GROOF - Greenhouses to Reduce CO2 on Roofs


Project Summary

 

The GROOF (Greenhouses to reduce CO2 on Roofs) project is an innovative cross-sectoral approach to reduce CO2 emissions in the construction and agriculture sectors by combining energy sharing and local food production.

The idea is to use rooftop greenhouses as a tool to:

  • Recover actively (use of the ventilation system) and passively (insulation effect) the heat produced and otherwise lost by the support building in a horticultural production installed in a rooftop greenhouse,
  • Collect the CO2 produced by human activity and the activities of the support building to feed the plants,

Practically, the project facilitates the emergence of this type of greenhouse on the market by demonstrating and disseminating good practices to actors in the building and agricultural sectors that are favourable to the development of profitable and functional economic and social models.

The project specifically aims to:

  • Identify and reduce market access barriers (urban planning rules, technical regulations, insurance, etc.): GROOF teams studied the practices in different NWE countries as long as the local regulations. The interview of several pioneers such as BIGH (Belgium), Urban Farmers (The Netherlands), Universitat Autònoma de Barcelona (Spain) and others provided valuable information that will be used to produce guidelines for early adopters struggling with the implementation of CO2-cutting rooftop greenhouses.
  • Support the first users in the implementation of their project: 10 early adopters have been selected through an open call and are currently coached by GROOF experts. The success of those 10 different profiles will demonstrate the relevance of several business models involving rooftop greenhouses and is expected to inspire others. You can discover the early adopters here.
  • Experiment and demonstrate the effectiveness of the technology for a representative number of business and social models: GROOF is investing in four pilot projects, designed to prove the effectiveness and sustainability of models related to different types of buildings. They are located in France, Belgium, Luxembourg and Germany. You can discover them here.

The results of each activity will be openly shared on our international community on the online platform Construction21 where regional and national public authorities, SMEs and large enterprises, research centres and general public are invited to interact. 

This community also host a mapping of existing and planned rooftop greenhouse projects in the world. Each project leader is invited to fill in the information of his or her project in order to share it with the world and benefit from the community’s feedback.

 

 


GUIDELINES

The purpose of these guidelines is to help rooftop greenhouses (RTG) project owners to introduce energy, construction, and production synergies with the host building in their business model in order to strengthen its robustness while reducing CO2 emissions.

