County annual report · FIPS 19121
2015 Madison County, IA Power Outage Report
In 2015, customers in Madison County, IA went without power for an average of 0.4 hours, a total of 4,026 customer-hours (Iowa average 1.1 hours). That ranks 78th worst of 99 Iowa counties and 2110th of 2,484 nationally.
Compared with IA, the US
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Madison County, 2015
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 22, 2015 11:45 | September 22, 2015 13:15 | 1h 30m | 355 | 528 |
| 2 | August 23, 2015 04:45 | August 23, 2015 12:30 | 7h 45m | 298 | 608 |
| 3 | November 11, 2015 20:45 | November 12, 2015 03:15 | 6h 30m | 298 | 530 |
| 4 | September 2, 2015 11:15 | September 2, 2015 18:00 | 6h 45m | 157 | 409 |
| 5 | August 9, 2015 05:45 | August 9, 2015 09:15 | 3h 30m | 145 | 508 |
| 6 | October 12, 2015 15:15 | October 12, 2015 19:15 | 4h | 105 | 322 |
| 7 | June 8, 2015 14:15 | June 8, 2015 15:15 | 1h | 99 | 57 |
| 8 | October 8, 2015 15:00 | October 8, 2015 19:15 | 4h 15m | 81 | 166 |
| 9 | January 29, 2015 19:00 | January 29, 2015 19:45 | 45m | 62 | 47 |
| 10 | August 23, 2015 00:45 | August 23, 2015 03:30 | 2h 45m | 36 | 67 |
Outage episodes by size in 2015: 6 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 Madison County reported on EIA Form 861 for 2015, 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 | 2015 | 2.2 hrs | 1.05 | 87 min | 0.88 |
| Farmers Electric Coop, Inc - (IA) | 2015 | 54 min | 0.75 | 54 min | 0.75 |
| 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 n/a of Iowa's customers in 2015; 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, 2015, 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/2015/iowa/madison-county