Data through April 2026
Cost to run · Tennessee · 14.9¢/kWh residential average
How much does it cost to run an electric water heater in Tennessee?
$162/yr · median certified model
Residential electricity in Tennessee runs 14.9¢/kWh — 21% under the U.S. average — putting the median certified electric water heater at about $162 a year, versus $204 nationally.
Tennessee ranks 15 of 51 jurisdictions for electric water heater running costs — solidly mid-table. Model choice matters as much as geography: at Tennessee rates the most efficient certified model (Friedrich PROH40 T2 FD400-15) costs $96 a year while the most power-hungry (Smart Solar SSG2-ES 120) costs $260 — a spread of $164 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 Tennessee rates
| # | Model | kWh/yr | $/yr in TN |
|---|---|---|---|
| 1 | Friedrich PROH40 T2 FD400-15 | 643 | $96 |
| 2 | Rheem PROPH40 T2 RH375-15 | 643 | $96 |
| 3 | Rheem PROPH40 T2 RH400-15 | 643 | $96 |
| 4 | Rheem XE40T10H22U0 | 643 | $96 |
| 5 | Rheem XE40T10H22U1 | 643 | $96 |
| 6 | Richmond 10E40-HP515 | 643 | $96 |
| 7 | Richmond 10E40-HP5U15 | 643 | $96 |
| 8 | Ruud PROUH40 T2 RU375-15 | 643 | $96 |
| 9 | Ruud PROUH40 T2 RU400-15 | 643 | $96 |
| 10 | Eco-Logical OMNI-50HP1-1A | 681 | $102 |
Price any model at Tennessee rates
Your rate, your numbers
- Per day
- 44¢
- Per month
- $13.47
- Per year
- $162
1,082 kWh/yr × 14.9¢/kWh = $162/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 Tennessee?
- About $162 a year for the median ENERGY STAR certified electric water heater, at Tennessee's average residential rate of 14.9¢/kWh — that's $13.47 a month.
- Is electricity expensive in Tennessee?
- Tennessee's residential average of 14.9¢/kWh is 21% below the U.S. average of 18.8¢/kWh, ranking 15 of 51 jurisdictions (1 = cheapest).
- What's the cheapest electric water heater to run in Tennessee?
- Among currently certified models, the Friedrich PROH40 T2 FD400-15 costs the least at about $96 a year at Tennessee rates (643 kWh/yr).
- How does Tennessee 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). Tennessee sits at $162.
Keep digging
- All certified water heaters (electric) compared
- Water Heaters (Electric) costs in South Dakota (rank 13 of 51)
- Water Heaters (Electric) costs in Wyoming (rank 14 of 51)
- Water Heaters (Electric) costs in Kentucky (rank 16 of 51)
- Water Heaters (Electric) costs in New Mexico (rank 17 of 51)
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Rate source: US EIA, average residential price of electricity, see methodology.