Cost to Run a 300-watt refrigerator for 11 hours
Running a 300-watt refrigerator for 11 hours uses 3.3 kWh and costs $0.578 at $0.175/kWh. Do that every day and it adds up to $17.33 a month.
Calculate your own cost
- Per hour
- $0.0530.3 kWh
- Per day
- $0.5783.3 kWh
- Per week
- $4.0423.1 kWh
- Per month (30 days)
- $17.3399 kWh
- Per year
- $210.791,205 kWh
Formula: watts ÷ 1,000 × hours × rate. Edit any box and every number updates instantly.
People also ask
How much does a 300-watt refrigerator cost per hour?
At $0.175/kWh, it costs $0.053 per hour. The maths: 300 W ÷ 1,000 = 0.3 kWh per hour, × $0.175 = $0.053.
How much does it cost per month?
Used 11 hours a day for 30 days, it costs about $17.33 per month and uses 99 kWh. Change the hours in the calculator above to match how you use it.
How many kWh does it use?
3.3 kWh per day, 99 kWh per month and 1,205 kWh per year at 11 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?
Keep it away from the oven, keep the door seals clean and set it to 37°F (3°C). 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 $9.90 and at 30¢ it is $29.70. Find your rate on your bill (total cost ÷ kWh used) and type it into the calculator.
Cost by hours of use
| Used per day | Energy per day | Cost per day | Cost per month | Cost per year |
|---|---|---|---|---|
| 1 hour | 0.3 kWh | $0.053 | $1.58 | $19.16 |
| 2 hours | 0.6 kWh | $0.105 | $3.15 | $38.33 |
| 3 hours | 0.9 kWh | $0.158 | $4.73 | $57.49 |
| 4 hours | 1.2 kWh | $0.21 | $6.30 | $76.65 |
| 5 hours | 1.5 kWh | $0.263 | $7.88 | $95.81 |
| 6 hours | 1.8 kWh | $0.315 | $9.45 | $114.98 |
| 7 hours | 2.1 kWh | $0.368 | $11.03 | $134.14 |
| 8 hours | 2.4 kWh | $0.42 | $12.60 | $153.30 |
| 9 hours | 2.7 kWh | $0.473 | $14.18 | $172.46 |
| 10 hours | 3 kWh | $0.525 | $15.75 | $191.63 |
| 11 hours | 3.3 kWh | $0.578 | $17.33 | $210.79 |
| 12 hours | 3.6 kWh | $0.63 | $18.90 | $229.95 |
| 13 hours | 3.9 kWh | $0.683 | $20.48 | $249.11 |
| 14 hours | 4.2 kWh | $0.735 | $22.05 | $268.28 |
| 15 hours | 4.5 kWh | $0.788 | $23.63 | $287.44 |
| 16 hours | 4.8 kWh | $0.84 | $25.20 | $306.60 |
| 17 hours | 5.1 kWh | $0.893 | $26.78 | $325.76 |
| 18 hours | 5.4 kWh | $0.945 | $28.35 | $344.93 |
| 19 hours | 5.7 kWh | $0.998 | $29.93 | $364.09 |
| 20 hours | 6 kWh | $1.05 | $31.50 | $383.25 |
| 21 hours | 6.3 kWh | $1.10 | $33.08 | $402.41 |
| 22 hours | 6.6 kWh | $1.16 | $34.65 | $421.58 |
| 23 hours | 6.9 kWh | $1.21 | $36.23 | $440.74 |
| 24 hours | 7.2 kWh | $1.26 | $37.80 | $459.90 |
How we worked it out
- Energy per hour: 300 W ÷ 1,000 = 0.3 kWh
- Cost per hour: 0.3 kWh × $0.175 = $0.053
- Cost per day: × 11 hours = $0.578
- Month and year: × 30 days = $17.33, × 365 days = $210.79
What it costs in different places
Same 300-watt refrigerator, 11 hours a day. Only the local electricity rate changes.
| Place | Rate per kWh | Cost per month |
|---|---|---|
| United States | $0.175 | $17.33 |
| California | $0.32 | $31.68 |
| Texas | $0.155 | $15.35 |
| New York | $0.25 | $24.75 |
| Florida | $0.155 | $15.35 |
| Illinois | $0.17 | $16.83 |
| Pennsylvania | $0.18 | $17.82 |
| Ohio | $0.17 | $16.83 |
| Washington | $0.115 | $11.39 |
About refrigerator running costs
A refrigerator is rated at its compressor power, but the compressor only runs about a third of the day. Annual kWh on the energy label is the best guide.
Typical sizes: 100 W, 150 W, 200 W, 300 W.
How to spend less: Keep it away from the oven, keep the door seals clean and set it to 37°F (3°C).
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. 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.