County annual report · FIPS 19171
2022 Tama County, IA Power Outage Report
In 2022, customers in Tama County, IA went without power for an average of 3.6 hours, a total of 29K customer-hours (Iowa average 1.6 hours). That ranks 18th worst of 99 Iowa counties and 1765th of 2,976 nationally.
Compared with IA, the US and 2021
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Tama County, 2022
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | June 25, 2022 05:45 | June 25, 2022 08:15 | 2h 30m | 3,236 | 4,250 |
| 2 | September 18, 2022 05:30 | September 18, 2022 08:15 | 2h 45m | 3,147 | 6,231 |
| 3 | December 5, 2022 15:00 | December 14, 2022 14:00 | 8d 23h | 1,192 | 2,656 |
| 4 | August 28, 2022 19:15 | August 28, 2022 22:15 | 3h | 1,187 | 3,558 |
| 5 | March 6, 2022 01:00 | March 6, 2022 04:45 | 3h 45m | 1,033 | 2,642 |
| 6 | October 7, 2022 13:15 | October 11, 2022 14:00 | 4d | 627 | 1,872 |
| 7 | May 17, 2022 14:00 | May 17, 2022 17:00 | 3h | 382 | 502 |
| 8 | October 25, 2022 14:15 | October 26, 2022 20:30 | 1d 6h | 313 | 660 |
| 9 | February 18, 2022 18:45 | February 18, 2022 23:45 | 5h | 284 | 1,138 |
| 10 | July 23, 2022 21:15 | July 24, 2022 09:45 | 12h 30m | 180 | 595 |
Outage episodes by size in 2022: 15 reached 100+ customers, 5 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 Tama County reported on EIA Form 861 for 2022, 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 |
|---|---|---|---|---|---|
| East-Central Iowa Rural Elec Coop | 2022 | 57 min | 0.90 | 57 min | 0.90 |
| T I P Rural Electric Coop | 2018 | 2.5 hrs | 1.33 | 2.5 hrs | 1.33 |
| Consumers Energy Coop - (IA) | 2022 | 64 min | 0.71 | 64 min | 0.71 |
| Interstate Power and Light Co | - | - | - | - | - |
| Alliant Energy (Interstate Power & Light) | - | - | - | - | - |
| Grundy County Rural Elec Coop | - | - | - | - | - |
| City of Traer - (IA) | - | - | - | - | - |
| City of Dysart - (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 2022; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 8,169 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. Tama County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Tama County, IA annual power outage report, 2022, 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/2022/iowa/tama-county