Material requirements for low-carbon energy technologies: A quantitative review

Deployment of clean energy technologies will require a considerable amount of materials. The surge in demand for metals related to emerging energy technologies may hinder the energy transition. In this study we provide a comprehensive overview and analysis of existing work in this field, a solid quantitative baseline for material requirements of different energy technologies and quantitative information that can be used to generate learning curves for the material requirements of different energy technologies. We conducted a quantitative review of the material requirements of low-carbon energy technologies in 132 scientific publications, and provided a comparative analysis of detailed data including material intensity and lifetime data. Besides providing a large amount of structured quantitative data, the results of our work indicate that: (1) research on the demand for low carbon technology related metals has received much attention since the 2010s; (2) around 80% of the publications focus on the global level while national level studies are underrepresented; (3) science-based future scenarios are the main means of estimating total future material requirements; (4) most studies foresee material constraints of large-scale implementation of low-carbon technologies and the secure and responsible supply of these materials is still the subject of discussion; (5) changes in metal intensity caused by technological development and material requirements for non-critical components are important though often overlooked.

Automated summary

This study provides a comprehensive overview and analysis of the material requirements for low-carbon energy technologies. It shows that research on the demand for metals in low-carbon technologies has gained attention since the 2010s. The majority of studies focus on the global level, and science-based future scenarios are used to estimate the future material requirements. However, the implementation of low-carbon technologies on a large scale may face material constraints and the secure supply of these materials remains a subject of discussion.