County annual report · FIPS 19049
2016 Dallas County, IA Power Outage Report
In 2016, customers in Dallas County, IA went without power for an average of 1.0 hours, a total of 60K customer-hours (Iowa average 1.8 hours). That ranks 76th worst of 99 Iowa counties and 1768th of 2,391 nationally.
Compared with IA, the US and 2015
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Dallas County, 2016
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | September 13, 2016 08:15 | September 13, 2016 23:45 | 15h 30m | 3,831 | 2,301 |
| 2 | July 19, 2016 13:15 | July 19, 2016 23:15 | 10h | 3,729 | 5,850 |
| 3 | August 20, 2016 09:30 | August 22, 2016 18:15 | 2d 8h | 2,838 | 2,979 |
| 4 | May 31, 2016 16:30 | May 31, 2016 18:45 | 2h 15m | 2,161 | 1,180 |
| 5 | April 8, 2016 18:15 | April 8, 2016 22:00 | 3h 45m | 2,150 | 1,901 |
| 6 | October 23, 2016 03:45 | October 23, 2016 06:15 | 2h 30m | 1,965 | 3,423 |
| 7 | August 11, 2016 23:30 | August 12, 2016 12:15 | 12h 45m | 1,897 | 11K |
| 8 | April 23, 2016 12:00 | April 23, 2016 15:00 | 3h | 1,425 | 2,380 |
| 9 | October 5, 2016 13:15 | October 6, 2016 01:45 | 12h 30m | 1,296 | 1,030 |
| 10 | October 5, 2016 05:45 | October 5, 2016 07:30 | 1h 45m | 989 | 511 |
Outage episodes by size in 2016: 53 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 2016, 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 | 2016 | 3.6 hrs | 1.64 | 83 min | 0.90 |
| 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 2016; 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, 2016, 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/2016/iowa/dallas-county