County annual report · FIPS 53001
2021 Adams County, WA Power Outage Report
In 2021, customers in Adams County, WA went without power for an average of 1.4 hours, a total of 22K customer-hours (Washington average 8.7 hours). That ranks 27th worst of 33 Washington counties and 2487th of 2,974 nationally.
Compared with WA, the US and 2020
Coverage line is EAGLE-I's share of Washington customers tracked each year.
Biggest outages in Adams County, 2021
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 18, 2021 03:30 | August 19, 2021 03:15 | 23h 45m | 2,054 | 4,553 |
| 2 | March 31, 2021 04:30 | March 31, 2021 06:00 | 1h 30m | 1,618 | 487 |
| 3 | September 11, 2021 00:00 | September 12, 2021 10:00 | 1d 10h | 653 | 3,040 |
| 4 | May 27, 2021 19:30 | May 28, 2021 08:45 | 13h 15m | 499 | 617 |
| 5 | December 20, 2021 21:45 | December 21, 2021 03:30 | 5h 45m | 476 | 262 |
| 6 | September 28, 2021 07:00 | September 28, 2021 11:15 | 4h 15m | 475 | 1,312 |
| 7 | September 23, 2021 22:30 | September 24, 2021 00:30 | 2h | 453 | 457 |
| 8 | October 19, 2021 15:00 | October 20, 2021 00:00 | 9h | 452 | 320 |
| 9 | October 29, 2021 16:30 | October 29, 2021 19:00 | 2h 30m | 452 | 359 |
| 10 | November 2, 2021 21:00 | November 2, 2021 23:45 | 2h 45m | 452 | 398 |
Outage episodes by size in 2021: 19 reached 100+ customers, 2 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 Adams County reported on EIA Form 861 for 2021, 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 | 2021 | 16.1 hrs | 2.31 | 2.9 hrs | 1.29 |
| Inland Power & Light Company | 2021 | 11.9 hrs | 1.85 | 3.4 hrs | 1.24 |
| Bonneville Power Administration | - | - | - | - | - |
| Avista Corp,avista | - | - | - | - | - |
| Big Bend Electric Coop, Inc | - | - | - | - | - |
| PUD No 2 of Grant County | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 87% of Washington's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 14,910 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. Adams County has data for 2015–2017, 2019–2025.
Cite this report
MassOutage (massoutage.com), Adams County, WA annual power outage report, 2021, 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/2021/washington/adams-county