Alright, new project, a nuclear fusion power chain for pak64/128. To include:
Water desalination plant - produces water and salt, located on coastline
Electrolysis & deuterium seperation plant - produces hydrogen, oxygen and deuterium from water.
Fusion reactor - produces power and helium from deuterium (D-D type reactor).
Gas retailer - accepts oxygen & helium for retail.
Hydrogen - this will go to some sort of hydrogen fuel station, or something like that.
There will, of course, be a selection of vehicles for transporting all the relavent materials around, some sort of generic pressurised gas transport vessel, tankers for water, trucks/wagons for salt etc. The salt I don't know what to do with, some other retailer probably.
The basic structure of the buildings will be done in Blender (which I have decided it is time I learnt how to use), then they'll be touched up for each pak seperately so that each looks good...
Here's what the fusion reactor looks like so far.