Electric water heater Electricity Cost in Idaho — $48.88/month (2026)
Idaho monthly
$48.88
U.S. average monthly
$72.81
Difference
-$23.93
← Electric water heater (all states) · Idaho electricity rate
Quick rate
Daily cost
$1.63
Monthly cost
$48.88
+$0.00 vs typical
Yearly cost
$594.75
kWh / month
405.0 kWh
Local monthly estimate: $48.88 · U.S. average equivalent: $72.81
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ad-after-calculator Quick answer
Running a typical electric water heater in Idaho costs about $1.63/day or $48.88/month at roughly $0.121/kWh, assuming 3 hours of use per day at 4500 W. The U.S. average rate is about $0.180/kWh, so Idaho is roughly 33% lower than average for this estimate.
vs U.S. average
Local rate (Idaho)
$0.121/kWh
Monthly estimate: $48.88
U.S. average rate
$0.180/kWh
Monthly estimate: $72.81
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ad-after-state-table FAQ
- Most electric water heater units fall between 3000 W and 5500 W, with 4500 W as a typical value for estimates.
- Our calculator uses 4500 W as the typical wattage, within a reported range of 3000–5500 W.
- At 3 hours/day and 4500 W, the estimate is about 13.50 kWh per day.
- Using 3 hours/day, the estimate is about 405.0 kWh per month.
- Per hour, electric water heater uses about 4.500 kWh (at 4500 W).
- At typical use (4500 W and 3 hours/day), the estimate is about $1.63/day at roughly $0.121/kWh.
- At typical use (4500 W and 3 hours/day), the estimate is about $48.88/month at roughly $0.121/kWh.
- Running for one hour at 4500 W costs about $0.543 per hour (using the Idaho rate of about $0.121/kWh).
- For typical use, the calculator estimates about $48.88/month for electric water heater in Idaho.
- At the typical Idaho residential rate, the estimate is about 405.0 kWh per month, which corresponds to roughly $48.88/month for electric water heater.
- Compared to the U.S. average, Idaho is about 33% lower for this estimate. Monthly cost is about $48.88 in Idaho vs $72.81 at the national average.
- Start with practical steps from our tips list (e.g., Avoid running this appliance longer than you need each day.). Smaller changes reduce kWh usage, which reduces the bill at your local rate.
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Est. monthly at Idaho rate ($0.121/kWh)