County annual report · FIPS 53025
2021 Grant County, WA Power Outage Report
In 2021, customers in Grant County, WA went without power for an average of 0.1 hours, a total of 3,535 customer-hours (Washington average 8.7 hours). That ranks 32nd worst of 33 Washington counties and 2930th 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 Grant 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 08:30 | August 18, 2021 17:00 | 8h 30m | 608 | 1,030 |
| 2 | September 11, 2021 04:00 | September 11, 2021 23:45 | 19h 45m | 189 | 592 |
| 3 | December 20, 2021 21:45 | December 20, 2021 22:30 | 45m | 140 | 71 |
| 4 | October 19, 2021 17:15 | October 19, 2021 18:00 | 45m | 138 | 70 |
| 5 | May 27, 2021 20:45 | May 27, 2021 21:30 | 45m | 137 | 103 |
| 6 | September 23, 2021 22:30 | September 23, 2021 23:30 | 1h | 137 | 137 |
| 7 | October 29, 2021 16:30 | October 29, 2021 19:00 | 2h 30m | 137 | 107 |
| 8 | November 2, 2021 21:00 | November 2, 2021 23:45 | 2h 45m | 137 | 118 |
| 9 | October 12, 2021 13:15 | October 12, 2021 16:30 | 3h 15m | 56 | 167 |
| 10 | August 15, 2021 13:30 | August 15, 2021 16:45 | 3h 15m | 51 | 114 |
Outage episodes by size in 2021: 8 reached 100+ customers, 0 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 Grant 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 |
| Bonneville Power Administration | - | - | - | - | - |
| Big Bend Electric Coop, Inc | - | - | - | - | - |
| PUD No 2 of Grant County | - | - | - | - | - |
| City of Coulee Dam - (WA) | - | - | - | - | - |
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 ÷ 50,667 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. Grant County has data for 2016–2025.
Cite this report
MassOutage (massoutage.com), Grant 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/grant-county