A Entropic Power Module (EPM) is a Kryptonian device that provides energy by existing in an initial state of low entropy – low disorder – and continually going to a more disordered state, which drives anything that the Module is connected to. The power of a single EPM is capable to run ten-thousand New York-sized cities for a year. Thus making the EPM the basis for all Kryptonian power-systems.[1]


  1. The Last Son, Book Two: Reckonings, "War Wounds"

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