County annual report · FIPS 29123
2021 Madison County, MO Power Outage Report
In 2021, customers in Madison County, MO went without power for an average of 10.1 hours, a total of 87K customer-hours (Missouri average 4.5 hours). That ranks 18th worst of 115 Missouri counties and 772nd of 2,974 nationally.
Compared with MO, the US and 2020
Coverage line is EAGLE-I's share of Missouri customers tracked each year.
Biggest outages in Madison County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | October 25, 2021 01:45 | October 29, 2021 17:15 | 4d 15h | 4,201 | 64K |
| 2 | March 21, 2021 19:15 | March 21, 2021 21:00 | 1h 45m | 774 | 1,258 |
| 3 | June 11, 2021 21:30 | June 12, 2021 02:00 | 4h 30m | 767 | 643 |
| 4 | November 30, 2021 22:15 | November 30, 2021 22:45 | 30m | 739 | 188 |
| 5 | August 7, 2021 12:45 | August 7, 2021 15:00 | 2h 15m | 685 | 357 |
| 6 | November 25, 2021 07:45 | November 25, 2021 10:15 | 2h 30m | 669 | 1,506 |
| 7 | April 10, 2021 18:15 | April 10, 2021 20:45 | 2h 30m | 585 | 860 |
| 8 | February 13, 2021 20:00 | February 13, 2021 20:45 | 45m | 575 | 163 |
| 9 | March 12, 2021 10:00 | March 12, 2021 12:00 | 2h | 567 | 1,134 |
| 10 | August 9, 2021 18:30 | August 9, 2021 20:15 | 1h 45m | 444 | 117 |
Outage episodes by size in 2021: 32 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 2021, 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 |
|---|---|---|---|---|---|
| Union Electric Co - (MO) | 2021 | 4.9 hrs | 1.02 | 1.5 hrs | 0.69 |
| Black River Electric Coop - (MO) | 2021 | 9.1 hrs | - | 5.6 hrs | - |
| City of Fredericktown - (MO) | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 95% of Missouri's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 8,568 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, MO annual power outage report, 2021, 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/2021/missouri/madison-county