Acciona is the parent company of a construction group. Co. is engaged in general construction activities in the areas of civil engineering and buildings, including railways, marine and hydraulic works, motorways and airports, town planning, conduits, pavements, parking lots, and industrial and urban buildings. In addition, Co. is engaged in the provision of real estate services, the operation of parking lots, telecommunications, services, ecology and alternative means of energy. Co.'s operations are organized in six business divisions: Infrastructures, Real Estate, Energy, Water, Environmental & Urban Services and Logistic & Transport Services.

ACS Actividades de Construccion y Servicios is a holding company. Through its subsidiaries, Co.'s activities are divided into the following areas: Construction, engaged in the construction of civil works, and residential and non-residential building construction; industrial services, engaged in the development of applied engineering services, installations and the maintenance of industrial infrastructures in the energy, communications and control systems sectors; services, groups together environmental services, the outsourcing of building maintenance services, logistics and transport services; and concessions, mainly engaged in transport infrastructure concessions.

Mapfre is an insurance company based in Spain. Co. is the parent company of a group engaged in the underwriting and provision of insurance in Spain and abroad. Insurance policies provided include: life, non-life, accident, home-owner, general and health. Through its subsidiaries, Co. is also engaged in the provision of reinsurance, the management of investment funds, pension funds and pension plans, real estate and related services. On the domestic market, Co.'s activities include managing investment funds, pension funds and pension plans, real estate and other service businesses.

Talgo is engaged in designing, manufacturing, repairing and maintaining the railway rolling stock, as well as the manufacturing, assembling, repairing and maintaining the engines, machinery and parts of the railway systems. Co. has an industrial presence in seven countries: Spain, Germany, Kazakhstan, Uzbekistan, Russia, Saudi Arabia and U.S.A. Co. has an active fleet in Europe, Asia and North America that comprises of 94 high-speed trains and more than 1,400 Talgo tilting passenger cars. Also, Co. purchases, redesigns, constructs, leases and sells all types of real estate.