Copper in renewable energy
Renewable energy sources such as solar, wind, tidal, hydro, biomass, and geothermal have become significant sectors of the energy market. The rapid growth of these sources in the 21st century has been prompted by the increasing costs and environmental impact of fossil fuels, which has led to a proposed phase out of fossil fuel use.
Source: Wikipedia — Copper in renewable energy (CC BY-SA 4.0)