County annual report · FIPS 19165
2023 Shelby County, IA Power Outage Report
In 2023, customers in Shelby County, IA went without power for an average of 1.4 hours, a total of 9,824 customer-hours (Iowa average 2.0 hours). That ranks 59th worst of 99 Iowa counties and 2534th 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 Shelby 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 | October 19, 2023 14:00 | October 20, 2023 21:15 | 1d 7h | 1,540 | 2,287 |
| 2 | November 2, 2023 04:45 | November 2, 2023 08:00 | 3h 15m | 535 | 1,093 |
| 3 | July 13, 2023 13:30 | July 13, 2023 14:30 | 1h | 390 | 293 |
| 4 | January 19, 2023 15:00 | January 20, 2023 15:00 | 1d | 251 | 787 |
| 5 | June 18, 2023 19:45 | June 18, 2023 20:45 | 1h | 205 | 205 |
| 6 | July 8, 2023 03:45 | July 13, 2023 02:45 | 4d 23h | 154 | 696 |
| 7 | August 9, 2023 10:00 | August 9, 2023 12:00 | 2h | 133 | 183 |
| 8 | September 11, 2023 13:00 | September 11, 2023 13:45 | 45m | 133 | 100 |
| 9 | October 2, 2023 14:15 | October 2, 2023 17:00 | 2h 45m | 133 | 204 |
| 10 | July 14, 2023 22:30 | July 15, 2023 00:30 | 2h | 118 | 236 |
Outage episodes by size in 2023: 11 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 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 |
| 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 2023; 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, 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/shelby-county