Dekarbonisierung der industriellen Produktion (DekarbInd) - Teilbericht 3: Bewertung von Dekarbonisierungsmaßnahmen und Erarbeitung von Eckpunkten einer Roadmap für die Zementindustrie

Die vollständige Dekarbonisierung der deutschen Industrie ist eine Mammutaufgabe, die grundlegende Auswirkungen auf Wirtschaft und Gesellschaft hat und nur unter Einbindung aller ⁠Stakeholder⁠ erfolgreich werden kann. Das Projekt "DekarbInd" hat in verschiedenen Workshops mit diesen Stakeholdern gemeinsam Lösungen erarbeitet.
Teilbericht 3: Als Ergebnis dieses Teilvorhabens liegen Eckpunkte einer Gesamt-Roadmap für die Dekarbonisierung der deutschen Zement- und Betonindustrie vor, die alle technologischen Hebel und Treiber, Hemmnisse und Handlungsfelder im Überblick darstellen. Ergänzt werden diese durch drei Detail-Roadmaps für die vertieft betrachteten Teilbereiche "Thermische Energie", "Neue Zemente und Betonbautechniken" sowie "Carbon-Capture and Usage/Storage (CCUS)".

Germany is to become greenhouse gas neutral by 2045. In 2021, the German industrial sector emitted about 181 million tonnes of CO2 equivalents. This means that it accounts for 24 percent of national greenhouse gas emissions and is the second largest source of emissions in Germany after the energy industry2. About two thirds of industrial emissions come from energy-intensive industry. The steel and cement industries in turn cause more than half of these emissions and are particularly challenging due to their process-related emissions and high process temperatures. The decarbonisation of the steel and cement industries is therefore central to achieving greenhouse gas neutrality. The decarbonisation of energy-intensive industry requires innovative technological concepts and suitable, long-term political framework conditions that open up transformation paths for industry players at an early stage and offer the greatest possible planning security for the necessary investments. In the project, the researchers developed key points for roadmaps for the decarbonisation of the steel industry (led by Fraunhofer ISI) and the cement industry (led by the Wuppertal Institute). The cornerstones of a roadmap for the cement industry developed in work package 3 and presented here give concrete indications of which technological concepts for decarbonisation exist in this industry sector, how these can be implemented over time, which drivers and barriers favour or inhibit these technological paths, and which measures can be implemented by actors in various fields of action in the short, medium and long term. In a two-and-a-half-year participation process, the project involved numerous stakeholders from industry, associations, social interest groups, politics, authorities and science through a series of workshops and interviews with experts as well as other events. This involvement enabled transparency, participation and practical relevance of the results. The result is an overall roadmap for the decarbonisation of the German cement and concrete industry, which presents an overview of all technological levers and associated drivers, barriers and fields of action. This is supplemented by three detailed roadmaps for the subsectors "Thermal energy supply", " New cements and concrete technologies " and "CO2 capture and use or storage (CCUS)", which are examined in depth.