Is there any definitive info on what mixing asset economies produces? E.g. Extraction + Refinery etc? Not sure if adding another asset economy would be counter productive.
It's not possible to precalculate exactly what you'd get, but the principle of mixed economies for colonisation projects doesn't seem to differ for how it worked for NPCs.
A rough model (which may not be
exactly what's used internally, but close enough).
- work out the baseline economic productivity of the station
- consider each economy separately, according to its "proportion" (as proportions of the baseline, not as a percentage)
- work out that economy's imports and exports as if it was a single economy of that "proportion"
- then add the economies together. Where one economy imports something that the other exports, those cancel out (there's a "dead zone" in the middle where they cancel out even if they're not exactly zero)
So for Extraction + Refinery
- none of the Refinery exports
except Explosives are consumed by Extraction, so they should be safe and continue being exported in the hybrid
- a lot of the Extraction exports are consumed by Refinery, so at this point it's going to depend on whether the Extraction exports more than the Refinery imports [1]
- Gold and Silver are exported by both, so those export levels should just be added together
- most of their normal imports are going to be fine (though things like Mineral Extractors or Advanced Catalysers which are exclusive to one or the other will have lower relative import levels than things like Power Generators which both halves want)
[1] This is where it becomes impossible to calculate in advance - if you take Gallite, for example, that seems to be exported at between 5-44 per economic unit, and imported at between 10-100 per economic unit [2], and you won't be able to tell where on that range it's going to fall without building the actual station. So
on average a 50-50 extraction/refinery split almost certainly won't export Gallite (though it's not completely impossible) and might not import it either (though that's certainly possible). But a 20-80 extraction/refinery split, on the other hand, definitely won't be exporting Gallite, but has a good chance of importing almost as much as a pure Refinery might.
And this gets complicated further if you then have BGS states apply: in a Boom state Gallite production is increased by 80%, but Gallite consumption only increases by 40%. So you might have a station which doesn't normally produce Gallite, but does have a small bit on the market in Boom. Or you might have a station which normally consumes a small amount of Gallite, but stops doing so in Boom.
[2] Don't worry too much about what an "economic unit" is in this context - just use the proportion data to estimate how many you'll have of one
relative to the other, rather than how many you have in an absolute sense.