County annual report · FIPS 28089
2021 Madison County, MS Power Outage Report
In 2021, customers in Madison County, MS went without power for an average of 23.0 hours, a total of 755K customer-hours (Mississippi average 17.2 hours). That ranks 27th worst of 78 Mississippi counties and 369th of 2,974 nationally.
Compared with MS, the US and 2020
Coverage line is EAGLE-I's share of Mississippi 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 | May 4, 2021 15:45 | May 10, 2021 23:45 | 6d 8h | 11,930 | 220K |
| 2 | February 17, 2021 09:00 | February 25, 2021 02:00 | 7d 17h | 6,942 | 231K |
| 3 | June 12, 2021 03:15 | June 16, 2021 06:15 | 4d 3h | 5,172 | 56K |
| 4 | September 1, 2021 14:45 | September 4, 2021 00:00 | 2d 9h | 3,452 | 29K |
| 5 | August 29, 2021 19:15 | September 1, 2021 01:15 | 2d 6h | 2,810 | 29K |
| 6 | August 27, 2021 11:30 | August 28, 2021 01:30 | 14h | 2,548 | 786 |
| 7 | May 27, 2021 11:00 | May 27, 2021 17:30 | 6h 30m | 2,250 | 1,671 |
| 8 | July 6, 2021 13:30 | July 6, 2021 22:15 | 8h 45m | 2,069 | 1,739 |
| 9 | March 17, 2021 18:30 | March 18, 2021 23:30 | 1d 5h | 1,748 | 4,274 |
| 10 | July 27, 2021 12:45 | July 30, 2021 04:15 | 2d 15h | 1,686 | 11K |
Outage episodes by size in 2021: 107 reached 100+ customers, 23 reached 1,000+ customers, 1 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 |
|---|---|---|---|---|---|
| Entergy Mississippi LLC | 2021 | 22.9 hrs | 2.44 | 4.7 hrs | 1.50 |
| Canton Municipal Utilities | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 77% of Mississippi's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 32,775 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, MS 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/mississippi/madison-county