A hydraulic system comprising: a bi-directional hydraulic pump having a first pump port and a second pump port; an electric motor/generator mechanically coupled to the hydraulic pump a hydraulic pressure source; a first hydraulic flow path for fluidly connecting the hydraulic pressure source to the first pump port; a first valve positioned along the first hydraulic flow path for opening the first hydraulic flow path such that fluid communication is provided between the first pump port and the hydraulic pressure source and for closing the first hydraulic flow path such that fluid communication is blocked between the hydraulic pressure source and the first pump port; a second hydraulic flow path for fluidly connecting the hydraulic pressure source to the second pump port; a second valve positioned along the second hydraulic flow path for opening the second hydraulic flow path such that fluid communication is provided between the second pump port and the hydraulic pressure source and for closing the second hydraulic flow path such that fluid communication is blocked between the hydraulic pressure source and the second pump port; first and second actuator ports (120, 122); a third hydraulic flow path for fluidly connecting the first pump port to the first actuator port; a third valve positioned along the third hydraulic flow path, the third valve having a first valve position in which the third hydraulic flow path is open between the first actuator port and the first pump port, a second valve position in which the third hydraulic flow path is blocked and flow through a portion of the third hydraulic flow path located between the third valve and the first actuator port is hydraulically locked, and a third valve position in which fluid communication between the first pump port and the first actuator port through the third hydraulic flow path is interrupted and the first actuator port is fluidly connectable to tank; a fourth hydraulic flow path for fluidly connecting the second pump port to the second actuator port; a fourth valve positioned along the fourth hydraulic flow path, the fourth valve having a first valve position in which the fourth hydraulic flow path is open between the second actuator port and the second pump port, a second valve position in which the fourth hydraulic flow path is blocked and flow through a portion of the fourth hydraulic flow path located between the fourth valve and the second actuator port is hydraulically locked, and a third valve position in which fluid communication between the second pump port and the second actuator port through the fourth hydraulic flow path is interrupted and the second actuator port is fluidly connectable to tank; and a pump charge circuit for providing pump charge flow to the third and fourth hydraulic flow paths. a bi-directional hydraulic pump having a first pump port and a second pump port; an electric motor/generator mechanically coupled to the hydraulic pump a hydraulic pressure source; a first hydraulic flow path for fluidly connecting the hydraulic pressure source to the first pump port; a first valve positioned along the first hydraulic flow path for opening the first hydraulic flow path such that fluid communication is provided between the first pump port and the hydraulic pressure source and for closing the first hydraulic flow path such that fluid communication is blocked between the hydraulic pressure source and the first pump port; a second hydraulic flow path for fluidly connecting the hydraulic pressure source to the second pump port; a second valve positioned along the second hydraulic flow path for opening the second hydraulic flow path such that fluid communication is provided between the second pump port and the hydraulic pressure source and for closing the second hydraulic flow path such that fluid communication is blocked between the hydraulic pressure source and the second pump port; first and second actuator ports (120, 122); a third hydraulic flow path for fluidly connecting the first pump port to the first actuator port; a third valve positioned along the third hydraulic flow path, the third valve having a first valve position in which the third hydraulic flow path is open between the first actuator port and the first pump port, a second valve position in which the third hydraulic flow path is blocked and flow through a portion of the third hydraulic flow path located between the third valve and the first actuator port is hydraulically locked, and a third valve position in which fluid communication between the first pump port and the first actuator port through the third hydraulic flow path is interrupted and the first actuator port is fluidly connectable to tank; a fourth hydraulic flow path for fluidly connecting the second pump port to the second actuator port; a fourth valve positioned along the fourth hydraulic flow path, the fourth valve having a first valve position in which the fourth hydraulic flow path is open between the second actuator port and the second pump port, a second valve position in which the fourth hydraulic flow path is blocked and flow through a portion of the fourth hydraulic flow path located between the fourth valve and the second actuator port is hydraulically locked, and a third valve position in which fluid communication between the second pump port and the second actuator port through the fourth hydraulic flow path is interrupted and the second actuator port is fluidly connectable to tank; and a pump charge circuit for providing pump charge flow to the third and fourth hydraulic flow paths.