Transelca

What Transelca does

Transelca S.A. E.S.P. is a Colombian electricity transmission utility and a wholly-owned subsidiary of ISA Group (Interconexión Eléctrica S.A. E.S.P.), operating in Colombia's Caribbean region from its headquarters in Puerto Colombia, Atlántico. The company holds 9.809% participation in Colombia's National Transmission System (STN), making it the second-largest participant after Intercolombia. Its core business consists of high-voltage electrical energy transmission and connection services to the National Interconnected System (SIN), delivered through 15+ substations (including Nueva Barranquilla, Santa Marta, Termoguajira, Cuestecitas, and others) operating at voltages from 13.8kV to 220kV across the departments of Atlántico, Magdalena, Cesar, La Guajira, Bolívar, Sucre, and Córdoba.

Transelca's customers comprise four primary segments: electric distribution companies (notably Air-e), power generators (GECELCA, EMGESA), large industrial consumers including mining and metallurgy operators (Carbones de Cerrejón, Drummond, Cerro Matoso, Tenaris TUBOCARIBE), and registered commercializers who contract through XM (Colombia's electricity market administrator). Commercial relationships are formalized via mandate contracts and managed in coordination with XM and the National Operation Council (CNO). Revenue is generated from regulated transmission tariffs set by CREG (Comisión Reguladora de Energía y Gas) under Laws 142 and 143 of 1994, providing a stable, recurring revenue model.

In November 2025, CREG approved that Intercolombia will assume operational representation of Transelca's transmission assets starting January 1, 2026, while Transelca retains ownership and refocuses on new energy business development from the Atlantic Coast under parent ISA's ISA2040 strategy. The company has 101-250 employees, an AAA credit rating from Fitch Ratings Colombia, ISO 27001 certification, and compliance with CREG 075-2021 and Ley 1581/2012. No public revenue figure is disclosed.

Name

Transelca

Legal name

TRANSELCA S.A. E.S.P.

Website

https://transelca.com.co

Company type

Private

Operating status

Operating

Headcount range

101–250 employees

Short description

Transelca S.A. E.S.P. is a Colombian electricity transmission utility and ISA Group subsidiary operating 15+ high-voltage substations across Colombia's Caribbean region, holding 9.809% of the National Transmission System and serving generators, distribution operators, and large industrial consumers.

Ownership category

akta.pro rank

Product category

Electricity Transmission Services

NAICS

Electric Bulk Power Transmission and Control (221121), Electric Power Transmission, Control, and Distribution (22112), Electric Power Generation, Transmission and Distribution (2211)

SIC

Electric, Gas & Sanitary Services (4900), Electric Services (4911)

akta.pro primary industry

National & Regional TSOs (ISO/RTO/Grid Operators) (EUADAAAA)

akta.pro secondary industries

System Operations & Control Centers (EMS/SCADA for Transmission) (EUADAAAG), High-Voltage Electrical Systems (Switchgear, Transformers, Protection & Control) (EUAEAFAA), Testing, Commissioning, Maintenance & Retrofit/Modernization (Substations/Switchgear) (EUADACAL)

Keywords

• Electricity transmission services
• High-voltage grid infrastructure
• Power transmission utility
• Energy connection services
• Substation operations

Headquarters

HQ city

Puerto Colombia

HQ country

Colombia

HQ region

Latin America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Operations, Infrastructure, Personnel, Technology or R&D, Marketing or Sales, Others

Revenue model

1. Energy Transmission Services: Regulated transmission of electrical energy through the National Transmission System (STN) in Colombia's Caribbean region. Revenue is derived from regulated tariffs approved by CREG (Comisión Reguladora de Energía y Gas).
2. Connection to SIN Services: Connection services to the National Interconnected System for companies, with commercial relationships managed through mandate contracts with registered commercializers via XM.

Go-to-market motion2 records

Distribution channels3 records

Marketing channels5 records

Core offering

Transelca transmits electrical energy through Colombia's National Transmission System (STN), holding 9.809% participation in the country's high-voltage grid. The company provides connection services to the National Interconnected System (SIN) for power generators, distribution companies, and large industrial consumers across the Caribbean region. It also operates and maintains 15+ substations and associated transmission lines operating at voltage levels from 13.8kV to 220kV.

Product overview

TRANSELCA S.A. E.S.P. is an electricity transmission company and subsidiary of ISA Group that operates the Sistema de Transmisión Nacional (STN) in Colombia's Caribbean region. The company offers two core services: (1) Transmission of electrical energy through the national grid with 9.809% market participation, and (2) Connection services linking generators and users to the National Interconnected System (SIN). The company also provides maintenance services for electrical infrastructure including substations, transformers, and high-voltage transmission lines (220kV, 110kV, 34.5kV).

Differentiator

Problem solved

Functional benefit

Products and services

• Electric Energy Transmission through the National Transmission System (STN) High-voltage transportation of electrical energy through Colombia's National Transmission System (STN), representing 9.809% of national participation and serving distribution companies, generators, and large industrial consumers connected to the grid in the Caribbean region.
• Connection to the National Interconnected System (SIN) Connection service that links generation assets, distribution operators, and large users to the National Interconnected System (SIN), allowing the physical exchange of electrical energy in the Colombian electricity market. Commercial relationships are administered through mandate contracts with registered commercializers via XM.
• Electrical Infrastructure Maintenance Services Preventive and corrective maintenance activities performed on electrical substations, power transformers, and transmission lines at voltage levels of 220kV, 110kV, 66kV, 34.5kV, and 13.8kV across Colombia's Caribbean region.

