County annual report · FIPS 53025
2023 Grant County, WA Power Outage Report
In 2023, customers in Grant County, WA went without power for an average of 0.1 hours, a total of 4,926 customer-hours (Washington average 2.6 hours). That ranks 33rd worst of 33 Washington counties and 2919th of 2,977 nationally.
Compared with WA, the US and 2022
Coverage line is EAGLE-I's share of Washington customers tracked each year.
Biggest outages in Grant County, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | September 27, 2023 15:15 | September 27, 2023 18:00 | 2h 45m | 246 | 286 |
| 2 | July 10, 2023 06:45 | July 10, 2023 08:15 | 1h 30m | 143 | 215 |
| 3 | July 11, 2023 19:15 | July 11, 2023 19:30 | 15m | 143 | 36 |
| 4 | October 17, 2023 17:00 | October 18, 2023 02:45 | 9h 45m | 143 | 923 |
| 5 | August 29, 2023 14:00 | August 29, 2023 19:45 | 5h 45m | 129 | 736 |
| 6 | June 5, 2023 00:00 | June 5, 2023 03:15 | 3h 15m | 128 | 393 |
| 7 | January 10, 2023 04:00 | January 10, 2023 08:15 | 4h 15m | 125 | 475 |
| 8 | July 31, 2023 17:15 | July 31, 2023 17:30 | 15m | 105 | 26 |
| 9 | August 7, 2023 16:15 | August 8, 2023 04:30 | 12h 15m | 100 | 291 |
| 10 | March 22, 2023 18:45 | March 22, 2023 19:00 | 15m | 96 | 24 |
Outage episodes by size in 2023: 9 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 2023, 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 | 2023 | 2.5 hrs | 0.90 | 2.1 hrs | 0.83 |
| Big Bend Electric Coop, Inc | 2023 | 5.3 hrs | 1.13 | 3.8 hrs | 1.01 |
| Bonneville Power Administration | - | - | - | - | - |
| 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 n/a of Washington's customers in 2023; 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, 2023, 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/2023/washington/grant-county