METLEN ENERGY & METALS PLC operates as an integrated industrial and energy company, focusing on the development, construction, and operation of energy projects, including thermal units and renewable energy sources (RES). The company also engages in the retail supply of electricity and natural gas, along with investments in grid infrastructure and battery storage. In the metals sector, METLEN is involved in the vertically integrated production of bauxite, alumina, and primary aluminium, while expanding into circular metallurgy and critical metals. The company serves a diverse customer base across multiple geographies, including Greece and other European markets.