Yes, it's Mekanism thing. Also the max sixe it's 18x18.Googling suggests that's a mekanism thing. Confirm?
I've never touched mekanism.
Mekanism it's a pretty cool mod, it has a Fusion Reactor that produces lots of power and steam, when it's actively cooled. You should take a look at it.
Anyway both the Fusion Reactor and the Ore Quintupling Mekanism has require lots lf infrastructure(that's how you spell this word, right?).