I tried to build some reasonable setup with 5 planets with following roles:
- 2 planets harvest first P0 and produce first P1 out of it
- 2 planets harvest second P0 and produce second P1 out of it
- 1 planet is factory planet where both P1s are converted to P2
Harvesting single P1 sounds very good as there is no need to search for spot which is close to both P0s and many extractors can be run in parallel.
But it turned out that I could not find good setup for factory planet.
I was able to fit maximum 10 Advanced Industry Facilities (and supporting infrastructure of Launchpads, links etc.).
So the total P2 output from 5 planets would be exactly the same (10 AIFs on single planet) as with setup where each planet produces P0->P2 with 2xAIF/planet.
P2 production is scaled by number of factories and time of cycle, not amount of P0 resources harvested so 10 AIFs will produce always same amount of P2 regardless if they are concentrated on single planet or spread at 5 planets.
Additionally this setup would require constant work and presence at the solar system where planets are located almost non-stop because factory planet would require continuous deliveries from harvesting planets to keep the production running.
- less storage space on factory planet => more frequent hauling and more power grid for factories
- more power grid for factories => increased demand for P1 => more frequent hauling
Which equals even more frequent hauling.
Last but also important this setup requires very low tax POCOs on all planets and all planets must be located in same or neighbourhood systems to avoid long trips with Epithals.
So finally I gave up because with passive setup I have 5 self-sufficient planets, still with 10xAIF and all I have to do is to reset extractors every couple of days which I can do remotely, and show up just to collect ready P2 every couple of weeks.
Maybe there is some clever design for factory planet or things will calculate differently with Command Center Upgrades V…