Cost to Run a 200-watt appliance for 5 hours in Rhode Island
Running a 200-watt appliance for 5 hours uses 1 kWh and costs $0.29 at $0.29/kWh in Rhode Island. Do that every day and it adds up to $8.70 a month.
Calculate your own cost
- Per hour
- $0.0580.2 kWh
- Per day
- $0.291 kWh
- Per week
- $2.037 kWh
- Per month (30 days)
- $8.7030 kWh
- Per year
- $105.85365 kWh
Formula: watts ÷ 1,000 × hours × rate. Edit any box and every number updates instantly.
People also ask
How much does a 200-watt appliance cost per hour?
At $0.29/kWh, it costs $0.058 per hour. The maths: 200 W ÷ 1,000 = 0.2 kWh per hour, × $0.29 = $0.058.
How much does it cost per month?
Used 5 hours a day for 30 days, it costs about $8.70 per month and uses 30 kWh. Change the hours in the calculator above to match how you use it.
How many kWh does it use?
1 kWh per day, 30 kWh per month and 365 kWh per year at 5 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 it for fewer hours, switch to a lower-wattage model, and check whether your utility offers cheaper off-peak rates. Enter your own rate above to see the effect.
Does my electricity rate change the answer?
Yes, a lot. At 10¢ per kWh the monthly cost is $3.00 and at 30¢ it is $9.00. Find your rate on your bill (total cost ÷ kWh used) and type it into the calculator.
Cost by hours of use in Rhode Island
| Used per day | Energy per day | Cost per day | Cost per month | Cost per year |
|---|---|---|---|---|
| 1 hour | 0.2 kWh | $0.058 | $1.74 | $21.17 |
| 2 hours | 0.4 kWh | $0.116 | $3.48 | $42.34 |
| 3 hours | 0.6 kWh | $0.174 | $5.22 | $63.51 |
| 4 hours | 0.8 kWh | $0.232 | $6.96 | $84.68 |
| 5 hours | 1 kWh | $0.29 | $8.70 | $105.85 |
| 6 hours | 1.2 kWh | $0.348 | $10.44 | $127.02 |
| 7 hours | 1.4 kWh | $0.406 | $12.18 | $148.19 |
| 8 hours | 1.6 kWh | $0.464 | $13.92 | $169.36 |
| 9 hours | 1.8 kWh | $0.522 | $15.66 | $190.53 |
| 10 hours | 2 kWh | $0.58 | $17.40 | $211.70 |
| 11 hours | 2.2 kWh | $0.638 | $19.14 | $232.87 |
| 12 hours | 2.4 kWh | $0.696 | $20.88 | $254.04 |
| 13 hours | 2.6 kWh | $0.754 | $22.62 | $275.21 |
| 14 hours | 2.8 kWh | $0.812 | $24.36 | $296.38 |
| 15 hours | 3 kWh | $0.87 | $26.10 | $317.55 |
| 16 hours | 3.2 kWh | $0.928 | $27.84 | $338.72 |
| 17 hours | 3.4 kWh | $0.986 | $29.58 | $359.89 |
| 18 hours | 3.6 kWh | $1.04 | $31.32 | $381.06 |
| 19 hours | 3.8 kWh | $1.10 | $33.06 | $402.23 |
| 20 hours | 4 kWh | $1.16 | $34.80 | $423.40 |
| 21 hours | 4.2 kWh | $1.22 | $36.54 | $444.57 |
| 22 hours | 4.4 kWh | $1.28 | $38.28 | $465.74 |
| 23 hours | 4.6 kWh | $1.33 | $40.02 | $486.91 |
| 24 hours | 4.8 kWh | $1.39 | $41.76 | $508.08 |
How we worked it out
- Energy per hour: 200 W ÷ 1,000 = 0.2 kWh
- Cost per hour: 0.2 kWh × $0.29 = $0.058
- Cost per day: × 5 hours = $0.29
- Month and year: × 30 days = $8.70, × 365 days = $105.85
Rhode Island electricity prices
Rhode Island pays about $0.29 per kWh, which is 66% higher than the US average of $0.175. The same appliance would cost $5.25 a month at the national average.
What it costs in different places
Same 200-watt appliance, 5 hours a day. Only the local electricity rate changes.
| Place | Rate per kWh | Cost per month |
|---|---|---|
| United States | $0.175 | $5.25 |
| California | $0.32 | $9.60 |
| Texas | $0.155 | $4.65 |
| New York | $0.25 | $7.50 |
| Florida | $0.155 | $4.65 |
| Illinois | $0.17 | $5.10 |
| Pennsylvania | $0.18 | $5.40 |
| Ohio | $0.17 | $5.10 |
| Washington | $0.115 | $3.45 |
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 Rhode Island. 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.