 Open innovation has become increasingly important in many fields, including construction where it is still not widely adopted. It is believed that open innovation could help address the challenge of decarbonizing buildings, but there is limited understanding of how this approach works in the context of the construction industry. This paper reviews the literature on open innovation and applies it to the construction sector with particular emphasis on the Open Innovation Testbed OITB concept. The authors analyze the evolution of the open innovation concept from its original application to the construction sector and provide a systematic and bibliometric literature review of open innovation. They then discuss the limitations of prior open innovation studies and the challenges for the OITB new construction paradigm. Finally, they offer recommendations for future opportunities and approaches to tackle and boost energy-efficient envelope solutions for the construction industry. This article was authored by Graziano Salvali, Marta Maria Susana, Paolo De Loro, and others. We are article.tv, links in the description below.