County annual report · FIPS 19003
2018 Adams County, IA Power Outage Report
In 2018, customers in Adams County, IA went without power for an average of 9.5 hours, a total of 18K customer-hours (Iowa average 2.2 hours). That ranks 4th worst of 99 Iowa counties and 580th 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 Adams 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 | August 28, 2018 20:00 | August 30, 2018 20:45 | 2d | 556 | 6,646 |
| 2 | October 20, 2018 15:45 | October 21, 2018 01:45 | 10h | 545 | 3,266 |
| 3 | June 28, 2018 16:15 | June 29, 2018 12:45 | 20h 30m | 302 | 986 |
| 4 | February 17, 2018 00:45 | February 17, 2018 01:45 | 1h | 301 | 301 |
| 5 | January 1, 2018 10:15 | January 1, 2018 12:15 | 2h | 244 | 434 |
| 6 | April 25, 2018 18:15 | April 25, 2018 19:00 | 45m | 237 | 178 |
| 7 | June 30, 2018 22:00 | July 1, 2018 06:00 | 8h | 231 | 793 |
| 8 | June 30, 2018 19:15 | June 30, 2018 21:15 | 2h | 173 | 286 |
| 9 | July 4, 2018 18:30 | July 4, 2018 19:45 | 1h 15m | 162 | 191 |
| 10 | November 2, 2018 11:15 | November 2, 2018 14:45 | 3h 30m | 156 | 546 |
Outage episodes by size in 2018: 12 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 Adams 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 |
| Southwest Iowa Rural Elec Coop | 2018 | 2.4 hrs | 1.69 | 1.6 hrs | 1.21 |
| Interstate Power and Light Co | - | - | - | - | - |
| Alliant Energy (Interstate Power & Light) | - | - | - | - | - |
| City of Corning - (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 ÷ 1,844 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. Adams County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Adams 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/adams-county