This study examines the frame-building process regarding climate change in Indonesia, an emerging country in the Global South that produces significant carbon emissions and is one of the nations most affected by the climate crisis. Through a quantitative content analysis of press releases from the Indonesian government and environmental nongovernmental organizations (NGOs) and media coverage of climate change, this study identifies three frames promoted by policy actors and five frames used by in-house journalists from print and online media organizations in Indonesia. A comparison of these frame sets shows that journalists often use frames on climate change that are not promoted by either political actors or NGOs. Nevertheless, the government is the most important source for journalists on climate change reporting. Next, a second step investigates how different contextual conditions influence the collaboration between journalists and their sources in the frame-creation process to examine it in more detail. Hence, this study relies on the hierarchy of influence (HI) and intereffication (IE) models. To this end, journalists, academics, and PR officers from Indonesia’s government organizations, environmental NGOs, and palm oil lobby organizations are interviewed. The results show that organizational structure, financial resources, and personal networks influence how successfully PR officers disseminate their frames, while journalists’ frame selection is influenced by their media affiliations, routines, professional experience, and interests. This study also discusses how macro conditions in Indonesia influence these micro- and meso-level processes, such as the social system and distinct cultural and historical contexts.