Built for net-zero: analysis of long-term greenhouse gas emission pathways for the Nigerian cement sector

• Published in: Journal of cleaner production Vol. 383; p. 135446
• Main Author: Yetano Roche, María
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 10.01.2023
• Subjects: Cement; Energy transition; Industry decarbonisation; Long-term scenarios; Net-zero; Nigeria; Long-term scenarios; Nigeria; Industry decarbonisation; Energy transition; Net-zero; Cement
• ISSN: 0959-6526; 1879-1786
• DOI: 10.1016/j.jclepro.2022.135446

Nigeria is Africa's top cement producer and could be on course to be one of the top producers globally. The goal of this study is to identify and critically examine the pathways available to Nigeria to meet its decarbonisation goals in the cement sector. Based on a literature review, the study assesses demand drivers and decarbonisation potentials for the sector. It then presents two different quantitative pathways for growth in production of cement by 2050, and three different pathways for decarbonisation of the sector. Using published data and a scenario analysis tool, the study calculates how the sector's emissions might evolve under each of these pathways. The results indicate that, in the most ambitious scenario, emissions from the sector can plateau by the late 2030s, resulting in an overall increase of 21% by 2050 (compared to 2015 levels). Achieving this scenario is necessary in order to put the sector on a path to net zero emissions beyond 2050. The scenario is driven by reductions in both energy-related and process emissions, as well as a small share of carbon capture and storage and demand management. A moderately ambitious scenario that relies mostly on savings on energy-related emissions results in an 84% increase in emissions by 2050. Finally, the Business-as-Usual scenario results in an almost tripling of emissions by 2050. The results indicate a strong potential for policies to drive improvements in energy efficiency and clinker-to-cement ratio. Critical areas of uncertainty within the assumptions include the production rates (including the evolution of the export market) and the fuel mix. [Display omitted]