Power Outages in Jefferson County, MS
Entergy Mississippi LLC and Southwest Mississippi E P A publish only a system-wide total, not county figures. In 2025, the average customer here lost power for about 51.6 hours.
Jefferson County, MS is served by 2 tracked utilities.
Cite this data
- URL
- https://massoutage.com/mississippi/jefferson-county
- As of
- Not available
- Publisher
- MassOutage
MassOutage, "Power Outages in Jefferson County, MS". https://massoutage.com/mississippi/jefferson-county
Entergy Mississippi LLC and Southwest Mississippi E P A publish no county-level figures.
0.0%of this county's ~4,867 customers are served by utilities with a county-level live feed.
System-wide total only, no county split: Entergy Mississippi LLC, Southwest Mississippi E P A.
| Utility | Feed | Out | Served | % out | Small outages | Incidents | Utility ETR | As of |
|---|---|---|---|---|---|---|---|---|
| Entergy Mississippi LLC | Live · total only | not by county | - | - | - | - | - | - |
| Southwest Mississippi E P A | Live · total only | not by county | - | - | - | - | - | - |
Electricity-dependent residents
HHS emPOWER · data October 7, 2026Medicare beneficiaries in Jefferson Countywho rely on electricity-dependent medical equipment (ventilators, oxygen concentrators, home dialysis, powered wheelchairs, and more). HHS reports counts of 1–10 as “≤11”. Medicare only, so the full at-risk population is larger.
By ZIP code (3)
| ZIP | Power-dependent | Ventilators | O2 concentrators | Home dialysis |
|---|---|---|---|---|
| 39069 | 57 | ≤11 | 32 | ≤11 |
| 39096 | 17 | ≤11 | ≤11 | ≤11 |
| 39668 | ≤11 | ≤11 | ≤11 | 0 |
Emergency managers can request identified beneficiary lists through their state health department via the HHS emPOWER program.
Outage began, grew, restoration estimate changed, restored: by email, Slack, Teams, Discord or signed webhook, for Jefferson County or any town and utility in it.
No active NWS alerts for Jefferson County right now.
Jefferson County has been under 18 National Weather Service alerts recently, most recently a Red Flag Warning on October 17, 2026.
- Heat Advisory ×6
- Red Flag Warning ×3
- Tropical Cyclone Local Statement ×3
- Wind Advisory ×3
- Fire Weather Watch ×2
- Dense Fog Advisory ×1
Latest Jefferson County, MS outage updates
A running log of how this outage has changed, updated automatically as utilities report in.
- RESOLVED
Power restored after 2h 56m
- OUTAGE BEGAN
Outage began: 330 customers out (6.8% of the county)
- RESOLVED
Power restored after 1h 21m
- OUTAGE BEGAN
Outage began: 365 customers out (7.5% of the county)
- RESOLVED
Power restored after 44m
- OUTAGE BEGAN
Outage began: 110 customers out (2.3% of the county)
Hardest-hit cities in Jefferson County
Where this event is concentrated across the county's towns and townships.
Historical reliability
In 2025, the average customer in Jefferson County went about 51.6 hours without power. Peak simultaneous outage on record reached 4,028 customers.
The US EIA reports Mississippi utilities averaged 8.7 hrs without power per customer (SAIDI) in 2025, a cross-check on our county estimate of 51.6 hrs.
Worst year here was 2021 (peak 4,028 customers out) · decade average 41.1 hrs without power per customer/yr.
| Year | Outage events | Peak customers out | Avg hrs/customer |
|---|---|---|---|
| 2015 | 104 | 1,329 | 14.1 |
| 2016 | 104 | 1,310 | 1.5 |
| 2017 | 100 | 1,337 | 11.1 |
| 2018 | 105 | 1,301 | 1.8 |
| 2019 | 158 | 2,143 | 23.2 |
| 2020 | 267 | 4,028 | 84.7 |
| 2021 | 264 | 4,028 | 143.6 |
| 2022 | 420 | 2,512 | 34.6 |
| 2023 | 424 | 2,919 | 34.6 |
| 2024 | 382 | 2,277 | 51.5 |
| 2025 | 361 | 2,103 | 51.6 |
Cost of power in Jefferson County
ENERGY & AI DEMAND →Estimated residential electricity price for Jefferson County, customer-weighted across the utilities serving it (US EIA, 2025). Retail prices aren't published at the county level; this is a derived estimate.
- Entergy Mississippi LLC13.9¢384,493 cust
- Southwest Mississippi E P A15.3¢23,095 cust
Weighted by each utility's residential customer count (utilities report customers at the state level; a per-county share isn't published). Rising retail prices track a national demand surge; see energy & the data-center boom.
Relatively Low hurricanes exposure · 41.1 hrs/yr of outages over the last decade.
FEMA rates this county’s social vulnerability very high: outages hit harder where communities are less able to respond and recover.
All hazard rankings →Power outages in Jefferson County: FAQ
- How often does Jefferson County, MS lose power?
- Based on EAGLE-I records, Jefferson County, MS logged 361 distinct outage events in 2025, averaging about 51.6 hours without power per customer over the year.
- What was the worst power outage in Jefferson County, MS?
- The largest tracked outage peaked at 4,028 customers without power, beginning October 9, 2020 and lasting about 13d 15h.
- Is there a power outage in Jefferson County, MS right now?
- No major outage is currently reported for Jefferson County, MS. Live coverage depends on whether local utilities report to ODIN.
- Which utilities serve Jefferson County, MS?
- Tracked electric providers include Entergy Mississippi LLC, Southwest Mississippi E P A.
Outages are tracked at the county level; these ZIP codes fall within Jefferson County.
39069, 39096, 39668
Electric providers serving this county
From EIA-861 service territory, with official reliability where reported.
| Provider | Official SAIDI (EIA) | Live | Report outage |
|---|---|---|---|
| Entergy Mississippi LLC | 10.7 hrs | Live · total only | - |
| Southwest Mississippi E P A | 45.6 hrs | Live · total only | - |
Data from DOE/ORNL ODIN, DOE EAGLE-I, EIA Form 861 (utility reliability), EIA electricity retail prices and FEMA National Risk Index, every source we read. Historical figures derive from the DOE/ORNL EAGLE-I dataset (EAGLE-I tracked roughly 0% of Mississippi customers). Machine-readable data: /api/v1/counties/28063 and /api/v1/counties/28063/history.