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on Mining |
| By: | Dugoua, Eugenie; Noailly, Joëlle |
| Abstract: | This paper examines the patterns and mechanisms of global clean technology diffusion over the last two decades. We document four stylized facts: uneven sectoral progress favoring power and light transport; China’s dominance in innovation and manufacturing; the role of modularity in driving cost declines; and limited adoption in developing economies. Through case studies of solar, electric vehicles, and hydrogen, we analyze how policy and infrastructure enable scale. Finally, we assess emerging challenges for the next phase of diffusion, including critical mineral constraints, artificial intelligence, and geopolitical fragmentation. |
| Keywords: | clean technology diffusion; climate change mitigation; renewable energy; industrial policy; solar photovoltaics; electric vehicles; hydrogen |
| JEL: | O33 Q55 |
| Date: | 2026–03 |
| URL: | https://d.repec.org/n?u=RePEc:ehl:lserod:137824 |
| By: | Andrea Bastianin (Department of Economics, Management, and Quantitative Methods, University of Milan and Fondazione Eni Enrico Mattei); Chiara Casoli (Fondazione Eni Enrico Mattei and InsIDE Lab, Department of Economics, University of Insubria); Evzen Kocenda (Institute of Economic Studies, Charles University and CESifo); Xiao Li (Department of Economics and Management, University of Brescia) |
| Abstract: | The global energy transition is reshaping commodity demand, yet its implications for commodity risk transmission remain unclear. We analyze connectedness among Energy Transition Metals (ETMs) – a subset of metals that are key inputs in clean energy technologies – energy commodities, and industrial metals using a Quantile Factor VAR framework. We document strong state dependence: spillovers are substantially larger in the tails of the return distribution than at the median. While crude oil remains influential, its dominance weakens post-Covid as ETMs, particularly base ETMs, gain centrality. A complementary event-study shows ETM-related policy announcements amplify spillovers in extreme regimes, indicating structural reconfiguration and systemic implications. |
| Keywords: | Raw materials, Energy transition, Quantile Connectedness, Spillover effects, Commodity Markets |
| JEL: | C32 C58 Q02 Q41 Q43 Q48 |
| Date: | 2026–04 |
| URL: | https://d.repec.org/n?u=RePEc:fem:femwpa:2026.13 |
| By: | Bastianin, Andrea; Casoli, Chiara; Kocenda, Evzen; Li, Xiao |
| Abstract: | The global energy transition is reshaping commodity demand, yet its implications for commodity risk transmission remain unclear. We analyze connectedness among Energy Transition Metals (ETMs) – a subset of metals that are key inputs in clean energy technologies – energy commodities, and industrial metals using a Quantile Factor VAR framework. We document strong state dependence: spillovers are substantially larger in the tails of the return distribution than at the median. While crude oil remains influential, its dominance weakens post-Covid as ETMs, particularly base ETMs, gain centrality. A complementary event-study shows ETM-related policy announcements amplify spillovers in extreme regimes, indicating structural reconfiguration and systemic implications. |
| Keywords: | Environmental Economics and Policy, Resource/Energy Economics and Policy |
| Date: | 2026–04–03 |
| URL: | https://d.repec.org/n?u=RePEc:ags:feemwp:396404 |
| By: | Aguilar, Pablo; Darracq Pariès, Matthieu; Jouvanceau, Valentin; Meunier, Baptiste; Spital, Tajda |
| Abstract: | In April and in October 2025 China imposed export controls on rare earths amid escalating trade tensions with the United States. Although these measures were too short-lived to generate macroeconomic effects, they signalled China’s ability to draw on its dominant position in the rare earth supply chain. This paper provides a structured assessment of the potential macroeconomic consequences associated with rare earth supply disruptions. First, it documents that exposure to rare earth supply disruptions is concentrated in high-tech and security-sensitive sectors including automotive, electronics and defence-related industries. Second, drawing on earlier episodes of Chinese export restrictions on critical minerals (notably in 2010 and 