County annual report · FIPS 19165
2024 Shelby County, IA Power Outage Report
In 2024, customers in Shelby County, IA went without power for an average of 5.4 hours, a total of 39K customer-hours (Iowa average 3.2 hours). That ranks 23rd worst of 99 Iowa counties and 1516th of 2,990 nationally.
Compared with IA, the US and 2023
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Shelby County, 2024
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | April 26, 2024 23:00 | April 30, 2024 22:30 | 3d 23h | 1,046 | 7,012 |
| 2 | May 24, 2024 09:15 | May 25, 2024 01:00 | 15h 45m | 957 | 5,632 |
| 3 | March 8, 2024 04:30 | March 8, 2024 12:30 | 8h | 932 | 1,071 |
| 4 | May 4, 2024 08:30 | May 4, 2024 14:15 | 5h 45m | 930 | 3,612 |
| 5 | May 7, 2024 02:45 | May 7, 2024 18:30 | 15h 45m | 639 | 2,620 |
| 6 | November 16, 2024 10:30 | November 16, 2024 23:15 | 12h 45m | 555 | 626 |
| 7 | June 25, 2024 12:45 | June 25, 2024 22:45 | 10h | 538 | 352 |
| 8 | May 21, 2024 02:15 | May 22, 2024 16:45 | 1d 14h | 394 | 1,442 |
| 9 | November 25, 2024 22:15 | November 25, 2024 23:00 | 45m | 391 | 293 |
| 10 | September 19, 2024 07:45 | September 19, 2024 17:00 | 9h 15m | 390 | 1,451 |
Outage episodes by size in 2024: 20 reached 100+ customers, 1 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 Shelby County reported on EIA Form 861 for 2024, 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 | 2024 | 5.5 hrs | 1.42 | 1.7 hrs | 0.94 |
| Western Iowa Power Coop | 2018 | 47 min | 0.76 | 47 min | 0.76 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| Nishnabotna Valley R E C | - | - | - | - | - |
| Harrison County Rrl Elec Coop | - | - | - | - | - |
| Atlantic Municipal Utilities | - | - | - | - | - |
| City of Shelby - (IA) | - | - | - | - | - |
| Harlan Municipal Utilities - (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 n/a of Iowa's customers in 2024; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 7,164 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. Shelby County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Shelby County, IA annual power outage report, 2024, 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/2024/iowa/shelby-county