While a great amount of literature has focused on dynamic capability and IT dynamic capabilities, there has been little theory and systematic research done on their lifecycle. Based on the dynamic capability and IS literature, this paper aims to contribute to this body of knowledge by studying the lifecycle of the Green Information Technologies/Systems (IT/S). Dynamic Capability is defined as the two-fold organizational process of: (1) recognizing the role played in ecological sustainability by the Information Technologies and Systems (IT/S), and (2) the contribution made to the ecological sustainability by the IT/S. We advance a research model aimed at understanding the role of the Green IT/S' Dynamic Capability in choosing and managing green IT/S strategies. Keywords: Dynamic