Sustainable transformation in the rail sector

As Europe's largest station operator with over 500 existing station buildings, around 75% of which are heritage listed buildings, DB InfraGO plays a key role in DB Group’s ambitions to become climate neutral by 2040 and establish a fully circular economy. Around a fifth of the station buildings within the client’s portfolio were built before 1900, and another fifth before 1950; given their age, the majority of these existing station buildings are already in need of renovation, or will be in the coming years.

This comprehensive portfolio offers great potential for creating synergies between conversion and renovation work, as well as for implementing measures efficiently and according to a clear methodology and structured process. Integrating sustainability as a basis for quality plays a central role in this.

Anchoring sustainability early on

The guide supports the integration of sustainability in the early stages of a project, right through to preliminary planning (service phase 2). This lays the foundation for the integration of sustainability throughout the entire course of the project at an early stage.

Developed in a co-creative process between Arup and DB InfraGO, the guide is divided into five key areas of action that cover sustainability issues holistically, from CO₂ to resources, climate, and social issues. 

1. Circular construction

Preservation and reuse of existing buildings and components. Planning focuses on durable, flexible, and recyclable structures and materials, as well as sustainable demolition, in order to conserve resources and avoid waste.

2. Indirect emissions

The reduction of greenhouse gas emissions and embodied (grey) energy, covering manufacturing, construction, use, and maintenance across the full life cycle, is a central objective. Life cycle assessments (LCAs) are used as a key tool for evaluation and optimisation.

3. Energy efficiency

Decreasing energy consumption through passive measures, an optimised building envelope, automation, efficient plant technology, and the use of renewable energies to ultimately reduce the carbon footprint of the works.

4. Climate and biodiversity

With regard to climate and biodiversity, the planning incorporates climate resilience measures, protection against extreme weather, sustainable water management, heat-reduction strategies, and the integration of green spaces to enhance biodiversity and improve the local microclimate.

5. Social sustainability

To promote social sustainability, the planning encourages inclusive, safe, and healthy spaces that support a high quality of life. Accessibility, social interaction, architectural heritage, and the needs of users and the local community are all taken into account.