Increasing an organization’s ability to Green their Information Technology (IT) requires change in the IT organization. Organizational learning is critical for the IT organization to change in a way that environmental sustainability issues are embedded in the practice of IT people and management and in the creation, use and disposal of hard and soft IT artefacts. By understanding how IT organizations learn to develop their Green IT Readiness during the intuiting, interpreting, integrating and institutionalization processes of organizational learning, IT organizations will be better equipped to respond to the new demands of greening IT and of supporting the greening of the wider enterprise. This paper provides an initial conceptualization of the domain construct of Green IT Organizational Learning (GITOL). A desk-based research approach is used to provide insights as to how a large multi-national IT organization learns with respect to Green IT.