We tested whether power reduces responses related to social stress and thus increases performance evaluation in social evaluation situations. We hypothesized and found that thinking about having power reduced fear of negative evaluation and physiological arousal during a self-presentation task (Studies 1 and 2). In Study 2, we also showed that simply thinking about having power made individuals perform better in a social evaluation situation. Our results confirmed our hypotheses that the mechanism explaining this power–performance link was that high power participants felt less fear of negative evaluation. The reduced fear of negative evaluation generated fewer signs of behavioral nervousness, which caused their performance to be evaluated more positively (serial mediation). Simply thinking of having power can therefore have important positive consequences for a person in an evaluation situation in terms of how he or she feels and how he or she is evaluated.