IEA DSM Task 24 involved multiple participating countries working together over two phases to research and promote best practices in behavior change for demand-side management (DSM) of energy. Phase I from 2012-2015 included case studies, workshops, publications and an online platform. Phase II aims to provide tools and guidance to "behavior changers" through understanding practices, developing interventions and standardizing evaluation metrics beyond just kilowatt hours. The task takes a holistic approach focusing on human needs and behaviors within the energy system and emphasizes cross-sector collaboration to drive system-wide changes.