To accelerate sustainability transitions, interorganizational change programs aim to renew the foundations upon which organizations and industries operate. Actors involved in these programs need to project for realizing and protecting future value within the constraints of existing institutions and fields. The understanding of how this projecting occurs and how it can be supported is limited, especially for interorganizational change programs in which actors of multiple organizations jointly create value under conditions of extreme uncertainty and emergence. Drawing upon the joint value creation practices employed in five circular economy programs, we identify three modes of projecting for accelerating sustainability transitions: distributing, dispersing and activating. The modes of projecting relate strongly to how programs are configured. We contribute to the literature on sustainability transitions with a practice-based understanding of how transitions are accelerated bottom-up through projecting in joint value creation. Another contribution is to the literature on value creation in interorganizational projects and programs by explaining how the three modes of projecting require different approaches for managing value creation when contexts are uncertain and program goals evolve and take shape over time.@en