
| 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 71% of Washington's customers in 2018; 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, 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/spokane-county