Summary and critical review of the International Energy Agency’s special report: The role of critical minerals in clean energy transitions




Critical review, Energy transition, IEA, Raw materials, Supply risks


This paper makes a critical review of the IEA’s report entitled The Role of Critical Minerals in Clean Energy Transitions. The main goal of this report is to identify key minerals and metals that could generate supply problems and bottlenecks in a clean energy transition. The IEA establishes a series of key recommendations towards mineral security, analysing the amount of different materials used in certain technologies (electric cars, solar PV, onshore and offshore wind, nuclear, coal, and natural gas). Such recommendations include, among others, ensuring adequate investment in diversified sources of new supply, the promotion of technology innovation or strategic stockpiling. This report is an essential step towards awareness rising about this issue, because until recently it had not received the attention it deserved. However, it falls short on the impact that mineral scarcity can have on the development of economies and the planet. For this reason, we analyse section by section the report and provide some additional comments on aspects that could be further addressed to avoid replacing fossil fuel addiction with raw materials dependence.


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Andersson, M., Söderman, M.L., Sandén, B.A. (2017). Are scarce metals in cars functionally recycled?. Waste Manag. 60, 407-416.

Calvo, G., Mudd, G., Valero, Alicia, Valero, Antonio (2016). Decreasing ore grades in global metallic mining: A theoretical issue or a global reality?. Resources 5 (4).

Calvo, G., Valero, Alicia, Valero, Antonio (2017). Assessing maximum production peak and resource availability of non-fuel mineral resources: Analyzing the influence of extractable global resources. Resour. Conserv. Recy. 125, 208-217.

Domínguez, A., Valero, A. (2013). Global gold mining: Is technological learning overcoming the declining in ore grades?. J. Environ. Account. Manag. 1 (1), 85-101.

Iglesias-Émbil, M., Valero, A., Ortego, A., Villacampa, M., Vilaró, J., Villalba, G. (2020). Raw material use in a battery electric car - a thermodynamic rarity assessment. Resour. Conserv. Recy. 158, 104820.

IEA (2021a). The Role of Critical Minerals in Clean Energy Transitions. World Energy Outlook Special Report. International Energy Agency.

IEA (2021b). Net Zero by 2050. A Roadmap for the Global Energy Sector. International Energy Agency.

Mudd, G.M. (2007). The Sustainability of Mining in Australia: Key Production Trends and Their Environmental Implications for the Future. Research Report, Published by Monash University, Australia.

Ortego, A., Valero, Alicia, Valero, Antonio, Iglesias-Embil, M. (2018). Downcycling in automobile recycling process: A thermodynamic assessment. Resour. Conserv. Recy. 136, 24-32.

Ortego, A., Calvo, G., Valero, Alicia, Iglesias-Émbil, M., Valero, Antonio, Villacampa, M. (2020). Assessment of strategic raw materials in the automobile sector. Resour. Conserv. Recycl. 161, 104968.

Reuter, M.A., van Schaik, A., Ignatenko, O., de Haan, G.J. (2006). Fundamental limits for the recycling of end-of-life vehicles. Miner. Eng. 19 (5), 433-449.

Rodríguez, O., Alguacil, F.J., Escudero, E., García-Díaz, I., Fernández, P., Sotillo, B., López, F.A. (2020). Recovery of niobium and tantalum by solvent extraction from Sn-Ta-Nb mining tailings. RSC Adv. 10 (36), 21406-21412.

Sonderegger, T., Berger, M., Alvarenga, R., Bach, V., Cimprich, A., Dewulf, J., Frischknecht, R., Guinée, J., Helbig, C., Huppertz, T., Jolliet, O., Motoshita, M., Northey, S., Rugani, B., Schrijvers, D., Schulze, R., Sonnemann, G., Valero, A., Weidema, B.P., Young, S.B. (2020). Mineral resources in life cycle impact assessment-part I: a critical review of existing methods. Int. J. Life Cycle Assess. 25, 784-797.

Valero Alicia, Valero Antonio, Calvo, G., Ortego, A. (2018a). Material bottlenecks in the future development of green technologies. Renew. Sustain. Energy Rev. 93, 178-200.

Valero Alicia, Valero Antonio, Calvo, G., Ortego, A., Ascaso, S., Palacios, J.L. (2018b). Global material requirements for the energy transition. An exergy flow analysis of decarbonisation pathways. Energy 159, 1175-1184.

Valero Antonio, Valero Alicia (2019). Thermodynamic Rarity and Recyclability of Raw Materials in the Energy Transition: The Need for an In-Spiral Economy. Entropy 21 (9), 873.

Valero, A., Magdalena, R., Calvo, G., Ascaso, S., Círez, F., Ortego, A. (2021). Eco-credit system to incentivise the recycling of waste electric and electronic equipment based on a thermodynamic approach. Int. J. Exergy 35 (1).



How to Cite

Valero, A. ., Valero, A. ., & Calvo, G. . (2021). Summary and critical review of the International Energy Agency’s special report: The role of critical minerals in clean energy transitions. Revista De Metalurgia, 57(2), e197.