Systems and methods for controlling the charge of an energy storage device include determining an estimated energy production prediction for an energy source from a present time to a target time by which an energy storage device is desired to reach a top of charge (TOC) energy level when being charged by the energy source. An available amount of energy for storage at the energy storage device if the energy storage device is charged from the energy source at a first charge rate from the present time until the target time is determined. A present charge rate for the energy storage device is controlled to be the first charge rate when the available amount of energy is less than the energy storage capacity of the energy storage device and to be a second charge rate less than the first charge rate when otherwise.