S06 - Session P17 - Description and comparison of 4 pilots Rooftop Greenhouses conceived and build under the European Interreg GROOF project

Authors: Nicolas Ancion, Pierre Raulier, Nathalie Crutzen, Haissam Jijakli, Maeva Sabre, Guillaume Morel Chevillet, Karsten Wilhem, Roxane Huart *

The GROOF project is an innovative cross-sectorial approach to reduce CO2 emissions in the building and agricultural sectors by combining energy use for heating and cooling with local food production in one building. This CO2 emissions reduction is possible thanks to 1) the recirculation of the heat generated by the building to a rooftop greenhouse (RTG) actively (through the ventilation system) and passively to promote plant production, (2) the collect of CO2 produced by human activity and building activities to stimulate plants growth and improve yield, (3) the reduction of transport-generated CO2 emissions by producing fresh food locally. For each of these aspects, GROOF (i) identified barriers to market access, (ii) created a state of the art and a guideline based on literature and experience of existing roof greenhouse. GROOF will also (iii) experiment, validate and demonstrate the effectiveness of rooftop greenhouses thanks to the study of 4 pilots. These pilots of rooftop greenhouses were created and build within the project partners as technologies for CO2 reduction. We will present the agro-socio-economic hypothesizes and plans that have driven the conception and construction of the pilots based on the 4 main aspects and the monitoring system proposed: at Darmstadt-EBF (Germany), at Gembloux-University of Liege (Belgium), at Paris-Gally (France) and at Bettembourg-IFSB (Luxembourg). The further study of the 4 pilots during the following years will complete scientific knowledge's of such concept and will provide tools to overcome the barrier and facilitate new projects. It will also strengthen an additional ongoing mission of GROOF: coaching 20 stakeholders to build their own RTGs also based on CO2 emissions reduction.