Synthetic Oil/Synthetic Materials Plants?

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I am a long time veteran of HOI2 and Arma. I am playing my first AOD game and had a question:

How do the Synthetic Oil/Synthetic Materials Plants work? Does it matter where you build them (e.g. in oil/rares rich provinces)? Do they increase in effectiveness like Rocket Test Sites? Are they worth it or is there a point of diminishing returns with them? Is there a Wiki article? Thanks!

 

[Blecky]

I am a long time veteran of HOI2 and Arma. I am playing my first AOD game and had a question:

How do the Synthetic Oil/Synthetic Materials Plants work? Does it matter where you build them (e.g. in oil/rares rich provinces)? Do they increase in effectiveness like Rocket Test Sites? Are they worth it or is there a point of diminishing returns with them? Is there a Wiki article? Thanks!

IIRC there´s no difference whether you build them in resource rich provinces or not. There is a difference, however, when you build them in high infra provinces. This will make them a little more effective. Effectiveness is further increased by researching the appropriate techs (there´s a tech tree for synthetics, too).

The more plants you build the higher the output. Don´t think there´s something like diminishing returns here, but I´m not sure. Operating those plants now costs money (apart from resources). Synthetics on their first level are VERY uneffective and cost a lot of money. You can adjust the spending slider in the production tab.