Cost to Run a Phone Charger in Idaho
Idaho's average residential electricity rate is 12.4¢/kWh as of May 2026 — the 1st cheapest in the country, 33% below the U.S. average. At typical usage (3 hours/day), a phone charger here costs 6.8¢ per month.
Per hour
0.1¢
at 4–20 W
Per day
0.2¢
3 hours/day
Per month
6.8¢
0.5 kWh
Per year
$0.81
6.6 kWh
By usage level in Idaho
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (1.5 hrs/day) | 0.1¢ | 3.4¢ | $0.41 |
| Typical (3 hrs/day) | 0.2¢ | 6.8¢ | $0.81 |
| Heavy (6 hrs/day) | 0.4¢ | $0.14 | $1.63 |
Idaho vs. the rest of the country
Monthly cost at typical usage.
Frequently asked questions
How much does it cost to run a phone charger in Idaho?
At Idaho's current average residential rate of 12.4¢/kWh (May 2026), a phone charger with typical usage costs about 0.2¢ per day, 6.8¢ per month, or $0.81 per year.
Is running a phone charger in Idaho more expensive than average?
No — it's cheaper. Idaho's rate is about 33% below the U.S. average: 6.8¢ per month here versus $0.10 nationally.
What does electricity cost in Idaho right now?
Idaho residents pay an average of 12.4¢ per kWh as of May 2026 — the 1st cheapest rate of the 51 U.S. jurisdictions we track.