County annual report · FIPS 19121
2018 Madison County, IA Power Outage Report
In 2018, customers in Madison County, IA went without power for an average of 1.6 hours, a total of 15K customer-hours (Iowa average 2.2 hours). That ranks 66th worst of 99 Iowa counties and 2035th 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 Madison 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 24, 2018 20:15 | June 25, 2018 04:30 | 8h 15m | 1,078 | 2,013 |
| 2 | June 28, 2018 17:00 | July 2, 2018 12:30 | 3d 19h | 815 | 8,765 |
| 3 | September 8, 2018 08:30 | September 8, 2018 11:45 | 3h 15m | 323 | 485 |
| 4 | May 3, 2018 05:15 | May 3, 2018 15:30 | 10h 15m | 235 | 682 |
| 5 | April 9, 2018 13:15 | April 9, 2018 15:30 | 2h 15m | 140 | 159 |
| 6 | May 3, 2018 01:00 | May 3, 2018 03:30 | 2h 30m | 116 | 117 |
| 7 | June 11, 2018 04:30 | June 11, 2018 08:00 | 3h 30m | 105 | 287 |
| 8 | September 3, 2018 07:15 | September 3, 2018 08:15 | 1h | 84 | 84 |
| 9 | September 10, 2018 13:30 | September 10, 2018 20:30 | 7h | 84 | 152 |
| 10 | August 1, 2018 23:45 | August 2, 2018 03:00 | 3h 15m | 76 | 191 |
Outage episodes by size in 2018: 7 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 Madison 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 |
| Farmers Electric Coop, Inc - (IA) | 2018 | 5.9 hrs | 1.44 | 2.1 hrs | 1.26 |
| Interstate Power and Light Co | - | - | - | - | - |
| Waverly Municipal Elec Utility | - | - | - | - | - |
| Clarke Electric Coop Inc - (IA) | - | - | - | - | - |
| City of Winterset - (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 ÷ 9,366 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. Madison County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Madison 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/madison-county