County annual report · FIPS 19165
2018 Shelby County, IA Power Outage Report
In 2018, customers in Shelby County, IA went without power for an average of 2.7 hours, a total of 20K customer-hours (Iowa average 2.2 hours). That ranks 31st worst of 99 Iowa counties and 1597th of 2,798 nationally.
Compared with IA, the US and 2017
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Shelby County, 2018
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, 2018 15:15 | June 28, 2018 23:45 | 8h 30m | 927 | 1,412 |
| 2 | May 9, 2018 16:00 | May 10, 2018 21:00 | 1d 5h | 413 | 325 |
| 3 | December 26, 2018 14:15 | December 26, 2018 15:15 | 1h | 360 | 360 |
| 4 | April 27, 2018 18:15 | April 30, 2018 13:15 | 2d 19h | 311 | 700 |
| 5 | July 19, 2018 04:45 | July 19, 2018 05:30 | 45m | 308 | 231 |
| 6 | July 25, 2018 12:15 | July 25, 2018 13:00 | 45m | 308 | 231 |
| 7 | August 4, 2018 13:15 | August 5, 2018 16:00 | 1d 2h | 308 | 180 |
| 8 | October 2, 2018 21:15 | October 2, 2018 21:30 | 15m | 308 | 77 |
| 9 | April 21, 2018 22:00 | April 23, 2018 12:45 | 1d 14h | 252 | 802 |
| 10 | April 13, 2018 20:45 | April 17, 2018 19:30 | 3d 22h | 251 | 399 |
Outage episodes by size in 2018: 16 reached 100+ customers, 0 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 2018, 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 | 2018 | 1.9 hrs | 1.18 | 75 min | 0.96 |
| 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 89% of Iowa's customers in 2018; 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, 2018, 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/2018/iowa/shelby-county