Mississippi Power Co
Investor Owned electric utility · Mississippi · #156 of 3,199 U.S. utilities by customers · EIA utility #12686
Mississippi Power Co is a investor owned electric utility serving 193,135 customers in Mississippi. In 2025 it sold 9,859 gigawatt-hours of electricity for $1.08B in revenue, an average realized rate of 11.00¢ per kWh across all customer classes and 15.69¢ per kWh for residential customers. Its reported service territory covers 23 counties. EIA records its activities as: generation, transmission, buying transmission, distribution, buying distribution, wholesale marketing.
Customers, sales and rates by customer class (2025)
| Class | Customers | Sales (GWh) | Revenue | Avg realized rate | Share of sales |
|---|---|---|---|---|---|
| Residential | 158,206 | 2,162 | $339.15M | 15.69¢ | |
| Commercial | 34,507 | 2,902 | $367.74M | 12.67¢ | |
| Industrial | 422 | 4,795 | $377.85M | 7.88¢ | |
| Total | 193,135 | 9,859 | $1.08B | 11.00¢ |
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 (1,139 kWh/month).
Five-year trend
| Year | Customers | Sales (GWh) | Revenue | Residential rate |
|---|---|---|---|---|
| 2021 | 190,660 | 9,254 | $875.22M | 13.67¢ |
| 2022 | 191,431 | 9,483 | $935.12M | 14.03¢ |
| 2023 | 191,692 | 9,655 | $962.69M | 14.47¢ |
| 2024 | 192,416 | 9,781 | $964.54M | 14.47¢ |
| 2025 | 193,135 | 9,859 | $1.08B | 15.69¢ |
Reliability (2025)
Average outage time (SAIDI): 105 minutes per customer per year
Average outages (SAIFI): 1.03 per customer
Average restoration time (CAIDI): 102 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: 18,227 GWh
Wholesale power purchased: 636 GWh
Winter peak demand: 2,263 MW
Energy losses: 5.4% of energy handled
Meters & rooftop solar (2025)
Smart (AMI) meters: 0.0% of 193,178 meters
Customer-sited generation (net metering): 577 installations, 8.2 MW of capacity
Counties served
Clarke, MSCovington, MSForrest, MSGeorge, MSGreene, MSHancock, MSHarrison, MSJackson, MSJasper, MSJefferson Davis, MSJones, MSLamar, MSLauderdale, MSLeake, MSMarion, MSNeshoba, MSNewton, MSPearl River, MSPerry, MSScott, MSSmith, MSStone, MSWayne, MS
Other large utilities in Mississippi
- Entergy Mississippi LLC - 458,925 customers, residential 13.86¢
- 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 #12686 in the EIA frame.