Best infrastructure companies to invest in Spain

Comsa Corporación is a global infrastructure and technology group, with expertise in railways, civil engineering, and building construction. Its inclusion in the ENR Top 250 ranking of international contractors highlights its business outside of Spain and its capability in complex projects.

Cellnex is the leading European operator of wireless telecommunications infrastructure, managing an extensive network of towers. It is considered a growth driver in the technology sector, with a strategic shift towards capital optimization and free cash flow generation.

ACS is a global leader in construction and infrastructure management, with a strong presence in the United States through key subsidiaries. Bank of America recommends it for 2026, highlighting its international leadership and the boom in data center construction in the U.S.

Ferrovial is a leading global operator of transport infrastructure, focusing on toll roads in North America and airports. Bank of America includes it on its favorites list for 2026, anticipating double-digit revaluation potential and significant EBITDA growth.

Acciona is a leading global group in sustainable infrastructure and renewable energy solutions. Its strong international business in renewables and significant investment in R&D keep it a key player in the energy transition and sustainable infrastructure.

Sacyr is an infrastructure and services company with a significant international presence, especially in concessions. Bank of America gives it a Buy rating for 2026, highlighting its pre-selection for major managed lanes projects in the U.S.

Iberdrola is one of the largest energy companies in the world, a leader in renewable energy and smart grids. Its global diversification and network development in the U.S. and UK bring significant benefits, leading the development of wind and solar projects.

Naturgy is a multinational energy company with a strong presence in gas and electricity distribution. Its electricity distributor, UFD, will invest significantly until 2029 to strengthen and digitalize its network in Spain, which is crucial for improving service and capacity.

Redeia, manager of the Spanish electricity system, leads the potential of Ibex 35 energy stocks in 2026. With an upside potential of 11.05% and growing investment in R&D, it is a fundamental pillar for the country's energy infrastructure.

FCC is a global group of citizen services with construction, environment, and water divisions. It appears in the ENR Top 250 ranking of international contractors and is valued for its reputation in infrastructure, participating in important tenders in the U.S.

OHLA is a global infrastructure group with experience in concessions, construction, and services. It ranks among the top Spanish contractors by international business volume, according to the ENR Top 250 ranking, and seeks opportunities in the U.S. market.

Grupo San José is a construction and real estate group with activities in infrastructure, building, and development. It is one of the Spanish companies with the largest international construction business, according to the ENR Top 250 ranking, reflecting its global expansion.

Aldesa is a construction, energy, and concessions group with an international presence. It is included in the ENR Top 250 ranking of international contractors for its foreign business volume, demonstrating its capability and global expansion in the sector.

Sener Engineering Group is an engineering and technology group with projects in infrastructure, energy, marine, and aerospace. It appears in the ENR Top 250 ranking of international contractors, reflecting its capability and presence in global infrastructure projects.