In a context of climate emergency, the search for innovative solutions to achieve greater comfort and energy efficiency in buildings is essential. Barcelona is testing three prototypes that use industrialised construction to respond to the challenge to improve the habitability and sustainability of existing buildings, reducing CO₂ emissions and energy consumption.

The three winning projects from the ideas competition launched in 2022 by the Fundació BIT Habitat and the Municipal Institute of Urban Planning are the prototypes ALIGRA, Regenerar Barcelona and InnoFAB. The projects consist of large modules that resemble three building façades, designed to adapt to existing residential blocks.

Made of wood and metal, the structures add a new façade to buildings and help create new spaces (balconies, new rooms and communal areas), or to improve their insulation and the impact of the sun. Constructions are also planned for rooftops, to add solar panelling, green rooftops and enable buildings to collect and reuse rainwater. These industrial systems can be manufactured in parts in workshops and then assembled directly on buildings quickly, easily and economically.

The three prototypes will be monitored for 12 months at a site on the Campus Diagonal – Besòs of the Polytechnic University of Catalonia (UPC), in Sant Adrià de Besòs, to assess their impact for health and comfort, urban resilience, energy efficiency, circular economy and biodiversity. This will be possible thanks to the installation of a smart sensor system able to continuously measure various parameters. You can find more information on the website bithabitat.barcelona.