County annual report · FIPS 53063
2015 Spokane County, WA Power Outage Report
In 2015, customers in Spokane County, WA went without power for an average of 51.4 hours, a total of 11.2M customer-hours (Washington average 9.1 hours). That ranks 1st worst of 23 Washington counties and 44th of 2,484 nationally.
Compared with WA, the US
Coverage line is EAGLE-I's share of Washington customers tracked each year.
Biggest outages in Spokane County, 2015
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | November 17, 2015 17:45 | November 18, 2015 15:00 | 21h 15m | 251,333 | 1.7M |
| 2 | November 18, 2015 15:45 | December 1, 2015 09:45 | 12d 18h | 224,158 | 9.1M |
| 3 | September 30, 2015 12:15 | October 1, 2015 02:30 | 14h 15m | 23,282 | 20K |
| 4 | August 30, 2015 14:00 | September 1, 2015 21:00 | 2d 7h | 13,917 | 38K |
| 5 | September 30, 2015 05:45 | September 30, 2015 11:15 | 5h 30m | 13,821 | 3,460 |
| 6 | December 28, 2015 12:15 | December 29, 2015 10:15 | 22h | 12,371 | 19K |
| 7 | May 17, 2015 21:45 | May 18, 2015 06:30 | 8h 45m | 5,218 | 4,722 |
| 8 | October 2, 2015 14:00 | October 2, 2015 21:00 | 7h | 4,954 | 1,975 |
| 9 | December 8, 2015 13:15 | December 10, 2015 04:15 | 1d 15h | 3,872 | 6,742 |
| 10 | June 8, 2015 11:30 | June 9, 2015 07:45 | 20h 15m | 3,584 | 2,089 |
Outage episodes by size in 2015: 123 reached 100+ customers, 36 reached 1,000+ customers, 6 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 2015, 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 |
|---|---|---|---|---|---|
| Inland Power & Light Company | 2015 | 115.7 hrs | 6.15 | 4.2 hrs | 1.41 |
| City of Cheney - (WA) | 2015 | 24.6 hrs | 2.90 | 27 min | 0.20 |
| Bonneville Power Administration | - | - | - | - | - |
| Avista Corp | - | - | - | - | - |
| Avista Corp,avista | - | - | - | - | - |
| Kootenai Electric Cooperative | - | - | - | - | - |
| 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 2015; 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, 2015, 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/2015/washington/spokane-county