The energy consumption in our daily lives has increased rapidly and it has been causing exhaustion
of fossil fuel resource and environmental problems. In order to solve these problems, pro-environmental
behavior (PEB) in our daily lives is one of the effective solutions. This study has proposed a method to activate
and continue the online community for promoting their PEBs based on six principles of social psychology
(scarcity, liking, reciprocation, social proof, commitment / consistency and response expectation). A case study
based on the proposed method was conducted with 14 participants to validate whether it activates and continues
online community and promotes their PEBs.