A system includes a DC to DC converter coupled with a load, a power source bus coupled with an input of the DC to DC converter, a capacitor coupled in parallel across an output of the DC to DC converter and a controller. The controller may dynamically adjust a bus voltage set point of a bus voltage on the output of the DC to DC converter up or down to prepare for supply of the bus voltage and energy stored in the capacitor to an anticipated load event. The load event may have a load step change that occurs in less than five milliseconds and is greater than about eighty or eighty-five percent of a rated output of the DC to DC converter.