Abstract: A method, non-transitory computer readable medium, and apparatus for assessing efficiency of a data center includes querying, based on a system management protocol, each of a plurality of information technology (IT) devices to obtain utilization information. A power rating value is obtained for each of the plurality of IT devices. An IT power consumption value for the plurality of IT devices is generated based on the utilization information for the plurality of IT devices and the power rating values. A value for at least one efficiency metric is generated and output based on the IT power consumption value.