Cost to Run a Phone Charger in Maryland
Maryland's average residential electricity rate is 21.8¢/kWh as of May 2026 — the 37th cheapest in the country, 18% above the U.S. average. At typical usage (3 hours/day), a phone charger here costs $0.12 per month.
Per hour
0.1¢
at 4–20 W
Per day
0.4¢
3 hours/day
Per month
$0.12
0.5 kWh
Per year
$1.43
6.6 kWh
By usage level in Maryland
| Usage | Per day | Per month | Per year |
|---|---|---|---|
| Light (1.5 hrs/day) | 0.2¢ | 6.0¢ | $0.72 |
| Typical (3 hrs/day) | 0.4¢ | $0.12 | $1.43 |
| Heavy (6 hrs/day) | 0.8¢ | $0.24 | $2.86 |
Maryland 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 Maryland?
At Maryland's current average residential rate of 21.8¢/kWh (May 2026), a phone charger with typical usage costs about 0.4¢ per day, $0.12 per month, or $1.43 per year.
Is running a phone charger in Maryland more expensive than average?
Yes. Maryland's electricity costs about 18% more than the U.S. average, so the same usage costs $0.12 per month here versus $0.10 nationally.
What does electricity cost in Maryland right now?
Maryland residents pay an average of 21.8¢ per kWh as of May 2026 — the 37th cheapest rate of the 51 U.S. jurisdictions we track.