Despite many contributions to Sustainable HCI stressing the importance of “moving beyond the individual”, a majority of HCI work is still targeted mainly at consumers or resource users. However, many stakeholders influence resource use and including such stakeholders in design work can open up new design opportunities for supporting sustainable practices. In this paper, we present results from a longitudinal study of practices related to energy improvement work in housing cooperatives. During the study, we discovered new opportunities for interactive technologies to support this work when we involved various stakeholders other than housing cooperatives. In addition, we discuss more general implications for design aiming to support diverse stakeholder engagement in practices related to resource use: which stakeholders and practices to include, temporal aspects of engagement, and opportunities for supporting shared responsibility for resource use.