County annual report · FIPS 19123
2020 Mahaska County, IA Power Outage Report
In 2020, customers in Mahaska County, IA went without power for an average of 2.5 hours, a total of 20K customer-hours (Iowa average 27.4 hours). That ranks 47th worst of 99 Iowa counties and 2054th of 3,019 nationally.
Compared with IA, the US and 2019
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Mahaska County, 2020
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | August 10, 2020 17:15 | August 13, 2020 07:30 | 2d 14h | 2,507 | 8,145 |
| 2 | June 20, 2020 11:30 | June 20, 2020 14:00 | 2h 30m | 1,993 | 1,993 |
| 3 | August 29, 2020 18:45 | August 30, 2020 03:30 | 8h 45m | 1,547 | 427 |
| 4 | March 20, 2020 01:00 | March 20, 2020 05:00 | 4h | 1,354 | 870 |
| 5 | March 29, 2020 18:00 | March 29, 2020 19:00 | 1h | 1,022 | 1,022 |
| 6 | April 22, 2020 16:15 | April 22, 2020 17:15 | 1h | 1,022 | 1,022 |
| 7 | February 4, 2020 13:30 | February 4, 2020 14:45 | 1h 15m | 512 | 384 |
| 8 | January 18, 2020 20:30 | January 19, 2020 02:00 | 5h 30m | 317 | 890 |
| 9 | May 26, 2020 21:45 | May 27, 2020 02:15 | 4h 30m | 317 | 915 |
| 10 | January 18, 2020 13:15 | January 18, 2020 16:45 | 3h 30m | 316 | 289 |
Outage episodes by size in 2020: 14 reached 100+ customers, 6 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 Mahaska County reported on EIA Form 861 for 2020, 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 | 2020 | 18.3 hrs | 1.43 | 82 min | 0.79 |
| T I P Rural Electric Coop | 2018 | 2.5 hrs | 1.33 | 2.5 hrs | 1.33 |
| Interstate Power and Light Co | - | - | - | - | - |
| Pella Cooperative Elec Assn | - | - | - | - | - |
| City of Pella - (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 2020; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 8,162 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. Mahaska County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Mahaska County, IA annual power outage report, 2020, 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/2020/iowa/mahaska-county