The concept of emotional energy generates increasing scholarly and popular interest. Research spans multiple disciplines (psychology, sociology, organization behavior, network science) and levels of analysis: micro (individual-level emotional energy), meso (dyadic or relational energy), and macro (group emotion, energy networks). I impose order on this sprawling and disparate literature by defining core concepts and conducting a broad but selective review with a focus on mechanisms. This review identifies key empirical findings but also reveals critical ambiguities and disagreements in the conceptualization (and therefore measurement) of energy. Theorizing has outpaced empirical testing. One implication is that practice may be unmoored from a solid empirical grounding. I offer a critique that points to several promising areas of empirical research. I conclude with practical implications for individuals and organizations, summary points, and future issues.

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