How much will my router cost me monthly ?
- Thread starter MagicWolf
- Start date
Solution
Solandri
Illustrious
- Jan 4, 2012
- 4,919
- 98
- 39,240
Volts * Amps = Watts. So (assuming your router was drawing max power) 12 V * 1.5 A = 18 Watts. In reality, it'll draw less most of the time. A router is basically a mini computer (usually running Linux), and only runs its CPU at 100% when its heavily loaded (lots of connections, doing encryption, etc). If you want to measure exactly how much power your devices are using, buy something called a Kill-A-Watt.
If you pay the U.S. average of 11.5 cents/kWh for electricity, by a coincidence this works out to almost exactly $1 per Watt if a device is left on 24/7 for a year. So a 18 Watt router will cost you about $18 of electricity in a year if left on the entire time.
Scale the cost up or down based on the ratio of how much your electricity actually costs vs 11.5 cents/kWh. (Or if you want the math, $0.115/kWh * 8766 hours/year = $1008/kW per year = $1.008 per Watt-year. Insert your electricity price in place of $0.115/kWh.)
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