| Building Overview | Game Strategies | History |
The Refinery is a civilian building and becomes available in the 
Industrial Age. It must be built within a city's economic radius and increases the overall production of 
Oil by 33%.
The effects of multiple Refineries stack, so two Refineries add 66% to the total base production, three Refineries add 99%, and so on. Oil production from rare resources (Aluminum, Rubber, Titanium and Uranium) is affected by the Refinery as well (undocumented/hidden).
Unlike with the other production enhancing buildings, there are no technologies available for research at the Refinery.
Nation powers[]
- The Indian Power of Majesty: Refineries do not rise in cost.
- The Maya Power of Architecture: Refineries have +25% hit points, are built 20% faster and costs 25% less
Timber. - The Russian Power of the Motherland: (undocumented/hidden) Can build Refineries without researching Science 6 (Electronics) first.
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