GUIDELINES

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Project Partners

  • Université de Liège, Gembloux Agro-Bio Tech

    7 Place du 20 août
    Liège
    4000
    Belgium

    View partner details

  • EBF GmbH

    24 Robert-Bosch-Straße
    Bensheim
    64625
    Germany

    View partner details

  • ASTREDHOR: Institut Technique de l’Horticulture

    44 rue d’Alésia
    Paris
    75682
    France

    View partner details

  • Centre Scientifique et Technique du Bâtiment

    88 avenue Jean Jaurès
    Champs-sur-Marne
    77447
    France

    View partner details

  • Hochschule Trier Institut für angewandtes Stoffstrommanagement

    9926 Campus Allee
    Birkenfeld
    55761
    Germany

    View partner details

  • Groupe One

    69 rue de la Station
    Braine le Comte
    7090
    Belgium

    View partner details

  • Cluster Eco Construction

    1C Rue Eugène Thibaut
    Namur
    5000
    Belgium

    View partner details

  • Universitat Autònoma de Barcelona

    Ed. Rectorat Campus de la UAB s/n
    Cerdanyola del Vallès
    08193

    View partner details

  • Les Jardins de Gally

    Ferme de Vauluceau Route de Chèvreloup
    Bailly
    78870
    France

    View partner details

  • Institut de Formation Sectoriel du Bâtiment

    5 Zone d’Activité Economique Krakelshaff
    Bettembourg
    3290
    Luxembourg

    View partner details

  • Conseil de Développement Economique pour la Construction

    5 Zone d’Activité Economique Krakelshaff
    Bettembourg
    3290
    Luxembourg

    View partner details

Lead partner

Organisation Address Email Website
Conseil de Développement Economique pour la Construction 5 Zone d’Activité Economique Krakelshaff
Bettembourg
3290
Luxembourg
r.guillaud@cdec.lu www.cdec.lu
Name Contact Name Email Country
Université de Liège, Gembloux Agro-Bio Tech Haïssam Jijakli mh.jijakli@ulg.ac.be Belgium
EBF GmbH David Volk david.volk@ebf-gmbh.de Germany
ASTREDHOR: Institut Technique de l’Horticulture Guillaume Morel-Chevillet guillaume.morel@astredhor.fr France
Centre Scientifique et Technique du Bâtiment Maeva Sabre maeva.sabre@cstb.fr France
Hochschule Trier Institut für angewandtes Stoffstrommanagement Karsten Wilhelm k.wilhelm@umwelt-campus.de Germany
Groupe One Marc Lemaire marc.lemaire@groupeone.be Belgium
Cluster Eco Construction Hervé-JAcques Poskin hj@ecoconstruction.be Belgium
Universitat Autònoma de Barcelona Xavier Gabarrell xavier.gabarrell@uab.cat
Les Jardins de Gally Nicolas Brulard nbrulard@gally.com France
Institut de Formation Sectoriel du Bâtiment Marcel Deravet m.deravet@ifsb.lu Luxembourg

GROOF COACHING

Reducing greenhouse gas emissions is a major international concern in the fight against global warming, which threatens our entire ecosystem. The construction sector obviously has a key role to play and, if the energy renovation of buildings is one of the ways to contribute, another solution could well come from higher up... let's look up and seriously consider the potential of our roofs! 

In this context, many European countries are involved in the "GROOF" project, for "Greenhouses to Reduce CO2 on RooFs", with the support of the INTERREG NWE program.

The first coaching sessions took place from 2019 to 2021 with 5 early adopters who could benefit from the expertise of our experts.

2022 marks a new year of coaching with 10 new projects selected, coached by our team of experts. 

 

Our expertise

  • Construction

Knowledge and expertise in construction design, stability, materials, technical assessment, calculation, risk analysis. Specialisms in roofing and structure. Knowledge in material behaviour and innovative combination. Skills in technical project analysis.

  • Energy

Analysis of the energy flows of the existing building and the project itself, counselling for techniques and measurements to reduce energy demand and implement existing flows to reduce CO2 emissions.

  • Production

The plant production expertise consists both in the design of plant production systems and the management of production. This includes knowledge in growing system, plant nutrition, light, pest and disease management, practical organisation of the work, etc...

  • Economic viability

Emphasis on the viability and durability of the candidates’ project, with the respect of the candidates’ vision. This includes evaluating the stakeholders, the cultural & geographical context, the social fabric, the environmental ambitions, the key threats, etc.

 

All those 10 projects bring together different greenhouse techniques (hydroponic greenhouses, aquaponics, soil-based vegetable gardens, etc.) as well as different types of projects (educational, social, private, etc.) but all of them focus on ecology and the respect for environmental values.

DISCOVER THE EARLY ADOPTERS FROM THE 2nd COACHING (2022 - 2023)

HOUSING MANAGEMENT OF THE CITY OF BRUSSELS

Location: Bruxelles (Belgium)

HOUSING MANAGEMENT OF THE CITY OF BRUSSELS : The project is located at the heart of the Brussels Pentagon and consist of the reconfiguration of the Rempart des Moines site: – social housing, divided into 3 distinct architectural typologies and in the centre a public space with its collective social equipment named Pole Rempart.

👉 Read more on the presentation sheet

HABITER UNE FERME URBAINE

Location: Lyon (France)

HABITER UNE FERME URBAINE by Ma Ville Verte : Located in the Lyon district in France, Alliade Habitat, social housing developer, will build a Urban farm on top of new apartment buildings.

👉 Read more on the presentation sheet

THE NEW FARM

Location: The Hague (Netherlands)

The New Farm is a redeveloped building into a hub for production companies under 3 central themes: food production, circularity and social innovation.   

👉 Read more on the presentation sheet

GROSVENOR WORKS

Location: London (UK)

Grosvenor Works will expand the existing premises from its current 3 floors, to between 5 and 7 floors. The extension will be crowned with a rooftop greenhouse housing London’s first publicly accessible hydroponics school and high-tech urban farming hub, targeting the creation of new technology-led urban farmers.

