The Stocker increases how many resources a planet can hold before reaching its storage limit. It is a capacity bonus rather than a production bonus.
What does each level provide?
Stocker scales by level: +100% storage capacity per level. The relevant resource storage limits mechanic reads this bonus when the server calculates the corresponding action or account state.
What does this bonus combine with?
The Stocker modifies storage capacity separately from the levels of Metal Storage, Crystal Storage and Deuterium Tank. The final result can therefore depend on the Officer level together with technologies, buildings, active events and the current universe settings.
What does this Officer not change?
It does not create additional resources or increase production speed; it only raises how much a planet can hold before the storage cap is reached. This distinction matters because similar-looking statistics in Inter-War do not necessarily use the same modifier.
How are new levels purchased?
Buying another level costs Dark Matter. The general formula is (current level + 1) × (2000 × Officer factor). The factor, requirements and maximum level come from the active universe catalog.
When is the bonus most noticeable?
It is most useful with high production, long periods away from the game, or when saving for very expensive buildings and research that require a large balance. Do not assume one universal maximum level: worlds can use different configuration, so the Officers panel is the current source of truth for cost and level cap.
How does the Stocker help with large purchases?
Higher capacity lets you accumulate and hold a larger balance on one planet without spending resources immediately. This is especially useful before very expensive research, buildings or production. The Stocker changes how you can save and stage resources, but it does not increase the rate at which resources enter the account.
Related FAQ: How does the Geologist and resource-production bonus work? · How does the Constructor and building-time reduction work?