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Comment by sosuke | Hacker News Reader

I must assume I'm wrong in this calculation but 40 watts seems pretty cheap in cost. http://www.wolframalpha.com/input/?i=40+watts+in+kwh+per+mon... at a 3.3 cents per kWh rate is just under a $1 per month right? On the top tier of my local utility it would still be under $4 per month. http://www.austinenergy.com/wps/portal/ae/rates/residential-...

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1 W draws about 9 kW-hr/year, so for residential pricing of about 10 c/kW-hr, you get about 1 $/W-yr.

I think most Americans pay between $0.20 and $0.40 per kWh.

I am lucky though that here it is only $0.06. But in summer months it goes to $0.14 for every kWh over 600. Staying under 1000 kwh's a month is hard to do.

$.106 and free weekends.

Speaking of summer, if you're trying to cool the house with an air conditioner, you can multiply the effective wattage of the computer by 3.

True, that is a good point.

The average price of electricity in the US is $0.13. https://www.eia.gov/electricity/monthly/epm_table_grapher.cf... And you would have to be somewhere really remote to pay $0.40.

In California, PG&E has tiered pricing such that even a moderate user in the bay area will probably be paying a marginal rate of ~$0.35/kWh.

In the U.S. $0.20 per kWhr is a more common rate.

Those prices are an Alaska/Hawaii and New England thing. Everywhere else its pretty cheap.

http://www.eia.gov/electricity/state/

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