Named customers13 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

Nine partnerships are on record, tiered core and minor.

• ISA (Interconexión Eléctrica S.A. E.S.P.)coreStrategic or Co-development PartnerTranselca is a wholly-owned subsidiary of ISA Group. ISA is a major Colombian multinational company specializing in power transmission, highways, and telecommunications across Latin America. Transelca operates as the vehicle for ISA's energy business in Colombia's Caribbean region, aligned with ISA's ISA2040 strategy.
• IntercolombiacoreStrategic or Co-development PartnerIntercolombia will assume representation of Transelca's transmission assets starting January 1, 2026. Intercolombia will become the sole operator of transmission assets, consolidating operation and administration under a more efficient and reliable scheme. Transelca will continue as owner of the assets, focusing on new energy business development from the Colombian Caribbean Coast.
• XM (Compañía Operadora y Administradora del Mercado Eléctrico Colombiano)coreTechnology or IntegrationXM administers and operates Colombia's electricity market. Commercial relationships with STN customers are conducted through mandate contracts with XM. XM coordinates the commercial aspects of energy transmission services for registered commercializers.
• Superintendencia de Servicios Públicos DomiciliarioscoreOthersGovernment supervisory body that monitors, inspects, and controls Transelca as a public utilities company. Ensures compliance with Colombian regulatory framework for energy transmission.
• Ministerio de Minas y EnergíacoreOthersColombian Ministry of Mines and Energy that establishes laws and regulations governing Transelca's operations in the energy sector.
• CREG (Comisión Reguladora de Energía y Gas)coreOthersColombian Energy and Gas Regulatory Commission that regulates Transelca's transmission activities, sets tariffs, and establishes operational standards for the energy sector.
• Air-ecoreChannel Partner/ Reseller/ DistributorAir-e is a distribution operator (Operador de Red) in Colombia's Caribbean region that receives transmission services from Transelca and distributes electricity to end consumers. Transelca coordinates maintenance activities and service interruptions with Air-e for customer areas.
• ANDESCO (Asociación Nacional de Empresas de Servicios Públicos y Comunicaciones)minorOthersNational association of public utilities companies and communications in Colombia. Transelca is a member participating in industry discussions and best practices sharing.
• CNO (Concejo Nacional de Operación)coreTechnology or IntegrationNational Operation Council that coordinates operational matters for Colombia's electrical grid. Transelca participates as a transmission company in national grid coordination.

Scale indicators3 records

Recent moves5 records

Expansion highlights4 records

Direct peers

• EPSA (Empresa de Energía del Pacífico): EPSA holds 2.658% of Colombia's STN and is a regional TSO serving the Pacific region. Listed among Transelca's customer peers and operates a similar regulated transmission model in another Colombian region.
• ESSA (Electrificadora de Santander): ESSA holds 1.319% of Colombia's STN and operates transmission and distribution in Santander. Comparable as a smaller Colombian regulated TSO with similar business model and CREG oversight.
• EBSA (Empresa de Energía de Boyacá): EBSA holds 0.168% of Colombia's STN and operates transmission in Boyacá. A directly comparable small regional Colombian TSO under CREG regulation.
• EPM (Empresas Públicas de Medellín): EPM holds 6.492% of Colombia's STN and operates transmission assets primarily in Antioquia. It is a direct Colombian TSO peer with a comparable regulated, multi-region utility model.
• CENS (Centrales Eléctricas del Norte de Santander): CENS holds 0.185% of Colombia's STN and serves Norte de Santander. A small but directly comparable Colombian TSO peer under the same regulatory framework.
• Intercolombia: Intercolombia is the largest participant in Colombia's National Transmission System (STN) with 70.994% market share and is taking over operational representation of Transelca's assets from January 2026. It is the closest direct peer in Colombian high-voltage transmission.
• EEB (Empresa de Energía de Bogotá): EEB holds 8.015% of Colombia's STN and operates transmission assets around Bogotá and Cundinamarca. Comparable as another major Colombian TSO with regulated tariff revenue and substation operations.

Regional players

• CELEC EP (Corporación Eléctrica del Ecuador): CELEC is Ecuador's state-owned transmission and generation operator and a regional Latin American TSO peer. Comparable as a regional monopoly transmission utility operating under a similar regulated framework in a neighboring Andean country.

Others

• Air-e: Air-e is the main distribution operator in Colombia's Caribbean region and Transelca's largest distribution customer. Listed as a core channel/strategic partner; comparable as a complementary part of the regulated electricity value chain in the same geography.

Broad incumbents

• ISA (Interconexión Eléctrica S.A. E.S.P.): ISA is Transelca's parent company and a major Latin American transmission conglomerate. As the strategic controlling shareholder, it is the broadest incumbent comparator and sets the strategic direction (ISA2040) under which Transelca operates.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/transelca-s.a.-e.s.p.

Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Transelca