County annual report · FIPS 28129
2021 Smith County, MS Power Outage Report
In 2021, customers in Smith County, MS went without power for an average of 51.4 hours, a total of 370K customer-hours (Mississippi average 17.2 hours). That ranks 14th worst of 78 Mississippi counties and 175th 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 Smith 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 | February 15, 2021 10:45 | February 22, 2021 02:00 | 6d 15h | 5,329 | 284K |
| 2 | May 4, 2021 20:15 | May 6, 2021 22:15 | 2d 2h | 2,179 | 20K |
| 3 | August 29, 2021 21:45 | September 1, 2021 00:30 | 2d 2h | 1,671 | 20K |
| 4 | October 13, 2021 15:00 | October 13, 2021 18:00 | 3h | 1,524 | 2,222 |
| 5 | July 9, 2021 14:00 | July 9, 2021 16:15 | 2h 15m | 1,511 | 403 |
| 6 | May 21, 2021 09:30 | May 21, 2021 11:30 | 2h | 1,491 | 2,549 |
| 7 | May 21, 2021 19:00 | May 22, 2021 02:15 | 7h 15m | 1,489 | 7,468 |
| 8 | August 8, 2021 13:45 | August 8, 2021 18:00 | 4h 15m | 1,480 | 1,972 |
| 9 | June 13, 2021 19:45 | June 15, 2021 03:15 | 1d 7h | 1,250 | 3,835 |
| 10 | May 24, 2021 19:30 | May 24, 2021 21:30 | 2h | 1,190 | 299 |
Outage episodes by size in 2021: 40 reached 100+ customers, 10 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 Smith 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 |
| Mississippi Power Co | 2021 | 5.9 hrs | 1.65 | 82 min | 1.01 |
| Southern Pine Electric Cooperative | - | - | - | - | - |
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 ÷ 7,211 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. Smith County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Smith 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/smith-county