County annual report · FIPS 19171
2019 Tama County, IA Power Outage Report
In 2019, customers in Tama County, IA went without power for an average of 2.1 hours, a total of 17K customer-hours (Iowa average 2.2 hours). That ranks 57th worst of 99 Iowa counties and 1999th of 2,945 nationally.
Compared with IA, the US and 2018
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Tama County, 2019
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 28, 2019 13:30 | June 28, 2019 22:45 | 9h 15m | 1,351 | 4,867 |
| 2 | November 28, 2019 17:15 | November 28, 2019 18:45 | 1h 30m | 1,198 | 1,797 |
| 3 | June 15, 2019 22:45 | June 16, 2019 18:00 | 19h 15m | 796 | 2,426 |
| 4 | May 28, 2019 21:15 | May 28, 2019 23:30 | 2h 15m | 785 | 809 |
| 5 | April 11, 2019 13:30 | April 11, 2019 23:30 | 10h | 328 | 905 |
| 6 | August 20, 2019 21:30 | August 21, 2019 00:15 | 2h 45m | 296 | 814 |
| 7 | June 6, 2019 05:15 | June 6, 2019 08:45 | 3h 30m | 275 | 269 |
| 8 | August 19, 2019 20:00 | August 20, 2019 16:00 | 20h | 221 | 757 |
| 9 | August 7, 2019 20:45 | August 7, 2019 22:15 | 1h 30m | 188 | 235 |
| 10 | January 4, 2019 07:30 | January 4, 2019 09:15 | 1h 45m | 184 | 321 |
Outage episodes by size in 2019: 16 reached 100+ customers, 2 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 2019, 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 |
|---|---|---|---|---|---|
| T I P Rural Electric Coop | 2018 | 2.5 hrs | 1.33 | 2.5 hrs | 1.33 |
| Consumers Energy Coop - (IA) | 2018 | 2.4 hrs | 1.61 | 1.6 hrs | 1.35 |
| Interstate Power and Light Co | - | - | - | - | - |
| Alliant Energy (Interstate Power & Light) | - | - | - | - | - |
| East-Central Iowa Rural Elec Coop | - | - | - | - | - |
| 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 89% of Iowa's customers in 2019; 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, 2019, 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/2019/iowa/tama-county