I think Canada is the best alternative other than China.
Low rate, natural cooling etc.
I was contacted by Chinese medium-size mining operators. Let me know if you have connections.
Canada isn't half bad in most cases, especially if you can get connected to a grid which is powered by hydro or some other renewable power within the eastern provinces, provided that they can actually afford to get you a decent rate and don't overcharge, which seems to be happening a lot these days. Maybe it's not so cheap after all eh?
The natural cooling aspect also depends on your location. In some places it will feel like a bloody desert and others will have it cold a large portion of the year. The only big thing you'd need to do at that point would be to keep air moving (which isn't that hard to do).
There was also a large mining farm over in the mining subforum not long ago that I remember was being set up in Canada, so there might be some value in considering the fact people have already done what you're considering.
As for contacts I don't know what you need so I can't tell you if I actually have any.