An elevator system, comprising: a plurality of elevator cars (22, 24, 60, 62, 80, 82); a plurality of elevator machines (42, 44, 70, 72, 90, 92), respectively associated with the elevator cars (22, 24, 60, 62, 80, 82) to selectively cause movement of the associated elevator car, at least some of the elevator machines respectively operating in a first mode including consuming power and in a second mode including generating power; a power source that provides power for elevator car movement, the power source having a power output threshold and a power intake threshold, wherein the power output threshold corresponds to a maximum power capacity of the power source and the power intake threshold corresponds to a maximum amount of power that can be taken in by the power source from the elevator machines that are operating in the second mode; and at least one controller that is configured to: determine when the power source is providing power for the elevator system, characterized in that the at least one controller is further configured to: dynamically adjust how the plurality of machines (42, 44, 70, 72, 90, 92) move the elevator cars (22, 24, 60, 62, 80, 82) to maximize a number of the plurality of elevator cars being used to move passengers while keeping power consumption by the elevator system below the power output threshold and keeping power generation by the elevator system below the power intake threshold. a plurality of elevator cars (22, 24, 60, 62, 80, 82); a plurality of elevator machines (42, 44, 70, 72, 90, 92), respectively associated with the elevator cars (22, 24, 60, 62, 80, 82) to selectively cause movement of the associated elevator car, at least some of the elevator machines respectively operating in a first mode including consuming power and in a second mode including generating power; a power source that provides power for elevator car movement, the power source having a power output threshold and a power intake threshold, wherein the power output threshold corresponds to a maximum power capacity of the power source and the power intake threshold corresponds to a maximum amount of power that can be taken in by the power source from the elevator machines that are operating in the second mode; and at least one controller that is configured to: determine when the power source is providing power for the elevator system, characterized in that the at least one controller is further configured to: dynamically adjust how the plurality of machines (42, 44, 70, 72, 90, 92) move the elevator cars (22, 24, 60, 62, 80, 82) to maximize a number of the plurality of elevator cars being used to move passengers while keeping power consumption by the elevator system below the power output threshold and keeping power generation by the elevator system below the power intake threshold. determine when the power source is providing power for the elevator system, characterized in that the at least one controller is further configured to: dynamically adjust how the plurality of machines (42, 44, 70, 72, 90, 92) move the elevator cars (22, 24, 60, 62, 80, 82) to maximize a number of the plurality of elevator cars being used to move passengers while keeping power consumption by the elevator system below the power output threshold and keeping power generation by the elevator system below the power intake threshold.