BitcoinBrothers out of Germany claimed in November this year to have an ASIC based on a 16nm 3D finFET and have plans to unleash 300-400 PH onto the network in Q1 2015. They also claim each of their 6 PH machines will consume 0.9 MW. So using your initial assumption, it appears they are poised take a little more than 50% of the network (assuming they add 300 PH) using only 45 MW.
I haven't dug very deeply into this claim but they seem to be echoing the claims of KNCminer as far as the 16nm 3D finFET based ASIC. I haven't seen power consumption estimates from KNC however.
Not sure where (electricity rate) they plan to drop their bomb, but the numbers you have posted put their power consumption at 0.15W/G.
Official claims we have (also from my internal report):
- Spondoolies Tech 0.05W/G mid 2015
- KnCMiner 16nm 0.07W/G early 2015
- Cointerra 16nm 5X (?) Q1 2015 (5X refers to their TerraMiner IV I guess)
- Bitfury sub-0.1J/G mid-year 2015
Not sure what to put on the Chinese ASIC manufacturers when it comes to official claims (Bitmain, Avalon, InnoSilicon, who else is significant or still in business?).