Look just beneath the surface of many of the technologies powering the energy transition and there’s a red metallic glint. Copper is a vital part of green infrastructure from grids to wind turbines, and a recent price surge threatens to make decarbonization more costly. Copper has doubled from the lows seen a year ago and is near a nine-year high. Amid predictions of a new commodity supercycle kicking off, many analysts say the top hasn’t yet been reached for a metal that’s core to the green energy drive.