County annual report · FIPS 19175
2021 Union County, IA Power Outage Report
In 2021, customers in Union County, IA went without power for an average of 2.7 hours, a total of 18K customer-hours (Iowa average 2.7 hours). That ranks 51st worst of 99 Iowa counties and 1959th 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 Union 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 | January 4, 2021 08:30 | January 4, 2021 10:15 | 1h 45m | 946 | 1,184 |
| 2 | December 15, 2021 23:15 | December 16, 2021 19:00 | 19h 45m | 541 | 1,696 |
| 3 | July 11, 2021 16:00 | July 12, 2021 21:15 | 1d 5h | 336 | 6,784 |
| 4 | August 3, 2021 11:30 | August 3, 2021 14:15 | 2h 45m | 335 | 594 |
| 5 | May 14, 2021 03:15 | May 14, 2021 11:15 | 8h | 245 | 1,953 |
| 6 | May 21, 2021 05:00 | May 21, 2021 09:30 | 4h 30m | 245 | 1,103 |
| 7 | June 17, 2021 05:00 | June 17, 2021 14:00 | 9h | 178 | 324 |
| 8 | May 21, 2021 15:45 | May 21, 2021 16:15 | 30m | 160 | 80 |
| 9 | September 24, 2021 15:15 | September 24, 2021 15:45 | 30m | 159 | 80 |
| 10 | November 1, 2021 17:30 | November 1, 2021 18:30 | 1h | 141 | 140 |
Outage episodes by size in 2021: 15 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 Union 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 |
|---|---|---|---|---|---|
| Southwest Iowa Rural Elec Coop | 2018 | 2.4 hrs | 1.69 | 1.6 hrs | 1.21 |
| Farmers Electric Coop, Inc - (IA) | 2018 | 5.9 hrs | 1.44 | 2.1 hrs | 1.26 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| Interstate Power and Light Co | - | - | - | - | - |
| Alliant Energy (Interstate Power & Light) | - | - | - | - | - |
| Clarke Electric Coop Inc - (IA) | - | - | - | - | - |
| City of Afton- (IA) | - | - | - | - | - |
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 ÷ 6,645 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. Union County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Union 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/union-county