An energy provision system and operation method for a commercial vehicle equipped with the energy provision system are disclosed. The energy provision system includes: a first energy provision unit that is configured to provide energy and includes a first energy provision control unit configured to surveil operation parameters of the first energy provision unit; a second energy provision unit that is configured to store energy and includes a second energy provision control unit configured to surveil operation parameters of the second energy provision unit; and an internal communication unit that is configured to provide data communication exclusively within the energy provision system.