Abstract: An integrated building design, control, and operation system using a high efficiency fault managed power microgrid that includes a first tier building power converter system that receives input power from one or more primary power sources and converts the received primary power into one or more fault managed power outputs; a plurality of loads, where each load is coupled to receive one of the fault managed power outputs; and a main building controller in communication with the first tier building converter system and configured to control the operation of the first tier power converter to initiate the provision of fault managed power to the plurality of loads and/or to adjust the power level provided to such loads and/or to monitor the operating characteristics of the outputs