The adoption of Green Supply Chain Management (GSCM) and its impact on firm's performance is gaining importance in both academic and corporate fields. While past studies found a positive relationship between GSCM and Corporate Environmental Performance (CEP), there is no evidence of either which are the green practices that improve CEP the most or the moderating roles that affect such relationship. In order to provide clarity as to which tools are key in leading to a stronger CEP, this study aims to examine how GSCM relates to CEP, under the effect of several moderating roles. To that end, 166 articles published between 2001 and 2023 were included in our meta‐analysis sample. Our central results reveal that the link between the variables is significantly positive, with investment recovery being the practice with the strongest impact. Moreover, it is confirmed that moderators do have an impact in this relationship. Practical implications are relevant for policy makers and upper management that is willing to introduce environmental thinking in their business strategy.