Linuxluver:

 

 

 

They also have to locate them where there is electrical infrastructure sufficient to power them. 

The Superchargers in Hamilton have a couple of fairly large - what I assume - are battery storage units...so they can deliver 120kw DC to a Tesla while charging the battery storage at 50kwDC (or 63kw - whatever is locally available). 

They don't install this level of power reticulation by the road side in NZ. That limit the selection for locations........unless you want to spend a huge sum of money building a new high tension power network to random roadside locations.  NZ isn't that well wired. :-) 

 

I agreed regarding electrical capacity. The supercharger installation at the base would need around 400 Amps of three phase, the chargers nameplates recommend 500A of breaker capacity to feed it.

I think you are misidentifying the boxes at hamilton (I don't see any battery storage).

The way I see it is that the box on the left of the above photo is some kind of distribution board. The matching boxes at the rear are the two charges. Their nameplates are below:

I didn't take any photo's, but they have some seriously large cooling fan exhaust at the rear of the units.