👉 Read more on the presentation sheet

MTU TH BUILDING PROJECT

Location: Cork (Ireland)

Munster Technological University (MTU) is located outside of the city and positioned on an elevated site, the Tourism and Hospitality building benefits from a feeling of openness with views of the natural environment.

👉 Read more on the presentation sheet

ELIZABETH BY GREEN NEST

Location: Bruxelles (Belgique)

The project Elizabeth by Green nest is a decrepit building complex including a concert hall that will be renovated and operated with a coherent sustainable and circular approach to address, at its scale, environmental challenges. 

👉 Read more on the presentation sheet

PROJECT WOOD QUAY by DUBLIN CITY COUNCIL

Location: Dublin (Ireland)

The project Wood Quay by the Dublin City Council leds to the developpement of a food strategy for the city, which will include educational programming on growing and cooking.  

👉 Read more on the presentation sheet

HIMMELGRÜN CHILDREN’S NURSERY

Location: Damendorf (Germany)

The project Himmelgrun Children Nursery will be based on the same model which has been installed at ebf as their pilot rooftop greenhouse but on the ground. The production itself is not sold, but grown with the children and then harvested, processed and consumed directly on site. 

👉 Read more on the presentation sheet

SEEDLEAVES

Location : London (UK)

Seedleaves.com is part of a wider project based around bringing aeroponic tower growing directly into both food service and food retail.

👉 Read more on the presentation sheet


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Four Pilot Projects

The GROOF project is investing in four pilots, designed to prove the effectiveness and durability of the models related to different building types, in Belgium, Germany, France and in Luxembourg.

Read more on each project below.

 

→ Fermes de Gally - Pilot

Paris, France

Urban roofs remain a little exploited space on which agriculture can develop and provide sustainable solutions to food, economic and climate issues in the city. A new stage in this urban agricultural development is therefore to create greenhouses on the roof that are totally integrated into the building's flow: in particular heat, water and CO2.
In this context, our greenhouse project on the roof of the Ferme Urbaine de St Denis consists of the construction and operation of a productive vegetable garden of 360 m² on the roof of the office and workshop building of the Ferme de St Denis, an urban farm run by les Fermes de Gally. This project will produce hydroponic and substrate agricultural products sold locally, in addition to farm production in the ground.
The greenhouse will have to work in synergy with the support building. Its location on the roof offers the advantage of enhancing the flat roof surface and thus preserve the floor space for the activities of the Kersanté Farm of St Denis (FKSD in the following). This feature will also allow it to easily connect to the heating and ventilation network of the building to recover heat and CO2, contained in the stale air, necessary for the cultivation of plants.

Follow the project of Construction21: Ferme de Gally - FRANCE

→ Université de Liège - Pilot

Gembloux, Belgium

The urban greenhouse of the TERRA building is part of the WASABI platform which brings together in one location all the innovative agricultural production systems adapted to the city and in dialogue with biodiversity. The platform and the urban greenhouse is an institutional project supported by Gembloux Agro Bio-Tech and ULiège.

The urban greenhouse will have an area of ​​198m² and will be divided into three compartments dedicated to research, teaching and demonstration of innovative systems adapted to urban agriculture. The main compartment (132 m²) will be dedicated to research only and will host experiments related to urban agriculture (hydroponics, aquaponics and bio-ponics). The second compartment will be dedicated to the demonstration and experimentation of innovative systems, both for students and for other publics. The third compartment will be used as technical hall. The greenhouse will reproduce conditions suitable for temperate crops such as lettuce and tomato. This greenhouse will be characterized by an accurate climate control, the production system will be modular in order to grow different crops.

Follow the project of Construction21: Université de Liège - BELGIUM

→ EBF - pilot

Bürstadt, Germany

The ebf pilot is a Sunlight greenhouse, which is a modern approach to the classical lean-to concept. It is a greenhouse which is focused on minimal energy demand and utilizing existing energy flows to achieve a year-round operation. In combination with an internally mounted photovoltaic shadowing system, the greenhouse is becoming the worlds first plus energy greenhouse.

