The power scaling challenge associated with Exascale systems is a well-known issue. In this talk, we provide an overview of the Global Extensible Open Power Manager (GEOPM). GEOPM is an open source power management runtime framework which is being contributed to the HPC community to foster collaboration on new power management runtime techniques to address Exascale power challenges or enhance performance and power efficiency on today’s systems as well. Through GEOPM’s plug-in extensible architecture, it enables rapid prototyping of new runtime algorithms. This talk will cover GEOPM’s architecture and usages then discuss opportunities for collaboration. For additional information, please visit: https://geopm.github.io/geopm/