County annual report · FIPS 19183
2021 Washington County, IA Power Outage Report
In 2021, customers in Washington County, IA went without power for an average of 3.9 hours, a total of 38K customer-hours (Iowa average 2.7 hours). That ranks 37th worst of 99 Iowa counties and 1573rd of 2,974 nationally.
Compared with IA, the US and 2020
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Washington 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 | December 16, 2021 02:30 | December 17, 2021 02:30 | 1d | 3,147 | 13K |
| 2 | August 2, 2021 13:00 | August 2, 2021 16:15 | 3h 15m | 1,874 | 1,388 |
| 3 | July 16, 2021 16:45 | July 26, 2021 23:00 | 10d 6h | 1,129 | 2,278 |
| 4 | April 22, 2021 14:45 | April 23, 2021 10:15 | 19h 30m | 1,062 | 7,202 |
| 5 | December 3, 2021 05:30 | December 3, 2021 07:30 | 2h | 783 | 1,566 |
| 6 | July 7, 2021 10:00 | July 7, 2021 15:45 | 5h 45m | 705 | 2,528 |
| 7 | February 5, 2021 12:45 | February 6, 2021 05:15 | 16h 30m | 431 | 575 |
| 8 | September 21, 2021 00:45 | September 21, 2021 05:45 | 5h | 371 | 625 |
| 9 | January 7, 2021 19:45 | January 7, 2021 21:00 | 1h 15m | 324 | 405 |
| 10 | November 9, 2021 13:15 | November 9, 2021 16:00 | 2h 45m | 302 | 438 |
Outage episodes by size in 2021: 22 reached 100+ customers, 4 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 Washington 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 |
|---|---|---|---|---|---|
| MidAmerican Energy Co | 2021 | 1.9 hrs | 1.04 | 75 min | 0.74 |
| Eastern Iowa Light & Power Coop | 2021 | 2.1 hrs | 1.31 | 1.8 hrs | 1.22 |
| T I P Rural Electric Coop | 2018 | 2.5 hrs | 1.33 | 2.5 hrs | 1.33 |
| Farmers Electric Coop - (IA) | 2018 | 77 min | 2.30 | 77 min | 2.30 |
| Interstate Power and Light Co | - | - | - | - | - |
| Alliant Energy (Interstate Power & Light) | - | - | - | - | - |
| Access Energy Coop | - | - | - | - | - |
| Waverly Municipal Elec Utility | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 91% of Iowa's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 9,700 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. Washington County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Washington County, IA 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/iowa/washington-county