DescriptionThe HPC community faces considerable constraints on power and energy of HPC installations. A standardized, vendor-neutral API for power measurement and control is needed for portable solutions to these issues at the various layers of the software stack. In this BoF, we discuss the Power API and Redfish; APIs for measurement and control of power/energy on large systems. The BoF will introduce newcomers to these efforts, differentiate the goals of the two APIs and discuss inter-operability. An interactive panel discussion with experts from involved organizations will facilitate discussions between both API communities with ample time for audience questions and comments.