Is planetary building modifier for that planet only?

[Kryndude]

Or can I build research institutes on every planets to stack empire wide modifier?

 

[sillyrobot]

All the +15% production buildings affect the colony only.

 

[essi2]

I don't know if any of the new buildings have Empire modifiers, but the tool tip distinguishes between Planet modifiers and Empire modifiers

 

[Kryndude]

I don't know if any of the new buildings have Empire modifiers, but the tool tip distinguishes between Planet modifiers and Empire modifiers

The tooltip just says 'Researchers Output +15%' and that's it so it's kinda confusing. I assumed it'd be planet only but asked just in case. Thank you.