County annual report · FIPS 53075
2015 Whitman County, WA Power Outage Report
In 2015, customers in Whitman County, WA went without power for an average of 6.1 hours, a total of 288K customer-hours (Washington average 9.1 hours). That ranks 10th worst of 23 Washington counties and 457th 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 Whitman 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 18:45 | November 18, 2015 15:00 | 20h 15m | 16,959 | 93K |
| 2 | November 18, 2015 15:45 | November 22, 2015 03:00 | 3d 11h | 10,878 | 111K |
| 3 | June 8, 2015 11:30 | June 8, 2015 14:00 | 2h 30m | 3,211 | 4,863 |
| 4 | September 5, 2015 11:30 | September 6, 2015 23:00 | 1d 11h | 2,466 | 15K |
| 5 | September 8, 2015 20:30 | September 8, 2015 20:45 | 15m | 1,796 | 449 |
| 6 | October 21, 2015 22:00 | October 21, 2015 23:30 | 1h 30m | 1,541 | 1,790 |
| 7 | May 21, 2015 23:45 | May 22, 2015 03:30 | 3h 45m | 1,003 | 274 |
| 8 | October 26, 2015 11:15 | October 26, 2015 12:45 | 1h 30m | 999 | 1,242 |
| 9 | May 14, 2015 14:15 | May 15, 2015 00:15 | 10h | 995 | 4,825 |
| 10 | August 12, 2015 18:00 | August 13, 2015 10:30 | 16h 30m | 925 | 3,818 |
Outage episodes by size in 2015: 56 reached 100+ customers, 7 reached 1,000+ customers, 2 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 Whitman 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 |
| Clearwater Power Company | 2015 | 21.7 hrs | 3.33 | 21.7 hrs | 3.33 |
| Avista Corp | - | - | - | - | - |
| Avista Corp,avista | - | - | - | - | - |
| Big Bend Electric Coop, Inc | - | - | - | - | - |
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 ÷ 47,409 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. Whitman County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Whitman 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/whitman-county