Electricity rates — Entergy Mississippi Inc
A household served by Entergy Mississippi Inc using 1,000 kWh a month pays about $1,528.56 a year on the cheapest of 2 generally available plans — Residential Service Single Phase (RS-40C) from Entergy Mississippi Inc, in effect since July 2025. Rates checked September 23, 2026. A further 2 schedules are published but restricted — means-tested, closed to new customers, or needing particular equipment — and they are priced further down.
Every priced plan, 1,000 kWh/mo
| Plan | Per year | vs cheapest | Effective |
|---|---|---|---|
| Residential Electric Water Heating (RS-35W) [CLOSED Rate]tiered · in effect since January 2018 · closed to new customers | $1,404.60 | −$123.96 | 11.7¢ |
| Residential Electric Water Heating (RS-35W) [CLOSED Rate] Three Phasetiered · in effect since January 2018 · closed to new customers | $1,447.08 | −$81.48 | 12.1¢ |
| Residential Service Single Phase (RS-40C)✓ cheapesttiered · in effect since July 2025 | $1,528.56 | — | 12.7¢ |
| Residential Service Three Phase (RS-40C)tiered · in effect since July 2025 | $1,728.84 | +$200.28 | 14.4¢ |
Cost across usage levels
The cheapest plan at each consumption level, showing whether the ranking holds as usage changes.
- 500 kWh/mo — cheapest $980.64 (Residential Service Single Phase (RS-40C)), dearest $1,180.92, a $200.28 spread
- 1,000 kWh/mo — cheapest $1,528.56 (Residential Service Single Phase (RS-40C)), dearest $1,728.84, a $200.28 spread
- 2,000 kWh/mo — cheapest $2,624.52 (Residential Service Single Phase (RS-40C)), dearest $2,824.80, a $200.28 spread
What a typical bill costs
At 1,000 kWh a month the 2 generally available plans here run from $1,528.56 on Residential Service Single Phase (RS-40C) to $1,728.84 on Residential Service Three Phase (RS-40C), with a median of $1,628.70.
Effective rates, bill divided by kilowatt-hours, span 12.7¢ to 14.4¢ per kWh at that usage.
What Entergy Mississippi Inc's customers were billed in 2024
Priced at 1,188 kWh a month, what Entergy Mississippi Inc's customers used on average, its open plans come within 3% of what EIA reports they were billed in 2024: the plans here describe its bills well.
| Ownership, as EIA classes it | Investor-owned |
|---|---|
| Full-service homes in Mississippi | 384,611 |
| Share of Mississippi's households | 29% |
| Average use per home | 1,188 kWh a month |
| Average bill per home | $157.00 a month |
| Billed per kWh, riders included | 13.2¢ |
| Median open plan here, at that use | 12.9¢ |
Entergy Mississippi LLC in U.S. Energy Information Administration, Form EIA-861, 2024 (Sales_Ult_Cust_2024.xlsx), retrieved September 23, 2026.
How it compares
Among the 109 utilities indexed, Entergy Mississippi Inc's cheapest open plan is the 46th-lowest, 7% less than their median of $1,649.16. It sits between Cuivre River Electric Coop Inc ($1,522.50) and PacifiCorp (Utah) ($1,556.61).
No other utility indexed in Mississippi has a cheaper open plan; the other one starts higher.
Its fixed charge, $31.82 a month on Residential Service Single Phase (RS-40C), is higher than on the cheapest plan of 103 of the other 108 utilities.
Residential Service Single Phase (RS-40C) is tiered: past 500 kWh a month, each kWh costs 0.8¢ less. Of the 51 utilities whose plans step, that is the 10th-smallest step.
In the guides: What a bill costs before a single kilowatt-hour · The price that changes once the meter passes a line
How the answer changes with usage
Residential Service Single Phase (RS-40C) is cheapest at every level tested — $980.64 a year at 500 kWh a month, $2,624.52 at 2,000 kWh.
Cheapest 4 plans at 1,000 kWh a month
Residential Electric Water Heating (RS-35W) [CLOSED Rate] — $1,404.60 a year, 11.7¢ per kWh effective, tiered. It carries a $6.75 monthly standing charge. In effect since January 2018. Too old to quote as a current price.
Residential Electric Water Heating (RS-35W) [CLOSED Rate] Three Phase — $1,447.08 a year, 12.1¢ per kWh effective, tiered. It carries a $10.29 monthly standing charge. In effect since January 2018. Too old to quote as a current price.
Residential Service Single Phase (RS-40C) — $1,528.56 a year, 12.7¢ per kWh effective, tiered. It carries a $31.82 monthly standing charge. In effect since July 2025.
Residential Service Three Phase (RS-40C) — $1,728.84 a year, 14.4¢ per kWh effective, tiered. It carries a $48.51 monthly standing charge. In effect since July 2025.
How these plans are structured
Of 4 priceable plans: 4 tiered.
Fixed monthly charges run from $6.75 to $48.51.
Who provides these plans
EIA-861 lists Entergy Mississippi Inc serving homes in Mississippi and in no other state, which is how its plans are placed there. 4 of its 4 published residential schedules can be priced.
The largest saving available here
Moving from Residential Service Three Phase (RS-40C) to Residential Service Single Phase (RS-40C) saves $200.28 a year at 1,000 kWh a month, with no change in consumption.
New to these terms? The methodology page explains tiered bands, time-of-use periods and fixed charges, and sets out exactly what the rate engine assumes.
Estimate — your actual bill may differ.
Tariff structures from NREL/OpenEI Utility Rate Database (CC0 1.0), retrieved September 23, 2026.