County annual report · FIPS 28001
2021 Adams County, MS Power Outage Report
In 2021, customers in Adams County, MS went without power for an average of 64.7 hours, a total of 1.1M customer-hours (Mississippi average 17.2 hours). That ranks 10th worst of 78 Mississippi counties and 126th 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 Adams 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 17, 2021 17:15 | April 8, 2021 19:15 | 50d 2h | 11,766 | 861K |
| 2 | August 30, 2021 00:00 | September 3, 2021 22:30 | 4d 22h | 6,746 | 112K |
| 3 | February 16, 2021 05:45 | February 17, 2021 15:45 | 1d 10h | 3,327 | 3,629 |
| 4 | April 29, 2021 13:15 | May 6, 2021 16:30 | 7d 3h | 2,272 | 31K |
| 5 | April 16, 2021 21:45 | April 17, 2021 01:45 | 4h | 1,929 | 2,622 |
| 6 | August 14, 2021 03:45 | August 20, 2021 19:30 | 6d 15h | 1,920 | 3,357 |
| 7 | May 24, 2021 00:15 | July 2, 2021 07:15 | 39d 7h | 1,296 | 22K |
| 8 | July 7, 2021 04:00 | August 11, 2021 16:15 | 35d 12h | 1,266 | 26K |
| 9 | July 2, 2021 21:30 | July 3, 2021 01:15 | 3h 45m | 1,085 | 1,658 |
| 10 | September 15, 2021 06:30 | September 16, 2021 02:15 | 19h 45m | 977 | 6,441 |
Outage episodes by size in 2021: 47 reached 100+ customers, 9 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 Adams 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 |
| Southwest Mississippi E P A | 2021 | 108.4 hrs | - | 20.5 hrs | - |
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 ÷ 17,358 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. Adams County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Adams 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/adams-county