hi kira,
thanks for the advice.
its not about the cost efficiency i care, but about the upkeep-costs.
Perhaps its enough to set the drain to ~500kw or 1MW, so that one has really to think about IF and where it is helpful to use loaders, instead of spamming all stations and assemblers with them.
Just setting up the costs is something that wont hurt you after having sent 20k rockets - but having 1000loaders draining 1 MW each... ouch - you would have to constantly expand your nuclear plant...