County annual report · FIPS 53065
2018 Stevens County, WA Power Outage Report
In 2018, customers in Stevens County, WA went without power for an average of 8.6 hours, a total of 263K customer-hours (Washington average 2.1 hours). That ranks 3rd worst of 27 Washington counties and 657th 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 Stevens 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 | April 30, 2018 15:00 | April 30, 2018 21:15 | 6h 15m | 5,402 | 7,016 |
| 2 | September 9, 2018 07:00 | September 9, 2018 10:15 | 3h 15m | 5,378 | 17K |
| 3 | January 24, 2018 05:00 | January 25, 2018 14:30 | 1d 9h | 3,824 | 48K |
| 4 | October 2, 2018 22:00 | October 3, 2018 18:00 | 20h | 3,337 | 18K |
| 5 | November 11, 2018 08:00 | November 11, 2018 11:45 | 3h 45m | 3,033 | 11K |
| 6 | July 29, 2018 13:30 | July 29, 2018 20:00 | 6h 30m | 2,218 | 9,987 |
| 7 | April 20, 2018 06:15 | April 20, 2018 10:00 | 3h 45m | 2,210 | 8,288 |
| 8 | February 28, 2018 17:15 | February 28, 2018 19:45 | 2h 30m | 1,684 | 902 |
| 9 | October 5, 2018 06:15 | October 5, 2018 12:15 | 6h | 1,656 | 9,690 |
| 10 | June 16, 2018 20:45 | June 17, 2018 10:45 | 14h | 1,615 | 3,704 |
Outage episodes by size in 2018: 114 reached 100+ customers, 17 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 Stevens 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 |
| Bonneville Power Administration | - | - | - | - | - |
| Avista Corp,avista | - | - | - | - | - |
| City of Chewelah | - | - | - | - | - |
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 ÷ 30,671 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. Stevens County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Stevens 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/stevens-county