ABSTRACT

The new metro line to Älvsjö, a key component of Region Stockholm’s public transportation expansion, aims to reduce its carbon footprint by 50% during construction. This ambitious goal aligns with regional and national climate objectives. The project employs various strategies to achieve this target, including technical optimization, stringent emission requirements for materials, efficient mass handling, fossil-free production, without losing focus on energy-efficient operations. Challenges arise from the construction industry’s conservative nature and complex regulatory landscape, which can hinder the adoption of innovative, carbon-focused methods. The project emphasizes organizational learning, flexibility, and integrating sustainability throughout all phases. Success hinges on balancing new technologies with regulatory, operational, and environmental requirements. By serving as a model for sustainable infrastructure development, the Älvsjö metro line, not only addresses growing transportation needs, but also contributes significantly to Stockholm’s transition towards a carbon-neutral future, supporting the construction of 48,500 new homes in the area.