Barcelona is constantly evolving, and with it, its infrastructure. The construction sector in Europe consumes 50% of extracted materials, generates 35% of total waste, and accounts for more than 30% of global water consumption, severely impacting the environment. In this context, it is essential to promote more resilient infrastructure aligned with the goals of the European Green Deal.

Committed to reinforcing sustainability in its projects, Barcelona d’Infraestructures Municipals (BIMSA) has commissioned us, in collaboration with the LEITAT Technological Centre, to conduct an environmental diagnosis to improve the monitoring and integration of sustainable criteria in its works and projects.

This initiative aims to establish a solid methodology that enables the assessment and enhancement of sustainability at every phase of the construction process, identifying optimization opportunities in areas such as energy efficiency, waste management, and the responsible use of natural resources, with a positive impact on the city.

Analysis methodology for decarbonization and circularity

The methodology has been developed based on the analysis of three key areas in BIMSA’s activities, considering the European regulatory framework that governs the sustainability of construction projects, such as the Environmental Impact Assessment Directive 2014/52/EU and the Energy Performance of Buildings Directive (EPBD) of 2018.

Project and construction analysis

To measure the real impact of BIMSA’s projects, Aiguasol and Leitat have conducted a thorough study of 25 projects developed by the entity. These are classified into two categories: new construction and rehabilitation buildings (including housing, sports centers, and other facilities), and infrastructure (green spaces, photovoltaic installations, and bicycle lanes).

To analyze the projects, we considered technical guidelines and sustainability indicators related to key environmental aspects, such as emissions reduction, energy savings, efficient water management, waste management, and soil impact. We also evaluated material circularity, acoustics, the heat island effect, biodiversity, air quality, and mobility. Additionally, a set of more detailed indicators based on the LEVEL(s) methodology was proposed, adapted to BIMSA’s specific needs.

Process and documentation analysis

BIMSA’s works are governed by technical specifications that establish sustainability conditions and guidelines, adapted to each type of project. The projects have met specific requirements, including environmental criteria and regulations related to the use of wood, energy self-sufficiency, acoustics, and asbestos management. BIMSA has verified and monitored compliance with these requirements throughout project execution. To improve the process, a summary framework specifying the applicable technical guidelines has been created, and a tracking methodology has been implemented for completed projects.

Data management and digitization analysis

Once the actions and indicators have been evaluated, the next objective is to analyze the origin of the data and the methodology used to obtain it, utilizing real databases and specialized software to assess project sustainability. These include meteorological, environmental, and waste databases, as well as dynamic simulation programs to analyze the behavior of buildings and infrastructure.

The goal is to record and process all data to define the environmental impact of each project in its different phases. Digitization and analysis will help identify areas for improvement and risks, facilitating actions to optimize the sustainability of BIMSA’s projects.

Towards more sustainable urban infrastructure

The developed methodology will enable BIMSA’s new projects to effectively respond to climate challenges and European regulatory frameworks, contributing to a healthier and more efficient Barcelona. At the same time, it will facilitate informed decision-making aligned with the entity’s environmental and strategic objectives.

At Aiguasol, we reaffirm our commitment to sustainability and innovation, actively collaborating in transforming the urban environment into a greener and more livable space for future generations.