Hello rimbas,
I noticed that the substation as well as any modded electric poles are missing in the planner settings.
On another note, players are using the Oil Outpost Planner for fluid resources:
https://mods.factorio.com/mod/OilOutpostPlanner
It has some neat features I think would also neatly complement your mod:
- quality setting (per entity)
- (underground) pipe type
- beacon type
- heat pipe type (for Aquilo)