<p>The emerging new global energy system requires new materials that were not traditionally in high demand. Their currently known reserves are often small, technically difficult to obtain, or concentrated in politically challenging countries. Governments and companies are paying growing attention to ensuring that the clean energy transition can access sufficient quantities of such materials at reasonable prices.</p>

<p>What are the key materials for energy transition? What critical components are required for solar, wind, battery and other new energy systems? How will supply and demand of each evolve, and where are they located? What can be done to substitute, recycle or reduce the use of each? What are the geopolitical implications associated with the availability of such materials?</p>
