County annual report · FIPS 28135
2021 Tallahatchie County, MS Power Outage Report
In 2021, customers in Tallahatchie County, MS went without power for an average of 20.0 hours, a total of 107K customer-hours (Mississippi average 17.2 hours). That ranks 29th worst of 78 Mississippi counties and 433rd 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 Tallahatchie 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 | July 17, 2021 02:00 | July 17, 2021 02:15 | 15m | 2,001 | 500 |
| 2 | June 8, 2021 13:15 | June 11, 2021 21:15 | 3d 8h | 1,536 | 23K |
| 3 | June 18, 2021 00:30 | June 18, 2021 10:00 | 9h 30m | 1,518 | 7,899 |
| 4 | April 6, 2021 20:00 | April 6, 2021 20:15 | 15m | 1,434 | 359 |
| 5 | December 11, 2021 03:15 | December 13, 2021 12:45 | 2d 9h | 1,168 | 6,932 |
| 6 | December 6, 2021 11:15 | December 7, 2021 03:15 | 16h | 1,036 | 5,139 |
| 7 | September 23, 2021 20:15 | September 23, 2021 22:45 | 2h 30m | 932 | 1,632 |
| 8 | September 23, 2021 16:45 | September 23, 2021 18:00 | 1h 15m | 927 | 696 |
| 9 | May 11, 2021 14:45 | May 11, 2021 15:00 | 15m | 796 | 199 |
| 10 | February 11, 2021 14:45 | February 13, 2021 00:30 | 1d 9h | 659 | 6,119 |
Outage episodes by size in 2021: 54 reached 100+ customers, 6 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 Tallahatchie 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 |
| Delta Electric Power Assn | 2021 | 64.6 hrs | 4.93 | 7.6 hrs | 4.19 |
| Coahoma Electric Power Assn | - | - | - | - | - |
| Tallahatchie Valley E P A | - | - | - | - | - |
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 ÷ 5,372 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. Tallahatchie County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Tallahatchie 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/tallahatchie-county