It seems like they've just made a board to route all the NAND modules' pins to a connector, and then another board to go back again. There don't seem to be any electronics on the boards other than the modules and a few resistors.
But the NT (where the cable is running to) isn't connected to the Australian grid (which is effectively the East Coast, SA, and Tasmania), and there are no plans to do so. The Darwin grid is currently ~4-10% renewables depending on the day.
The strangest part of this is that the cable will be run to Darwin, which isn't connected to Australia's national grid.
So the city's electrical grid will be connected to a foreign country 4,300km away before it's connected to the Australian grid (approx. 2,100km away by road).
