Martifer began its activity in 1990, in the steel structures sector. Today, in the year that celebrates its 20th anniversary, Martifer SGPS SA is a holding company of a group of enterprises focused on two different sectors, Metallic Construction and Renewable Energy.  The Renewable Energy sector has three main business areas, Energy Equipment for wind energy (through Martifer Energy Systems), Solar (Martifer Solar) and RE Developer - development of wind farms (Martifer Renewables).

Martifer SGPS SA is the holding company of the Group, responsible for the definition of rules, policies and the strategic orientation of the entire Group.

The businesses areas act independently, although following the strategic orientations defined at holding level, with annual budgets and business plan approved by the Board of Martifer.

In order to guarantee the operating efficiency of the all Group,  the corporate centre  acts as the shared service provider to Group companies and also offers a range of other services, on a competitive basis, but mainly to Group companies.

The average number of employees of the holding company and of Martifer Innovation and Management was 170 people in 2009.