Entergy Mississippi LLC
Investor Owned electric utility · Mississippi · #89 of 3,199 U.S. utilities by customers · EIA utility #12685
Entergy Mississippi LLC is a investor owned electric utility serving 458,925 customers in Mississippi. In 2025 it sold 13,211 gigawatt-hours of electricity for $1.67B in revenue, an average realized rate of 12.61¢ per kWh across all customer classes and 13.86¢ per kWh for residential customers. Its reported service territory covers 46 counties. EIA records its activities as: generation, transmission, buying transmission, distribution, buying distribution.
Customers, sales and rates by customer class (2025)
| Class | Customers | Sales (GWh) | Revenue | Avg realized rate | Share of sales |
|---|---|---|---|---|---|
| Residential | 384,493 | 5,584 | $774.24M | 13.86¢ | |
| Commercial | 70,531 | 5,008 | $669.16M | 13.36¢ | |
| Industrial | 3,901 | 2,618 | $223.00M | 8.52¢ | |
| Total | 458,925 | 13,211 | $1.67B | 12.61¢ |
Average realized rate = revenue divided by sales as reported on EIA Form 861. It blends fixed charges, demand charges and riders into one per-kWh figure; it is not the utility's tariff rate. Estimated residential bill assumes the average residential customer's actual 2025 usage (1,210 kWh/month).
Five-year trend
| Year | Customers | Sales (GWh) | Revenue | Residential rate |
|---|---|---|---|---|
| 2021 | 458,987 | 12,745 | $1.22B | 10.39¢ |
| 2022 | 459,673 | 12,948 | $1.40B | 11.62¢ |
| 2023 | 460,082 | 12,885 | $1.63B | 13.62¢ |
| 2024 | 460,181 | 12,826 | $1.55B | 13.21¢ |
| 2025 | 458,925 | 13,211 | $1.67B | 13.86¢ |
Reliability (2025)
Average outage time (SAIDI): 640 minutes per customer per year
Average outages (SAIFI): 2.61 per customer
Average restoration time (CAIDI): 245 minutes
As reported for Mississippi under the IEEE standard, with major event days included where the standard reports them. Lower is better; see the reliability rankings.
Energy supply (2025)
Net generation: 11,348 GWh
Wholesale power purchased: 7,525 GWh
Winter peak demand: 2,462 MW
Energy losses: 6.0% of energy handled
Meters & rooftop solar (2025)
Smart (AMI) meters: 99.6% of 540,250 meters
Customer-sited generation (net metering): 828 installations, 2.9 MW of capacity
Counties served
Adams, MSAmite, MSAttala, MSBolivar, MSCalhoun, MSCarroll, MSChoctaw, MSClaiborne, MSClay, MSCoahoma, MSCopiah, MSCovington, MSDeSoto, MSFranklin, MSGrenada, MSHinds, MSHolmes, MSHumphreys, MSIssaquena, MSJefferson Davis, MSJefferson, MSLawrence, MSLeake, MSLeflore, MSLincoln, MSMadison, MSMontgomery, MSPanola, MSPike, MSQuitman, MSRankin, MSScott, MSSharkey, MSSimpson, MSSmith, MSSunflower, MSTallahatchie, MSTate, MSTunica, MSWalthall, MSWarren, MSWashington, MSWebster, MSWilkinson, MSYalobusha, MSYazoo, MS
Other large utilities in Mississippi
- Mississippi Power Co - 193,135 customers, residential 15.69¢
- Coast Electric Power Assn - (MS) - 91,721 customers, residential 14.01¢
- Singing River Elec Cooperative - 81,787 customers, residential 13.54¢
- Southern Pine Electric Cooperative - 71,243 customers, residential 14.47¢
- Pearl River Valley El Pwr Assn - 54,457 customers, residential 15.58¢
- 4-County Electric Power Assn - 51,748 customers, residential 13.68¢
- Tombigbee Electric Power Assn - 45,945 customers, residential 13.03¢
- Dixie Electric Power Assn - (MS) - 41,654 customers, residential 13.90¢
All Mississippi utilities and rates
Source: U.S. Energy Information Administration, Form EIA-861 2025 (filed by the utility; figures as published). Utility #12685 in the EIA frame.