County annual report · FIPS 19049
2023 Dallas County, IA Power Outage Report
In 2023, customers in Dallas County, IA went without power for an average of 0.7 hours, a total of 40K customer-hours (Iowa average 2.0 hours). That ranks 94th worst of 99 Iowa counties and 2776th of 2,977 nationally.
Compared with IA, the US and 2022
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Dallas County, 2023
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, 2023 14:45 | June 25, 2023 20:15 | 5h 30m | 3,388 | 6,865 |
| 2 | August 8, 2023 21:30 | August 9, 2023 10:15 | 12h 45m | 3,069 | 3,317 |
| 3 | July 11, 2023 07:45 | July 11, 2023 08:00 | 15m | 2,225 | 556 |
| 4 | November 19, 2023 13:45 | November 19, 2023 18:45 | 5h | 2,171 | 3,147 |
| 5 | December 8, 2023 20:45 | December 9, 2023 00:45 | 4h | 1,739 | 2,058 |
| 6 | October 17, 2023 20:15 | October 18, 2023 00:45 | 4h 30m | 1,496 | 1,136 |
| 7 | July 12, 2023 10:45 | July 12, 2023 18:15 | 7h 30m | 1,147 | 1,822 |
| 8 | October 21, 2023 15:45 | October 21, 2023 16:00 | 15m | 1,073 | 268 |
| 9 | July 10, 2023 13:30 | July 10, 2023 18:00 | 4h 30m | 1,042 | 629 |
| 10 | July 22, 2023 08:00 | July 22, 2023 11:45 | 3h 45m | 934 | 484 |
Outage episodes by size in 2023: 39 reached 100+ customers, 9 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 Dallas County reported on EIA Form 861 for 2023, 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 | 2023 | 2.8 hrs | 1.13 | 78 min | 0.83 |
| Interstate Power and Light Co | - | - | - | - | - |
| Alliant Energy (Interstate Power & Light) | - | - | - | - | - |
| Midland Power Coop | - | - | - | - | - |
| Waverly Municipal Elec Utility | - | - | - | - | - |
| Guthrie County Rural E C A | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about n/a of Iowa's customers in 2023; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 58,451 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. Dallas County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Dallas County, IA annual power outage report, 2023, 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/2023/iowa/dallas-county