Cost to Run a 25-watt router modem combo for 8 hours in Ohio
Running a 25-watt router modem combo for 8 hours uses 0.2 kWh and costs $0.034 at $0.17/kWh in Ohio. Do that every day and it adds up to $1.02 a month.
Calculate your own cost
- Per hour
- $0.0040.03 kWh
- Per day
- $0.0340.2 kWh
- Per week
- $0.2381.4 kWh
- Per month (30 days)
- $1.026 kWh
- Per year
- $12.4173 kWh
Formula: watts ÷ 1,000 × hours × rate. Edit any box and every number updates instantly.
People also ask
How much does a 25-watt router modem combo cost per hour?
At $0.17/kWh, it costs $0.004 per hour. The maths: 25 W ÷ 1,000 = 0.03 kWh per hour, × $0.17 = $0.004.
How much does it cost per month?
Used 8 hours a day for 30 days, it costs about $1.02 per month and uses 6 kWh. Change the hours in the calculator above to match how you use it.
How many kWh does it use?
0.2 kWh per day, 6 kWh per month and 73 kWh per year at 8 hours a day. A kWh is one kilowatt (1,000 W) used for one hour. It is the unit on your electricity bill.
How can I lower the cost?
Use the provider’s rated power as a guide and avoid frequent unnecessary restarts. Check your bill for the exact rate and enter it above.
Does my electricity rate change the answer?
Yes, a lot. At 10¢ per kWh the monthly cost is $0.60 and at 30¢ it is $1.80. Find your rate on your bill (total cost ÷ kWh used) and type it into the calculator.
Cost by hours of use in Ohio
| Used per day | Energy per day | Cost per day | Cost per month | Cost per year |
|---|---|---|---|---|
| 1 hour | 0.03 kWh | $0.004 | $0.128 | $1.55 |
| 2 hours | 0.05 kWh | $0.009 | $0.255 | $3.10 |
| 3 hours | 0.08 kWh | $0.013 | $0.383 | $4.65 |
| 4 hours | 0.1 kWh | $0.017 | $0.51 | $6.21 |
| 5 hours | 0.13 kWh | $0.021 | $0.638 | $7.76 |
| 6 hours | 0.15 kWh | $0.026 | $0.765 | $9.31 |
| 7 hours | 0.18 kWh | $0.03 | $0.893 | $10.86 |
| 8 hours | 0.2 kWh | $0.034 | $1.02 | $12.41 |
| 9 hours | 0.23 kWh | $0.038 | $1.15 | $13.96 |
| 10 hours | 0.25 kWh | $0.043 | $1.28 | $15.51 |
| 11 hours | 0.28 kWh | $0.047 | $1.40 | $17.06 |
| 12 hours | 0.3 kWh | $0.051 | $1.53 | $18.62 |
| 13 hours | 0.33 kWh | $0.055 | $1.66 | $20.17 |
| 14 hours | 0.35 kWh | $0.06 | $1.79 | $21.72 |
| 15 hours | 0.38 kWh | $0.064 | $1.91 | $23.27 |
| 16 hours | 0.4 kWh | $0.068 | $2.04 | $24.82 |
| 17 hours | 0.43 kWh | $0.072 | $2.17 | $26.37 |
| 18 hours | 0.45 kWh | $0.077 | $2.30 | $27.92 |
| 19 hours | 0.48 kWh | $0.081 | $2.42 | $29.47 |
| 20 hours | 0.5 kWh | $0.085 | $2.55 | $31.03 |
| 21 hours | 0.53 kWh | $0.089 | $2.68 | $32.58 |
| 22 hours | 0.55 kWh | $0.094 | $2.81 | $34.13 |
| 23 hours | 0.58 kWh | $0.098 | $2.93 | $35.68 |
| 24 hours | 0.6 kWh | $0.102 | $3.06 | $37.23 |
How we worked it out
- Energy per hour: 25 W ÷ 1,000 = 0.03 kWh
- Cost per hour: 0.03 kWh × $0.17 = $0.004
- Cost per day: × 8 hours = $0.034
- Month and year: × 30 days = $1.02, × 365 days = $12.41
Ohio electricity prices
Ohio pays about $0.17 per kWh, which is 3% lower than the US average of $0.175. The same router modem combo would cost $1.05 a month at the national average.
What it costs in different places
Same 25-watt router modem combo, 8 hours a day. Only the local electricity rate changes.
| Place | Rate per kWh | Cost per month |
|---|---|---|
| United States | $0.175 | $1.05 |
| California | $0.32 | $1.92 |
| Texas | $0.155 | $0.93 |
| New York | $0.25 | $1.50 |
| Florida | $0.155 | $0.93 |
| Illinois | $0.17 | $1.02 |
| Pennsylvania | $0.18 | $1.08 |
| Ohio | $0.17 | $1.02 |
| Washington | $0.115 | $0.69 |
About router modem combo running costs
Combined modem-router units usually stay on all day. Their wattage is small, but a 24-hour schedule matters to the yearly total.
Typical sizes: 8 W, 15 W, 25 W, 35 W.
How to spend less: Use the provider’s rated power as a guide and avoid frequent unnecessary restarts.
What this estimate assumes
- The appliance draws its full stated wattage the whole time it is on. Real units with a thermostat cycle off and cost less.
- Wattage is the typical label value, not a measured value. Check the label on your own appliance.
- The rate is an approximate residential average in Ohio. Your bill may include fixed fees, tiers or time-of-use pricing. Edit the rate above.
- A month is 30 days and a year is 365 days.