You could have it easier.
http://thenodepole.com/2014/02/06/knc-miner-to-build-10-mw-datacenter-in-the-node-pole/


10MW = 10.000.000W => 1W per GH/s => 10.000.000 GH/s = 10.000 TH/s = 10 PH/s

3TH/s*3Batches*1200units=10.800 TH/s = 10.8 PH/s.
Those 800TH/s (~260 Neptunes) are whether canceled or they have somewhere else (current location?) ~125*4 boards (28nm) available.

Enough to cover all 3 batches I'd say.
And that's maybe the reason why the hosting is limited to 3TH/s even with the announcement they made 11% improvement on the chip-design.

*edit:
Can remember that there was some info about another 2 locations they will build as soon as this one has been finished.