Dynamic Sustainability Assessment: Enhancing the RAMI 4.0 Model for Environmental Integration in Industry 4.0

The rapid advancement of digital technologies is reshaping manufacturing, enabling smarter, interconnected systems that redefine industrial processes. While frameworks like the Reference Architectural Model for Industry 4.0 (RAMI 4.0) provide essential guidance for navigating this digital transformation, they overlook a fundamental aspect: the sustainability of processes. Traditionally, environmental impacts are assessed through Life Cycle Assessment (LCA), a well-established methodology. However, LCA's static and retrospective nature struggles to align with the dynamic, real-time capabilities of Industry 4.0. To address this dual challenge, leveraging digitalization while ensuring sustainability, we propose integrating an Environmental Assessment (EA) layer into RAMI 4.0. This additional layer would enable real-time updates of environmental data, supporting continuous optimization of materials and production processes with a strong focus on their ecological implications.