Systems and methods are disclosed that may be configured for transferring a fluid. The fluid may be transferred from a fluid source by which the fluid is under a first differential pressure to a container via use of a pressurizer that can increase the pressurization of the fluid to a second differential pressure. A controller may be used to coordinate operations of various components to allow the pressure generated by the pressurizer to be used to augment the pressure generated by the first differential pressure. Additional embodiments may include use of a mobile fueling unit that may facilitate transfer of the fluid from the container to a vehicle.