County annual report · FIPS 53025
2018 Grant County, WA Power Outage Report
In 2018, customers in Grant County, WA went without power for an average of 0.0 hours, a total of 25 customer-hours (Washington average 2.1 hours). That ranks 24th worst of 27 Washington counties and 2786th 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 Grant County, 2018
The 2 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | April 16, 2018 23:00 | April 17, 2018 01:15 | 2h 15m | 4 | 9 |
| 2 | May 7, 2018 03:00 | May 7, 2018 07:00 | 4h | 4 | 16 |
Outage episodes by size in 2018: 0 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 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 |
| 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 71% of Washington's customers in 2018; 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, 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/grant-county