They Are Billions Wiki
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In-game Description[]

"Generates energy for the colony."

General Information[]

Advanced Mills can be directly built or upgraded from a Mill.

Strategy and Tips[]

  • Advanced Mills (and normal Mills) have to be separated by at least 4 tiles.
  • This means that in practice, new mills cannot be placed in a 4 tile zone around already existing mill, effectively creating a 10x10 "no-mill"-zone.
  • Thus, it is most efficient to build them diagonally parallel to each other.
  • Advanced Mills are more space and worker efficient than their basic Mill counterparts, but are a serious drain on an economy due to their high maintenance and build cost. Excessive use of Advanced mills will bring a less advanced economy completely to a halt. As such, they are generally not used until further expansion is basically impossible.
  • Upgrading a mill takes less than one tick, making it the fastest way to acquire energy.

See also[]

Comparison of efficiency of different energy sources

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