Expands storage so production chains waste fewer resources.
Take it after production is strong enough that storage limits are actually wasting value.
This is a situational priority in the Economy branch. Use it when the effect matches the next bottleneck in your current build path.
Do not rush storage while your real problem is low income, missing workers, or weak army timing.
If the choice is unclear, open the Tech Advisor and compare this node against your current goal and bottleneck.
Open Tech AdvisorThese research nodes usually support the same timing or solve the next bottleneck.