If your power is over $0.10 I would not recommend getting into the Bitcoin mining business, at least not for now.

Antminer S5 can get you 1.15 TH/s with about 600W of power usage. Your power costs would be about $56.00 per month and your monthly profit would be only $25.00 based on the current Bitcoin rate and difficulty. This month the difficulty is expected to increase, so your profit would even decrease.

You can use the profit calculator here -  http://www.coinwarz.com/calculators/bitcoin-mining-calculator/?h=1155.00&p=600.00&pc=0.13&pf=0.00&d=47610564513.47130000&r=25.00000000&er=221.98970000&hc=400

You probably won't even get the money back for the hardware you would spend.