The pilot will be installed on an old packaging hall of a former nursery which is now being reinstated by ebf to show how a futureproof and sustainable horticulture business can look like. It will unite modern plant production technics with a social aspect of creating a community starting from an early age. The rooftop greenhouse will be implemented in the whole operation harboring specialized plants like chili peppers which can be harvested all year. Furthermore, the schools and kindergardens of the surrounding area will participate in the operation. Here, they have the possibility to learn and share the knowledge for food production. This gives the opportunity to help people reconnect with food production and give them back the responsibilty for their own food security.

Follow the project of Construction21: EBF - GERMANY

→ SOTA - Pilot

Bettembourg, Luxembourg

The IFSB pilot project will be installed on the extension of its company restaurant. The size of the greenhouse will be 18 x 20 m. The rooftop greenhouse will be located near the training site and will house plants that can be used directly in the restaurant below.

Here, the idea is to integrate a food production greenhouse above a restaurant. A reconnection between local food production and people in order to raise awareness about their food. In addition, a corridor will allow visibility over the production area without disturbing it.

The connection to the building to recover CO2 and heat makes sense for the construction sector. Indeed, this sector in Luxembourg will thus be able to have a project integrated into the building allowing a recovery of CO2, a future challenge for this sector.

Follow the project of Construction21: SOTA- LUXEMBOURG

Groof Partners

GROOF project is coordinated by the CDEC (Conseil pour le Développement Economique de la Construction), with the support of the INTERREG NWE programme, and carried out with eleven partners (public and private) from Luxembourg, France, Belgium, Germany and Spain.

Each partner brings valuable skills and knowledge to the project such as construction process and methodology, building energy management, urban agriculture development, knowledge of plants and cropping systems, entrepreneurial skills, socio-economic skills, etc.

Find the partners interviews here.

Company Country Field of expertise
Conseil de Développement Economique pour la Construction Luxembourg Building/construction

Université de Liège – centre de recherches en agriculture urbaine et smart city Institute 

Belgium Agro-socio-eco
EBF GmbH Germany Energy/Technic
ASTREDHOR: Institut Technique de l’Horticulture France Agro-socio-eco
Centre Scientifique et Technique du Bâtiment France Energy/Technic - Building/construction
Hochschule Trier Institut für angewandtes Stoffstrommanagement Germany Energy/Technic - Agro-socio-eco
Groupe One Belgium Agro-socio-eco
Cluster Eco Construction Belgium Building/construction
Universitat Autònoma de Barcelona Spain Energy/Technic - Agro-socio-eco
Les Jardins de Gally France Energy/Technic - Agro-socio-eco
Institut de Formation Sectoriel du Bâtiment Luxembourg Building/construction

With the support of the Walloon Region

News


Interviews GROOF Partners - IfaS

Posted on

Who do you think can benefit from the lessons learned from the GROOF project? Architects, building owners, projects and project developers in urban agriculture and city planners. They can see the benefits and challenges of the implementation of iRTGs. In this project phase, students as well as interns can become part of the project already during their bachelor’s degree and learn directly from the GROOF’s progress and challenges. Read More

When urban agriculture collaborates with rural agriculture.

Posted on

The experience of GROOF partners in coaching professional urban agriculture projects reveals that, although these projects have multiplied in recent years, the definition of a viable economic model remains complex for some projects, as the activities of education and resale of the project's own productions sometimes prove to be unprofitable. Among the existing solutions to improve the economic viability of such projects, the diversification of income sources based on peri-urban or rural agriculture is a good alternative. Discover below, four urban agriculture projects with rooftop greenhouses that have managed to innovate and multiply partnerships with peri-urban or rural farmers to consolidate their economic model. A collaborative motivation that is beneficial for urban agriculture and more broadly, useful for addressing the resilience challenges of cities of the future. Read More

AN INNOVATIVE PLATFORM FOR URBAN AGRICULTURE IN BELGIUM

Posted on

On September 23rd, Groof project participated in the inauguration of the Walloon platform in urban agriculture, WASABI, in Gembloux at the Centre of Research in Urban Agriculture (CRAU) of the University of Liège! This event has gathered over 200 specialists of urban agriculture, online and offline, for a full day of master classes and guiding tours of the different sites. In the presence of His Majesty King Philippe of Belgium and the Minister of Agriculture and Economy, Willy Borsus. Read More

