Implementing solar photovoltaic systems in the built environment (BEPV) is critical for the construction sector’s contribution to mitigating climate change. While previous studies give various insights into innovation implementation, the challenges to value co-creation by construction actors remain underexplored. By studying the alignment of business ecosystems implementing BEPV in the Swedish built environment, we address this need. Drawing on the cumulative experience of construction actors, this study demonstrates how knowledge mislocation, knowledge deficits, cultural discrepancies, insufficient building codes, frequently changing regulations, and implementing a highly embedded innovation can disturb ecosystem alignment. The study contributes to the ecosystem literature, scholarly discussions of innovation implementation in complex construction projects, and the PV diffusion literature by offering insights into the realignment of ecosystems involving value co-creation by actors from previously unconnected industries. The study links PV diffusion research to the construction management literature by exploring the cumulative experience of implementation at the micro level. We highlight the significant industry reconfigurations required to accommodate a deeply embedded technological innovation, reconfigurations going beyond the challenges of implementing systemic innovations encumbered by fewer material dependencies. We also emphasize the critical importance of industrial interaction, coordination, and learning to accelerate the sustainability transition. © 2023 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.