Well, I don't have a large facility, but I have 240VAC @ 200A capacity... metered separate from the house.
I have been running my mining ops as a small business for some time now. I missed the big hoopala with the $1100 BTC. I got into mining when it was around $750 BTC - started mining with the Antminer U1's, then BTC Garden blades, and Block Erupter Cubes, mined with a pile of BFL SC60's, Avalon 1's, then Avalon 2's, had a splattering of Antminer S1's, then got Antminer S2's, I skipped the S3/S4, but then picked up some S5's. I'm not really new to mining, but I have not been paying attention to who's selling what and what is available. It has been too confusing and muddy with scams and companies that seem to only be around for a couple months then poof, gone.
I've been looking at the Antminer S7. ( I still need to calculate ROI with the S7's), BUT the S7... that's like hobbyist / consumer grade. There's better profitability with the more commercial grade SpondooliesTech SP50, but with no way of calculating out ROI due to lack of price and their website saying -out of stock- .... it becomes a problem to see if SP50s would be feasible to try and obtain. It must have a decent ROI if large farms are buying them. ... or are they? Who's running them?
What are some of the other "commercial" mining equipment manufacturers??? I would like to see what is out there.
Dave
Very simple these Days, be they run in or new, Bitmain is the only game in Town unless you have a very large mining facility.
Rich