Share of GROOF savings on all energy flows - PART I

Posted on

Part I: Reducing the energy loss in the building. Installing a rooftop greenhouse not only gives us the opportunity to build a future proof and reliant urban farm, it also helps a lot with saving energy in multiple areas in the support building and the area around the greenhouse. This is the first article in a series of three parts, concerning mainly the energy loss reduction in the support building due to the greenhouse installation. The next two parts will cover the circular economy of material flows and the greenhouse as an energy collector. Read More

Interviews GROOF Partners - EBF GmbH

Posted on

Who do you think can benefit from the lessons learned from the GROOF project? The most benefits from the GROOF project can be obtained for professional or semi-professional food producers who are already established and can fall back on knowledge in the field. The GROOF project can add a lot of expertise on top that how a project can be adapted on a rooftop. Furthermore, even non-rooftop urban farms as well as classical horticulture businesses outside of cities can profit from the large knowledgebase laid out by the GROOF experts. Read More

Interviews GROOF Partners - Université de Liège, Gembloux Agro-Bio Tech

Posted on

Who do you think can benefit from the lessons learned from the GROOF project? Nicolas Ancion (NA): The knowledge developed within GROOF will be very helpful for the people involved in a rooftop greenhouse project. Moreover, I do believe that it could also be valuable for any urban agriculture project. Indeed, we do not consider the greenhouse as an objective, but as a tool allowing, in a specific context, to achieve environmental, societal, and economic objectives. Read More

Interviews GROOF Partners - IFSB & CDEC

Posted on

Selon vous, à qui les enseignements du projet GROOF peuvent-ils bénéficier ? Les promoteurs immobiliers, les architectes et les ingénieurs vont pouvoir tirer de nombreux enseignements des projets développés grâce à GROOF. Le secteur de l’agriculture pourra aussi s’inspirer de ces expériences pour démystifier le travail d’Urban Framing. Read More


Press

 

Press releases of the coaching :

         -  Download in English

         -  Download in German

          - Download in French

 

 

                                                                    MEDIA TOOLKIT

 

 

What expertise do you bring to GROOF project?

"We offer knowledge in circular economy and material flow management, especially in regards to energy and resource efficiency and management. HS-Trier/IfaS has also an expertise in environmental assessment methodologies, such as greenhouse gas emission accounting, in order to contribute to the identification of potentials to improve buildings’ environmental performance. Thus, we contribute to GROOF with technical support including technical monitoring of CO2e performance in order to maximise emission savings."

Thomas Anton: Hochschule Trier Institut für angewandtes Stoffstrommanagement, Germany

"Innovation, sustainability, health, three key words representing the impact of GROOF project!"

Pierre Raulier, Project Manager, Centre de Recherche en Agriculture Urbaine, Université de Liège, Gembloux Agro-Bio Tech, Belgium

Quelles seraient les principales raisons pour un développeur de projet d'installer une serre sur toit ?

"Au Luxembourg, un maître d'ouvrage pourra se convaincre de faire une serre sur le toit de son bâtiment en prenant en  compte les arguments suivants :

  • utiliser et rentabiliser un espace perdu
  • augmenter la performance de son bâtiment grâce à un système qui isole, voir chauffe son bâtiment tout en s'autofinançant
  • apporter une plus value dans la vie sociale des bâtiments de logement ou tertiaires."

Marcel Deravet - Sustainable construction project manager, Institut de Formation Sectoriel du Bâtiment, Luxembourg

What were the motivations of the Universitat Autònoma de Barcelona (UAB) to get involved in GROOF project?

"Transfer knowledge accumulated during the last ten years of work and research within ICTA-UAB in urban agriculture in southern Europe. Also, help promote Urban Agriculture in cities and, in this way, reduce CO2 emissions in buildings and make horticultural production more circular."

Xavier Gabarell Durany, Projet Leader, Universitat Autònoma de Barcelona, Spain.

Contacts

 

Open call contact: opencall@groof.eu

General contact: contact@groof.eu


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