Hello team, I live in the Dominican Republic and I'm planing to buy at least 3 Antiminer S7, but I'm worry about the power consumption. Only one of those can suck almost 970 KWh (around USD$195 at current exchange) in a month.

Which alternatives do you recommend that I need to implement to keep my electrical bill low or, at least, to gain USD$50 per month?

I was looking for using green power sources (solar and wind), but the initial investment it's ridiculous: I'll need more than USD$10,000 just for a few miners.