Altitude (Basic)
From Alpha Centauri Wiki
The altitude of a land square affects the amount of Energy that can be produced by a Solar Collector or Echelon Mirror with more energy being produced at higher elevations.
Heavy Artillery receives a bonus when attacking from a sufficiently higher elevation then its target.
Altitude can be affected by earthquakes, volcanic eruptions, terraforming, as well as global warming and cooling.
See also Altitude (Advanced).