2023), it highlights two key mitigating forces from the targeted countries’ perspective: practical and strategic constraints on China’s ability to implement strict export bans, and innovation-led substitution by targeted countries. Third, the paper quantifies the global macroeconomic implications of a hypothetical scenario of stringent but partial Chinese export restrictions on rare earths lasting for 18 months. To do so, the analysis combines, for the various segments of the transmission chain, a partial equilibrium setup, a closed-economy DSGE model, and the multi-country multi-sector dynamic model of Aguilar et al. (2026). The main results, across specifications, suggest estimated output losses for the United States ranging between 0.3% and 0.6%, with the largest impacts concentrated in automotive and electronics manufacturing. The results at the same time highlight the sensitivity of model-based estimates to assumptions on the substitutability of rare earths and the severity of restrictions. JEL Classification: F13, F17, C63, C68, Q37 |
| Keywords: | critical minerals, export ban, export restrictions, supply chain, trade modelling |
| Date: | 2026–03 |
| URL: | https://d.repec.org/n?u=RePEc:ecb:ecbops:2026384 |
| By: | Joshua Ostry (Geneva Graduate Institute and CEPR) |
| Abstract: | This paper constructs a high-frequency, news-based measure of rare earth supply shocks to examine how disruptions in these critical inputs affect global firm valuations. Using news articles between 2021 and 2025, I identify exogenous rare earth supply events, distinguishing between Chinese trade-restriction and global production shocks. Using a sample of 5800 public firms, I show that negative rare earth supply shocks, which are expected to raise input prices, cause significant and persistent declines in the equity prices of rare earth-exposed firms, especially those in the battery, semiconductor, and motor vehicle industries. Both trade and production shocks depress valuations, though trade restrictions shocks are particularly impactful. These findings highlight a financial channel through which the weaponization of critical-material supply chains transmits across global markets. |
| Keywords: | Rare earth elements; critical minerals; supply chains; supply shocks; large language models; geoeconomics; financial markets |
| JEL: | G14 F14 F51 Q02 |
| Date: | 2026–04–09 |
| URL: | https://d.repec.org/n?u=RePEc:gii:giihei:heidwp10-2026 |
| By: | Hugo Quemin (EDYTEM - Environnements, Dynamiques et Territoires de Montagne - USMB [Université de Savoie] [Université de Chambéry] - Université Savoie Mont Blanc - CNRS - Centre National de la Recherche Scientifique - Fédération OSUG - Observatoire des Sciences de l'Univers de Grenoble, Labex ITTEM - Laboratoire d'excellence Innovations et transitions territoriales en montagne - USMB [Université de Savoie] [Université de Chambéry] - Université Savoie Mont Blanc - CNRS - Centre National de la Recherche Scientifique - INRAE - Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement - UGA - Université Grenoble Alpes); Antoine Latarge (EDYTEM - Environnements, Dynamiques et Territoires de Montagne - USMB [Université de Savoie] [Université de Chambéry] - Université Savoie Mont Blanc - CNRS - Centre National de la Recherche Scientifique - Fédération OSUG - Observatoire des Sciences de l'Univers de Grenoble, Labex ITTEM - Laboratoire d'excellence Innovations et transitions territoriales en montagne - USMB [Université de Savoie] [Université de Chambéry] - Université Savoie Mont Blanc - CNRS - Centre National de la Recherche Scientifique - INRAE - Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement - UGA - Université Grenoble Alpes); Kaarina Efraim (National Museum of Namibia); Marie Forget (EDYTEM - Environnements, Dynamiques et Territoires de Montagne - USMB [Université de Savoie] [Université de Chambéry] - Université Savoie Mont Blanc - CNRS - Centre National de la Recherche Scientifique - Fédération OSUG - Observatoire des Sciences de l'Univers de Grenoble); Mélanie Duval (EDYTEM - Environnements, Dynamiques et Territoires de Montagne - USMB [Université de Savoie] [Université de Chambéry] - Université Savoie Mont Blanc - CNRS - Centre National de la Recherche Scientifique - Fédération OSUG - Observatoire des Sciences de l'Univers de Grenoble, Labex ITTEM - Laboratoire d'excellence Innovations et transitions territoriales en montagne - USMB [Université de Savoie] [Université de Chambéry] - Université Savoie Mont Blanc - CNRS - Centre National de la Recherche Scientifique - INRAE - Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement - UGA - Université Grenoble Alpes, Rock Art Research Institute - WITS - University of the Witwatersrand [Johannesburg]) |
