• The registration for the third call for solutions is closed

    The winners were announced on September 9, 2021

    Themes of the third call for solutions


    Adaptation to climate change


    The rise in average temperatures at the Earth's surface and the resulting climatic disturbances are the observed consequences of massive emissions of greenhouse gases into the atmosphere. The link between the two phenomena is no longer debated and there is now a widely shared vision of the consequences of these disruptions.


    While climate disruptions will generate important systemic impacts on the life of human societies, fauna and flora, how can we guarantee the reasonable adaptation of all our natural and social ecosystems? Major socio-economic, political, sanitary and geopolitical issues are already emerging, which are potential risks to which we must provide answers and solutions.


    7 main themes have been chosen by SEKOYA partners for this third call for solutions:


    1. Energy renovation: Work and solutions to reduce the energy consumption of the building and its occupants
    2. Biobased materials: Building materials composed partially or totally of resources of plant or animal origin
    3. Summer comfort: Bioclimatic design, maintaining cool air in the building during hot periods
    4. Water management: Better management of wastewater, rainwater and drinking water in buildings and in the city
    5. Cooling islands and paths: Solutions to fight against urban overheating, means of cooling accessible in hot periods
    6. Biodiversity: Taking into account living organisms, environments and natural resources at each stage of a development, construction or renovation project, in the building industry as well as in public works. Solutions to better take into account, preserve and develop biodiversity within projects.
    7. Climate resilience: Resistance and transformation of the climate changes we are going through into social and economic opportunities


    The Carbon & Climate platform seeks to identify and qualify innovative, sustainable and low-carbon solutions through an online application process. Eiffage and its partners will qualify the most effective solutions (via a carbon footprint statement and a life cycle analysis) with a potential to contribute to a more frugal construction.

    The platform is technically operated and hosted by the Impulse Labs accelerator, an actor experienced in identifying innovative solutions since its creation.


    New Forms of Mobility


    • Optimise mobility fluidity in congested urban areas (signage, digital control, adaptation to real flows...).
    • Enhance the attractiveness and intuitive understanding of public transportation offers for all types of users.
    • Promote low-carbon forms of mobility and urban land use.

    Biodiversity and Ecological Engineering

    • Reintegrate nature into cities as a source of ecosystem services: creation of freshness isles, urban agriculture and short circuits, use of CO2 for agricultural purposes, etc.
    • Develop solutions to restore degraded natural areas (soil stabilisation, water infiltration, soil decontamination by plants, renaturalisation of mineral areas, etc.).
    • Tool to evaluate the quantities of stored biogenic carbon.

    Low-carbon Design and Implementation

    • Systemise the use of low-carbon materials.
    • Propose an efficient, biosourced insulation for new and renovated buildings.
    • Develop industrialised solutions for energetic renovation.
    • Design buildings with scalable uses and without structural costs.

    Methods and Tools


    • Absorb CO2 in cities and rural areas by reintroducing green spaces into our projects.

    Circular Economy


    • Develop rapid resource diagnostic solutions designed used before existing buildings' demolition.
    • Develop physical and/or virtual exchange systems between supply and demand for land, materials, equipment, etc.
    • Develop solutions for on-site reuse of concrete and aggregates in construction, infrastructure, treatment of deconstructed materials before reuse, etc.

    Renewable Energies and Energetic Performance​

    • Propose upstream diagnostic systems for the use of local renewable energies.
    • Develop any energy-saving solution.
    • Develop new solutions for renewable energy production and recovery.
    • CO2 capture processes.
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