Data through June 2026
Cost to run · Illinois · 19.9¢/kWh residential average
How much does it cost to run an electric water heater in Illinois?
$241/yr · median certified model
Illinois's residential rate of 19.9¢/kWh tracks the national average (18.3¢) closely, so national cost figures translate almost directly: a median certified electric water heater runs about $241 a year here.
In the national ranking, Illinois lands at 36 of 51 for what an electric water heater costs to run. Model choice matters as much as geography: at Illinois rates the most efficient certified model (Eco-Logical OMNI-50HP1-1A) costs $135 a year while the most power-hungry (Smart Solar SSG2-ES 120) costs $346 — a spread of $211 every year. For reference, the national extremes are Nevada (13.1¢/kWh) and Hawaii (52.7¢/kWh); the same median electric water heater would cost $159 and $638 a year there.
The cheapest water heaters (electric) to run at Illinois rates
| # | Model | kWh/yr | $/yr in IL |
|---|---|---|---|
| 1 | Eco-Logical OMNI-50HP1-1A | 681 | $135 |
| 2 | GE Profile PF40S10FPY01 | 724 | $144 |
| 3 | Eco-Logical OMNI-50HP2-1A | 769 | $153 |
| 4 | GE Profile PH40S10BPY01 | 773 | $154 |
| 5 | Friedrich PROH40 T0 FD120-M | 780 | $155 |
| 6 | Friedrich PROH40 T0 FD120-MSO | 780 | $155 |
| 7 | Rheem PROPH40 T0 RH120-M | 780 | $155 |
| 8 | Rheem PROPH40 T0 RH120-MSO | 780 | $155 |
| 9 | Rheem XE40T10HM00U0 | 780 | $155 |
| 10 | Rheem XE40T10HMS00U0 | 780 | $155 |
Price any model at Illinois rates
Your rate, your numbers
- Per day
- 66¢
- Per month
- $20.06
- Per year
- $241
1,210 kWh/yr × 19.9¢/kWh = $241/yr
Prefilled with the median certified electric water heater (1,210 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 Illinois?
- About $241 a year for the median ENERGY STAR certified electric water heater, at Illinois's average residential rate of 19.9¢/kWh — that's $20.06 a month.
- Is electricity expensive in Illinois?
- Illinois's residential average of 19.9¢/kWh is 8% above the U.S. average of 18.3¢/kWh, ranking 36 of 51 jurisdictions (1 = cheapest).
- What's the cheapest electric water heater to run in Illinois?
- Among currently certified models, the Eco-Logical OMNI-50HP1-1A costs the least at about $135 a year at Illinois rates (681 kWh/yr).
- How does Illinois compare with other states?
- The same median electric water heater costs $159 a year in Nevada (the cheapest state) and $638 in Hawaii (the priciest). Illinois sits at $241.
Keep digging
- All certified water heaters (electric) compared
- Water Heaters (Electric) costs in Delaware (rank 34 of 51)
- Water Heaters (Electric) costs in Wisconsin (rank 35 of 51)
- Water Heaters (Electric) costs in Pennsylvania (rank 37 of 51)
- Water Heaters (Electric) costs in Maryland (rank 38 of 51)
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Rate source: US EIA, average residential price of electricity, see methodology.