| Abstract: | This article examines how semi-precious stone supply chains in Namibia are territorially embedded and integrated into global markets. It highlights the local dynamics of artisanal extraction in the Erongo region and analyzes the requalification processes that transform these stones as they move from extraction to circulation. The study is based on fieldwork conducted between 2023 and 2025 in the mining sites of Xoboxobos and Tubusis, combining participant observation and interviews with miners, intermediaries, and small-scale mining professionals. It first explores the territorialization of mining practices, then examines the role of intermediaries in the circulation of semi-precious stones, and finally interrogates the mechanisms of deterritorialization that integrate these resources into global supply chains. By jointly mobilizing the concepts of extractive territoriality and scalability, this article shows how the local anchoring of semi-precious stone extraction in Namibia structures market dynamics. It also reveals how supply chains adjust their procurement practices to integrate into global circuits. |
| Abstract: | Cet article interroge l'ancrage territorial de l'approvisionnement en pierres semi-précieuses en Namibie et son intégration aux marchés mondialisés. Il met en lumière les dynamiques locales de l'extraction artisanale dans la région de l'Erongo et examine les processus de requalification qui transforment ces pierres, de leur extraction à leur mise en circulation. L'étude s'appuie sur une enquête de terrain menée entre 2023 et 2025 dans les sites miniers de Xoboxobos et Tubusis, combinant observations participantes et entretiens avec des mineurs, intermédiaires et professionnels du secteur. L'article explore l'inscription territoriale des pratiques extractives, avant d'analyser le rôle des intermédiaires dans la mise en circulation des pierres, puis d'interroger les mécanismes de déterritorialisation qui intègrent ces ressources aux circuits globaux. En mobilisant conjointement les notions de territorialité extractive et de scalabilité, cet article met en lumière comment les ancrages locaux de l'extraction des pierres semi-précieuses en Namibie structurent les dynamiques de mise en marché, tout en révélant les processus par lesquels ces filières parviennent à s'insérer dans des circuits globaux en ajustant leurs pratiques d'approvisionnement. |
| Keywords: | supply chains, territorialities, small-scale mining, artisanal mining, semi-precious stones, value chains, scalability, extraction |
| Date: | 2025 |
| URL: | https://d.repec.org/n?u=RePEc:hal:journl:hal-05438994 |
| By: | Niloofar Adel (Fondazione Eni Enrico Mattei); Andrea Bastianin (University of Milan and Fondazione Eni Enrico Mattei); Luca Pedini (Marche Polytechnic University and Fondazione Eni Enrico Mattei); Marta Visconti (Fondazione Eni Enrico Mattei) |
| Abstract: | We quantify the contribution of Venezuela’s oil sector collapse to changes in global oil market responsiveness after 2007. We extend the multi-country structural model of Baumeister and Hamilton (2024) by modeling Venezuela explicitly and constructing a counterfactual production path that abstracts from the 2007 institutional shift. This counterfactual isolates the mechanical contribution of Venezuelan supply and provides an upper bound on its impact. We document a sharp decline in global short-run supply elasticity and a more than doubling of the oil price multiplier after 2007. Decomposition results show that this increase is driven primarily by a reduction in the effective inventory-related adjustment margin, with changes in other producers’ supply elasticities accounting for most of the remainder. By contrast, Venezuela’s contribution through its production share and contemporaneous supply elasticity is small. Restoring Venezuelan output raises global supply elasticity modestly but has limited effects on price amplification. |
