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I'm in for about an extra $33.00 electric a month on average.
I am running 525 WATTS with the monitor turned off at $0.089 $kWh
Here is the calculator I use

That is very close to my rates unless I want to lock in the price for longer terms and then I can drive it down to about 6.9 cents per kWh. Never seems worth it to me, but if I start mining I will seriously look into that too. Some shady electric providers out there.

Thanks for the info.