SEMI
Alcalá de Henares, Madrid, Spain
About
Founded in 1919, SEMI is a private headquartered in Alcalá de Henares, Spain specializing in Solar, Wind, Hydro.
SEMI is a construction and industrial engineering firm with over 100 years of experience in the electrical and energy sectors. Originally founded in 1919, the company became part of Grupo ACS in 1988. SEMI has established itself as a leader in renewable energy projects, including solar photovoltaic installations (32.8 MW), wind farms (50 MW), and solar thermal systems. The company operates across multiple continents with subsidiaries in Europe, Asia, Africa, and the Americas. Key competencies include electrical infrastructure development, railway electrification systems, telecommunications networks, and energy distribution systems. SEMI has undertaken significant projects including the Spain-France electrical interconnection, high-speed railway catenaries for 350 km/h, and various renewable energy installations. The company maintains ISO certifications for quality management and environmental standards.
Headquarters
Alcalá de Henares, Spain
Founded
1919
Company Type
Private
Business Models
Value Chain
Projects
Pecasa Wind Farm
Photovoltaic Solar Plants
Spain-France Electrical Interconnection
NASA Goddard Space Flight Center Building
Metro de Granada Substation
Certifications & Awards
Certifications
Quality Management System
Environmental Management System
Occupational Health and Safety
European Interoperability Certificate