Cost to Run a 100-watt NAS server for 10 hours in California
Running a 100-watt NAS server for 10 hours uses 1 kWh and costs $0.32 at $0.32/kWh in California. Do that every day and it adds up to $9.60 a month.
Calculate your own cost
- Per hour
- $0.0320.1 kWh
- Per day
- $0.321 kWh
- Per week
- $2.247 kWh
- Per month (30 days)
- $9.6030 kWh
- Per year
- $116.80365 kWh
Formula: watts ÷ 1,000 × hours × rate. Edit any box and every number updates instantly.
People also ask
How much does a 100-watt NAS server cost per hour?
At $0.32/kWh, it costs $0.032 per hour. The maths: 100 W ÷ 1,000 = 0.1 kWh per hour, × $0.32 = $0.032.
How much does it cost per month?
Used 10 hours a day for 30 days, it costs about $9.60 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 10 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?
Enable drive sleep where suitable and use efficient drives for always-on storage. 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 $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 California
| Used per day | Energy per day | Cost per day | Cost per month | Cost per year |
|---|---|---|---|---|
| 1 hour | 0.1 kWh | $0.032 | $0.96 | $11.68 |
| 2 hours | 0.2 kWh | $0.064 | $1.92 | $23.36 |
| 3 hours | 0.3 kWh | $0.096 | $2.88 | $35.04 |
| 4 hours | 0.4 kWh | $0.128 | $3.84 | $46.72 |
| 5 hours | 0.5 kWh | $0.16 | $4.80 | $58.40 |
| 6 hours | 0.6 kWh | $0.192 | $5.76 | $70.08 |
| 7 hours | 0.7 kWh | $0.224 | $6.72 | $81.76 |
| 8 hours | 0.8 kWh | $0.256 | $7.68 | $93.44 |
| 9 hours | 0.9 kWh | $0.288 | $8.64 | $105.12 |
| 10 hours | 1 kWh | $0.32 | $9.60 | $116.80 |
| 11 hours | 1.1 kWh | $0.352 | $10.56 | $128.48 |
| 12 hours | 1.2 kWh | $0.384 | $11.52 | $140.16 |
| 13 hours | 1.3 kWh | $0.416 | $12.48 | $151.84 |
| 14 hours | 1.4 kWh | $0.448 | $13.44 | $163.52 |
| 15 hours | 1.5 kWh | $0.48 | $14.40 | $175.20 |
| 16 hours | 1.6 kWh | $0.512 | $15.36 | $186.88 |
| 17 hours | 1.7 kWh | $0.544 | $16.32 | $198.56 |
| 18 hours | 1.8 kWh | $0.576 | $17.28 | $210.24 |
| 19 hours | 1.9 kWh | $0.608 | $18.24 | $221.92 |
| 20 hours | 2 kWh | $0.64 | $19.20 | $233.60 |
| 21 hours | 2.1 kWh | $0.672 | $20.16 | $245.28 |
| 22 hours | 2.2 kWh | $0.704 | $21.12 | $256.96 |
| 23 hours | 2.3 kWh | $0.736 | $22.08 | $268.64 |
| 24 hours | 2.4 kWh | $0.768 | $23.04 | $280.32 |
How we worked it out
- Energy per hour: 100 W ÷ 1,000 = 0.1 kWh
- Cost per hour: 0.1 kWh × $0.32 = $0.032
- Cost per day: × 10 hours = $0.32
- Month and year: × 30 days = $9.60, × 365 days = $116.80
California electricity prices
California pays about $0.32 per kWh, which is 83% higher than the US average of $0.175. The same NAS server would cost $5.25 a month at the national average.
What it costs in different places
Same 100-watt NAS server, 10 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 |
About NAS server running costs
A network-attached storage server runs for long periods. Hard-drive count, workload and sleep settings change its average draw.
Typical sizes: 30 W, 60 W, 100 W, 150 W.
How to spend less: Enable drive sleep where suitable and use efficient drives for always-on storage.
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 California. 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.