[quote author=klondike_bar link=topic=417159.msg6946955#msg6946955 date=1401104164
your power cost is almost 3x what i pay in Ontario, Canada ($0.15/kwh CAD). thats the most significant reason your calculatiuons show no profit
i live in ontario too... based on those figures if i run 8 ants with 650W PSU's am i to assume that my power bill will be $600 / mth?
each ant should be ~$43/mo with 0.15 electric rate or ~$350/mo for eight of them.
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This really depends on what kind of power supply you are using / what kind of efficiency you are getting at the wall; Bronze = 85% will mean 400 w = 460w draw at the wall and the best efficiency you can expect is 92% with a platinum rated psu. Generally speaking you can expect to pay $1.56 CAD a day / $48.21 a month for a single S1 at 0.15 cents per kw/h (I'm making the assuming you are OCing and getting near a power draw of 432w per device with a 92% efficiency).
The lowest any one has achieved so far is 140gh/s with a 166w draw from the wall with a platinum rated power supply; that'd be $0.60 a day and $18.53 per month / S1. That'd be $148.20 for your 8 ants Klondike albeit with a loss of 480 gh/s (8x60gh/s).