Data through April 2026
Cost to run · Mississippi · 16.8¢/kWh residential average
How much does it cost to run an electric water heater in Mississippi?
$181/yr · median certified model
Residential electricity in Mississippi runs 16.8¢/kWh — 11% under the U.S. average — putting the median certified electric water heater at about $181 a year, versus $204 nationally.
Mississippi ranks 27 of 51 jurisdictions for electric water heater running costs — solidly mid-table. Model choice matters as much as geography: at Mississippi rates the most efficient certified model (Friedrich PROH40 T2 FD400-15) costs $108 a year while the most power-hungry (Smart Solar SSG2-ES 120) costs $292 — a spread of $184 every year. For reference, the national extremes are North Dakota (12.3¢/kWh) and Hawaii (46.6¢/kWh); the same median electric water heater would cost $134 and $504 a year there.
The cheapest water heaters (electric) to run at Mississippi rates
| # | Model | kWh/yr | $/yr in MS |
|---|---|---|---|
| 1 | Friedrich PROH40 T2 FD400-15 | 643 | $108 |
| 2 | Rheem PROPH40 T2 RH375-15 | 643 | $108 |
| 3 | Rheem PROPH40 T2 RH400-15 | 643 | $108 |
| 4 | Rheem XE40T10H22U0 | 643 | $108 |
| 5 | Rheem XE40T10H22U1 | 643 | $108 |
| 6 | Richmond 10E40-HP515 | 643 | $108 |
| 7 | Richmond 10E40-HP5U15 | 643 | $108 |
| 8 | Ruud PROUH40 T2 RU375-15 | 643 | $108 |
| 9 | Ruud PROUH40 T2 RU400-15 | 643 | $108 |
| 10 | Eco-Logical OMNI-50HP1-1A | 681 | $114 |
Price any model at Mississippi rates
Your rate, your numbers
- Per day
- 50¢
- Per month
- $15.11
- Per year
- $181
1,082 kWh/yr × 16.8¢/kWh = $181/yr
Prefilled with the median certified electric water heater (1,082 kWh/yr). Every model page on this site carries its exact certified figure.
Questions, answered with the data
- How much does it cost to run an electric water heater in Mississippi?
- About $181 a year for the median ENERGY STAR certified electric water heater, at Mississippi's average residential rate of 16.8¢/kWh — that's $15.11 a month.
- Is electricity expensive in Mississippi?
- Mississippi's residential average of 16.8¢/kWh is 11% below the U.S. average of 18.8¢/kWh, ranking 27 of 51 jurisdictions (1 = cheapest).
- What's the cheapest electric water heater to run in Mississippi?
- Among currently certified models, the Friedrich PROH40 T2 FD400-15 costs the least at about $108 a year at Mississippi rates (643 kWh/yr).
- How does Mississippi compare with other states?
- The same median electric water heater costs $134 a year in North Dakota (the cheapest state) and $504 in Hawaii (the priciest). Mississippi sits at $181.
Keep digging
- All certified water heaters (electric) compared
- Water Heaters (Electric) costs in Minnesota (rank 25 of 51)
- Water Heaters (Electric) costs in Colorado (rank 26 of 51)
- Water Heaters (Electric) costs in Texas (rank 28 of 51)
- Water Heaters (Electric) costs in South Carolina (rank 29 of 51)
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Rate source: US EIA, average residential price of electricity, see methodology.