| Keywords: | Crude oil, Sanctions, Supply shocks, Venezuela, OPEC |
| JEL: | C32 E32 L71 Q43 |
| Date: | 2026–03 |
| URL: | https://d.repec.org/n?u=RePEc:fem:femwpa:2026.12 |
| By: | Yasaman Sarabi (HWU - Heriot-Watt University [Edinburgh]); Paola Tubaro (CNRS - Centre National de la Recherche Scientifique, ENSAE Paris - École Nationale de la Statistique et de l'Administration Économique - Groupe ENSAE-ENSAI - Groupe des Écoles Nationales d'Économie et Statistique - IP Paris - Institut Polytechnique de Paris, CREST - Centre de Recherche en Économie et Statistique - ENSAI - Ecole Nationale de la Statistique et de l'Analyse de l'Information [Bruz] - Groupe ENSAE-ENSAI - Groupe des Écoles Nationales d'Économie et Statistique - X - École polytechnique - IP Paris - Institut Polytechnique de Paris - ENSAE Paris - École Nationale de la Statistique et de l'Administration Économique - Groupe ENSAE-ENSAI - Groupe des Écoles Nationales d'Économie et Statistique - IP Paris - Institut Polytechnique de Paris - CNRS - Centre National de la Recherche Scientifique) |
| Abstract: | Water is a key sector with major repercussions on health, the natural environment, and the economy. Public ownership and control of water infrastructures are the norm in most countries. Yet some private water companies emerged as early as the nineteenth century. In the last few decades, many governments, especially in developing countries, have sought the involvement of the private sector. This work contributes to the extant literature by developing a multi-disciplinary framework to look at private participation in the sector in terms of the overall trends of governments and companies' tendencies to form strategic alliances on water projects. In this study, the World Bank database on Private Participation in Infrastructure (PPI) is used and Social Network Analysis and GLM are implemented as analytical tools. This study finds that alliances between governments and companies on PPI projects are positively impacted by positional and relational embeddedness. Furthermore, governments and companies with a shared language and those that are geographically proximate are more likely to engage in PPI projects. A key policy finding is that on average, countries engaged in more PPI projects have a higher Sustainable Development Goal (SDG) 6 (Clean Water & Sanitation for All) category score. |
| Keywords: | Private Participation in Infrastructure, Water infrastructures, Social Network Analysis, Interorganizational Relationships, Public-Private Partnerships |
| Date: | 2025 |
| URL: | https://d.repec.org/n?u=RePEc:hal:journl:hal-05089203 |
| By: | Hümmer, Matthias |
| Abstract: | Megaproject research has shown repeatedly that large, technologically demanding, and politically exposed projects are prone to cost escalation, delay, and governance breakdown. Existing project complexity research has produced influential classifications of structural complexity, uncertainty, and stakeholder interaction, but it is less precise about when projects pass from difficult coordination into loss of controllability. This article develops a capacity-based theory of complexity control through a theory-elaboration reconstruction and extension of Huemmer (2020) in dialogue with project complexity, megaproject, and project resilience scholarship. The article argues that complexity becomes critical when the structural variety generated by the project system exceeds the regulatory variety available through the 4M architecture of human, machine, method, and material. Ashby’s (1956, 1958) law of requisite variety is used not as a total theory of megaproject governance, but as a cybernetic condition of controllability. On that basis, the article explains how capacity deficits create vulnerability, why overload propagates across interfaces, how complexity shifts from latent to acute states over the project lifecycle, and why some projects may reach a point of no return at which ordinary control routines no longer recover stability. The contribution is fourfold: reconstruction of a German-language framework for an international audience; clarification of the Ashby-based mechanism; refinement of the 4M architecture as a proto-operational logic; and derivation of propositions, an illustrative diagnostic, and a research agenda. The article is conceptual rather than empirical and should be read as reconstruction, extension, and mechanism clarification rather than ex nihilo theory creation. |
