A bit early to tell, but I think my first order of wafers is going to be 30 PetaHash = 30,000,000 GH, by the end of next year it certainly be in 1,000 PH range, god only know what Knc/Kcn will come up with
How much total power do You need for the 30 / 1000 PH ? Where do You think You can get this power ?
Most data centers I know are limited by power.
30PH would use 60-125MWh, I would not be running it all for my customers, they will be running most of it themselves.
Sabey B1,B3 77 MWh each, and they have more sites and there many more companies
US electricity use for data centers from the EPA report to Congress ~90,000,000 MWh in 2012
http://www.datacenterknowledge.com/archives/2008/04/04/microsofts-198-megawatts-of-motivation/