XEU UFO Power Source.png

UFO Power Source is an alien artifact in XCOM: Enemy Unknown.

In-Game Description[]

This power cell is apparently capable of generating enough energy to power the alien craft and its requisite systems. The Elerium core must be the key to its amazing efficiency.

Gray Market description


UFO Power Sources can be recovered following successful UFO landing and crash site missions involving all classes of alien ships. Small Scouts yield a maximum of one power source, while larger ships can yield up to four.

Gray Market Value[]



Engineering Projects Research Projects XCOM Facilities
Firestorm  1   UFO Power Source  1   Elerium Generator  2  


  • UFO Power Sources are highly volatile and can be damaged by simple gunfire. Be wary of allowing a firefight to break out in the vicinity if you wish to claim them intact.
  • Equipping Interceptors with an EMP Cannon improves the odds of finding an undamaged power source at the ensuing crash site.
  • An exploding UFO Power Source deals ten points of damage to those nearby.
  • Special alien ships like the Overseer support dual-constructed power sources.


  • The original UFO: Enemy Unknown (1994) states that UFO Power Sources are anti-matter reactors which use the transuranic element known as Elerium to generate powerful gravity waves, as an exotic form of propulsion. This closely resembles statements made by a UFO researcher who claims to have examined multiple alien spacecraft.
    • The Engineering description states that satellites "detect the unique gravitational distortions caused by alien craft in flight," suggesting that this is the case in XCOM: Enemy Unknown (2012) as well.