County annual report · FIPS 28013
2021 Calhoun County, MS Power Outage Report
In 2021, customers in Calhoun County, MS went without power for an average of 0.0 hours, a total of 239 customer-hours (Mississippi average 17.2 hours). That ranks 78th worst of 78 Mississippi counties and 2942nd 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 Calhoun 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 | August 2, 2021 17:30 | August 2, 2021 18:00 | 30m | 20 | 10 |
| 2 | March 11, 2021 12:45 | March 11, 2021 13:00 | 15m | 19 | 5 |
| 3 | June 24, 2021 13:45 | June 24, 2021 14:45 | 1h | 19 | 19 |
| 4 | March 16, 2021 21:15 | March 16, 2021 22:15 | 1h | 15 | 15 |
| 5 | April 4, 2021 11:45 | April 4, 2021 17:30 | 5h 45m | 14 | 81 |
| 6 | June 8, 2021 23:45 | June 9, 2021 01:15 | 1h 30m | 14 | 21 |
| 7 | August 29, 2021 17:00 | August 29, 2021 18:45 | 1h 45m | 14 | 25 |
| 8 | November 10, 2021 17:30 | November 10, 2021 17:45 | 15m | 14 | 4 |
| 9 | August 30, 2021 22:30 | August 31, 2021 03:00 | 4h 30m | 13 | 59 |
| 10 | March 23, 2021 20:15 | March 23, 2021 20:30 | 15m | 6 | 2 |
Outage episodes by size in 2021: 0 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 Calhoun 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 |
| Natchez Trace Elec Power Assn | 2021 | 11.2 hrs | - | 5.3 hrs | - |
| Pontotoc Electric Power Assn | - | - | - | - | - |
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 ÷ 7,468 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. Calhoun County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Calhoun 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/calhoun-county