County annual report · FIPS 28027
2021 Coahoma County, MS Power Outage Report
In 2021, customers in Coahoma County, MS went without power for an average of 2.6 hours, a total of 31K customer-hours (Mississippi average 17.2 hours). That ranks 66th worst of 78 Mississippi counties and 1994th 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 Coahoma 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 | November 3, 2021 16:00 | November 3, 2021 17:15 | 1h 15m | 1,211 | 606 |
| 2 | February 11, 2021 14:45 | February 12, 2021 18:45 | 1d 4h | 754 | 1,955 |
| 3 | December 11, 2021 09:30 | December 11, 2021 16:45 | 7h 15m | 534 | 2,429 |
| 4 | May 13, 2021 23:15 | May 26, 2021 15:30 | 12d 16h | 514 | 2,038 |
| 5 | February 22, 2021 18:45 | March 31, 2021 20:30 | 37d 1h | 513 | 7,880 |
| 6 | August 23, 2021 15:45 | August 23, 2021 21:15 | 5h 30m | 513 | 659 |
| 7 | November 8, 2021 21:15 | November 9, 2021 05:45 | 8h 30m | 449 | 811 |
| 8 | September 17, 2021 23:45 | September 18, 2021 17:45 | 18h | 442 | 3,016 |
| 9 | February 16, 2021 05:30 | February 17, 2021 15:30 | 1d 10h | 393 | 142 |
| 10 | April 8, 2021 00:45 | April 10, 2021 21:30 | 2d 20h | 276 | 1,446 |
Outage episodes by size in 2021: 19 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 Coahoma 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 |
| Coahoma Electric Power Assn | - | - | - | - | - |
| Clarksdale Public 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 ÷ 12,025 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. Coahoma County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Coahoma 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/coahoma-county