| Date: | 2026–03–31 |
| URL: | https://d.repec.org/n?u=RePEc:osf:socarx:3hdn5_v1 |
| By: | Danae Maniatis (SoGE - School of Geography and the Environment [Oxford] - University of Oxford); Kathryn J Jeffery (University of Stirling, UMR AMAP - Botanique et Modélisation de l'Architecture des Plantes et des Végétations - Cirad - Centre de Coopération Internationale en Recherche Agronomique pour le Développement - CNRS - Centre National de la Recherche Scientifique - IRD [Occitanie] - Institut de Recherche pour le Développement - INRAE - Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement - UM - Université de Montpellier) |
| Abstract: | The Congo Basin, comprising the world's second-largest tropical rainforest, presents both critical environmental challenges and unique opportunities for sustainable development. This chapter evaluates key pathways for environmentally sustainable development in the region, with an emphasis on extractive industries, renewable energy, agroforestry, biodiversity conservation, ecotourism, and climate and carbon finance. Using regional indicators such as the Fragile States Index (FSI), Human Development Index (HDI), and Environmental Performance Index (EPI), the authors highlight the structural barriers—including weak governance, institutional fragility, and extreme poverty—that constrain the region's development trajectory. Despite these challenges, the Basin's ecological wealth offers potential for transformative interventions. Strategies such as Reduced-Impact Logging for Climate (RIL-C), sustainable mining practices, decentralized renewable energy systems, and integrated agroforestry models are analyzed for their capacity to reduce emissions, protect biodiversity, and enhance local livelihoods. The chapter further explores the potential of REDD+ and emerging carbon market frameworks to finance conservation and climate mitigation efforts. Emphasizing the role of participatory governance, indigenous knowledge systems, and scientific innovation, the chapter underscores the necessity of context-specific, cross-sectoral approaches to operationalize sustainability in one of the planet's most ecologically and geopolitically complex regions. |
| Keywords: | Reduced-impact logging, Sustainable development, Congo Basin forests, Environmental policy and governance, Climate and carbon finance, Agroforestry systems |
| Date: | 2026 |
| URL: | https://d.repec.org/n?u=RePEc:hal:journl:hal-05572636 |
| By: | Paul Simshauser; Joel Gilmore |
| Keywords: | Renewables, coal, natural gas, dispatchable plant capacity |
| JEL: | D52 D53 G12 L94 Q40 |
| Date: | 2025–11 |
| URL: | https://d.repec.org/n?u=RePEc:enp:wpaper:eprg2604 |
| By: | Samuel Gorohouna (UNC - Université de la Nouvelle-Calédonie, LARJE - Laboratoire de Recherches Juridique et Economique - UNC - Université de la Nouvelle-Calédonie); Heloise Rozier (LMBA - Laboratoire de Mathématiques de Bretagne Atlantique - UBS - Université de Bretagne Sud - UBO EPE - Université de Brest - CNRS - Centre National de la Recherche Scientifique) |
| Keywords: | équipement des ménages, Nouvelle-Calédonie, Activité minière, Inégalités de développement |
| Date: | 2026–03 |
| URL: | https://d.repec.org/n?u=RePEc:hal:journl:hal-05571734 |
| By: | Ece Fisgin; Johannes Fleck; Keith Richards |
| Abstract: | We show that the EU's 2018 retaliation against US steel and aluminum tariffs targeted goods with low US import dependence and high substitutability. For the majority of tariffed goods, the US share of EU imports declined notably and remained below pre-2018 levels even after the retaliatory tariffs were lifted, reflecting asymmetric effects of tariffs on trade diversion. Moreover, although the retaliatory tariffs were instantly and fully passed through to EU importers, the retaliation did not lead to domestic price pressures as we find no evidence for inflationary effects on consumer and producer prices. |
| Keywords: | Trade policy; International trade; Prices |
| JEL: | E31 F13 F14 F42 F62 |
| Date: | 2026–03–20 |
| URL: | https://d.repec.org/n?u=RePEc:fip:fedgif:102987 |