Interconexión Eléctrica S.A. E.S.P. IESFL

Company Overview

Interconexión Eléctrica S.A. E.S.P. (ISA) is a Colombian infrastructure company focused on energy transmission, road concessions, and telecommunications infrastructure across Latin America. The company operates primarily in the electric power industry through high-voltage transmission networks, while also maintaining significant operations in transportation infrastructure and digital connectivity. ISA is publicly traded in Colombia, and a controlling stake is held by Ecopetrol S.A., Colombia’s state-controlled energy company. The company’s core revenue drivers are regulated electricity transmission assets, concession-based road infrastructure projects, and fiber-optic telecommunications networks.

ISA’s principal business lines are organized through subsidiaries operating in electric energy transmission, toll-road concessions, and telecommunications infrastructure services. The company serves utilities, governments, telecommunications operators, industrial customers, and energy market participants across several Latin American countries. Its strategic positioning is supported by long-term regulated concession contracts, geographically diversified infrastructure assets, and operational expertise in managing critical infrastructure networks. Founded in 1967 in Colombia as a state-backed power transmission entity, ISA expanded over time into a multinational infrastructure platform through regional acquisitions and infrastructure concessions.