- Star Trek: The Motion Picture
- Star Trek II: The Wrath of Khan
- Star Trek III: The Search for Spock
- Star Trek IV: The Voyage Home
- Star Trek V: The Final Frontier
- Star Trek VI: The Undiscovered Country
- Star Trek Generations
An engineering component of the warp drive that is a vital part for controlling power conversion levels. Commander Donald Kaplan suggested to Commander La Forge that he might achieve a higher level of performance by "cleaning his plasma grid once in a while."