Mapping the complexity of Net Zero transition through a System of Digital Twin Systems

The upsurge of digitalization in many sectors has been associated with better environmental outcomes. Recent policy change and international convergence has shown Net Zero (NZ) vision as a means of controlling global greenhouse gas emissions. This article focuses on construction sector and the complex transition to NZ through digital twins (DTs). It does so via a system thinking approach, 53 interviews, and 2 focus groups with DT experts. The key factors of this dual 'digital and green' transition are breaking down silos, collaborating across the supply chain and the need for a data-oriented approach in analyzing input, processing, and output of the DTs. Apart from unravelling the factors on how individual (asset) DTs can support NZ, their aggregates in a connected DT system of systems are also crucial to addressing the complexity of this transition at a larger scale. The article also offers new insights on the orchestrators of such system of DT systems and their governance mechanisms in meeting NZ. Additionally, one emergent finding relates to the evolution of associated concepts and terminologies. By identifying the complexity factors, this article also contributes to the management of increased risk that accompanies growing complexity.