Martifer SGPS, S.A. operates in the metallic constructions and renewable energy development sectors worldwide. It operates through Metallic Constructions, Naval Industry, and Renewables segments. The Metallic Constructions segment engages in the construction activities involving metal mechanical construction, aluminum, and glass façades, as well as infrastructures for oil and gas. The Naval Industry segment involved in shipbuilding, as well as provides ship repair services. The Renewables segment engages in the development, licensing, building, and operating of renewable energy projects, including wind and solar power projects. The company was founded in 1990 and is headquartered in Oliveira de Frades, Portugal.