The Dirty Truth About Clean Tech: Europe's Quest for Sustainable Materials.Welcome to the Weekend Read. Today we dive into the European Commission's Joint Research Centre publication, "Substitution and Reduction of Critical and Strategic Raw Materials in Clean Energy Technologies." This 70-page official EU document published in 2025 is a critical "weekend read" for anyone trying to understand the paradox at the heart of our clean energy transition.We're talking about the irony of clean energy technologies relying heavily on critical raw materials (CRMs) often mined in ways that are far from clean, sustainable, or ethical. The EU is committed to a sustainable and resilient energy future, but its dependence on imported raw materials from a limited number of suppliers poses significant risks and raises concerns about environmental and social impacts, including resource depletion, pollution, and labor issues.This report offers evidence-based scientific support for European policymaking and sets out to explore and assess solutions to reduce or eliminate the use of these CRMs and strategic raw materials (SRMs) in key clean energy technologies within the EU. We'll be breaking down its insights on advanced materials—rationally designed materials with new or enhanced properties—and their potential to lessen this dependency, ideally while also improving performance, extending lifetime, or lowering costs.Join us as we explore the current landscape and potential of these solutions across five crucial energy technologies:BatteriesWind turbinesSolar photovoltaicsFuel cells and electrolysersElectric-vehicle motorsThe document identifies the most effective substitution solutions at various stages of development, from commercial to R&D, and critically highlights the possible trade-offs involved in terms of durability, lifetime, cost, and environmental and social impacts. We'll unpack the challenges, from supply chain vulnerabilities exacerbated by geopolitical tensions and market disruptions, to the cost volatility and significant environmental concerns linked to CRM extraction and processing.Tune in to understand how Europe aims to tackle this pressing policy challenge: ensuring a secure and sustainable energy transition by reducing its dependence on these essential, yet problematic, materials.Ierides, M., Nohl, L., Alves Dias, P., Nohl, M., Blagoeva, D. et al., Substitution and reduction of critical and strategic raw materials in clean energy technologies – An overview of solutions using advanced materials, Publications Office of the European Union, 2025,  https://data.europa.eu/doi/10.2760/5159022

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