CTEEP

What CTEEP does

CTEEP (Companhia de Transmissão de Energia Elétrica Paulista S.A.), now operating commercially as ISA ENERGIA BRASIL, is Brazil's largest electricity transmission utility, holding 34 regulated concessions granted by ANEEL (Agência Nacional de Energia Elétrica) under which it transmits approximately 30% of all electricity in Brazil and 95% of the energy transmitted in São Paulo state. The company's owned and operated assets include high-voltage transmission lines, substations, underground transmission corridors, and Flexible Alternating Current Transmission Systems (FACTS) — most notably the first Static Synchronous Series Compensator (SSSC) installed in the Brazilian national electrical system, energized in December 2025 at the Ribeirão Preto Substation to provide dynamic grid stability. It is also executing a portfolio of large-scale greenfield transmission projects including Piraquê (R$ 4.4 billion in Espírito Santo, completed 16 months ahead of ANEEL schedule), Serra Dourada, Riacho Grande, Itatiaia, Água Vermelha, Jacarandá, and Minuano, and is piloting novel concepts such as automatic splicing on 138 kV lines (reducing cable connection time by 87.5%) and solar generation in transmission-line safety zones.

CTEEP earns revenue exclusively through ANEEL-regulated transmission tariffs set under the RAP (Receita Anual Permitida) mechanism, which provides a deterministic return on its Regulatory Asset Base under long-term concession agreements. The company does not sell to retail consumers; rather, it provides wholesale grid services to the Brazilian National Interconnected System (SIN), serving power generators, distribution utilities, and large industrial energy consumers. The go-to-market model is not sales-led in the traditional sense — new business is won through ANEEL-organized competitive transmission auctions (leilões) — making regulatory access and concession performance the primary commercial drivers.

The company is majority-owned and controlled by ISA (Interconexión Eléctrica S.A.), a Colombian multinational infrastructure operator with businesses across Latin America in energy transmission, highways, and telecommunications. CTEEP is publicly traded on OTCMKTS under the ticker CTPTY, employs approximately 1,700 direct staff in Brazil, and is headquartered in São Paulo with operations across multiple Brazilian states. Its strategic positioning emphasizes the energy transition (Net Zero 2050 commitment, Green Bonds framework, the award-winning Conexão Jaguar emissions compensation program), innovation leadership in transmission technology, and ESG credentials — including four consecutive years on the B3 ISE Sustainability Index (29th overall, 6th in sector) and 2026 Great Place to Work certification.

Name

CTEEP

Legal name

CTEEP - Companhia de Transmissão de Energia Elétrica Paulista S.A.

Website

https://isacteep.com.br

Company type

Public

Founded year

1999

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

CTEEP (doing business as ISA ENERGIA BRASIL) is Brazil's largest electricity transmission utility, operating 34 ANEEL concessions that transmit roughly 30% of the country's electricity and 95% of São Paulo state's energy through high-voltage lines, substations, and FACTS technology.

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 Services (4911), Switchgear & Switchboard Apparatus (3613), Power, Distribution & Specialty Transformers (3612)

akta.pro primary industry

HV Transmission Asset Owners (Transmission Companies/Transcos) (EUADAAAC)

akta.pro secondary industries

Testing, Commissioning, Maintenance & Retrofit/Modernization (Substations/Switchgear) (EUADACAL), Substations, Transformers & Grid Step-Up Facilities (EHV Substations, GSU Transformers) (EUAMAFAE), Distribution Network Construction (Feeders, Laterals, Service Drops) (IMAFAHAC)

Keywords

• Electricity transmission services
• High voltage transmission
• Energy transmission infrastructure
• Regulated utility services
• Power grid transmission

Headquarters

HQ city

Vila Olímpia

HQ country

Brazil

HQ region

Latin America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Operations, Infrastructure, Personnel, Technology or R&D, Supply Chain, Others

Revenue model

1. Regulated Transmission Tariffs: Revenue is generated through regulated transmission tariffs under long-term government concessions granted by ANEEL. The company earns a regulated return on its asset base (RAB) for operating and maintaining transmission infrastructure. Revenue is deterministic and stable, derived from 34 transmission concessions across Brazil, with 95% of São Paulo state's energy transmission under its operation.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels6 records

Core offering

CTEEP operates as a regulated electricity transmission utility in Brazil, providing bulk power transmission services through 34 ANEEL-granted concessions. The company owns and operates high-voltage substations, overhead and underground transmission lines that transport approximately 30% of all electricity consumed in Brazil and 95% of the energy transmitted in São Paulo state. Revenue is earned through regulated transmission tariffs (RAP - Receita Anual Permitida) under long-term concession agreements with the Brazilian regulator.

Product overview

ISA ENERGIA BRASIL (formerly CTEEP) operates as Brazil's leading energy transmission company with 34 concessions handling approximately 30% of the nation's electricity and 95% of São Paulo state transmission. The company's core offering is bulk electric power transmission infrastructure and services. Its portfolio includes high-voltage transmission lines (including underground solutions), the pioneering FACTS/SSSC technology system for grid optimization, and major transmission projects such as Serra Dourada, Piraquê, and others. The company complements its transmission operations with innovation initiatives including automatic splicing technology and solar generation feasibility studies, alongside sustainability programs such as Net Zero 2050, the Conexão Jaguar carbon compensation program, and a Green Bonds Framework for sustainable financing.

Differentiator

Problem solved

Functional benefit

Products and services

• Energy Transmission Services
• Underground Transmission Lines
• Project Serra Dourada
• Project Piraquê
• Project Riacho Grande
• Project Itatiaia
• Project Água Vermelha
• Project Jacarandá
• Project Minuano

Quantifiable outcome

• Reduces cable connection time by up to 87.5% (from approximately 40 minutes to just 5 minutes) with automatic splicing technology
• +2 more outcomes

Named customers1 record

Segments1 record

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Scale indicators7 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Engie Brasil: Major Brazilian energy group with transmission concessions among its generation, transmission, and distribution portfolio. Competes with CTEEP in transmission auctions but operates as a diversified energy incumbent.
• State Grid Brazil (CPFL Energia): Brazilian subsidiary of China State Grid, operating transmission and distribution assets. Comparable as a large-scale, capital-backed transmission operator in the same regulatory framework as CTEEP.
• National Grid plc: UK-headquartered regulated TSO with significant US operations, operating high-voltage transmission infrastructure under stable regulatory frameworks. Comparable as an international benchmark for regulated transmission utilities.
• Iberdrola (through Neoenergia): Spanish global utility with Brazilian subsidiary Neoenergia operating transmission, distribution, and generation assets in Brazil. Competes in the same ANEEL-regulated transmission market as CTEEP.
• Red Eléctrica de España (Redeia): Spanish TSO with European and Latin American (via subsidiary) operations; one of the world's leading regulated transmission system operators. Highly comparable business model as a pure regulated transmission utility.
• ISA (Interconexión Eléctrica S.A.): Colombian multinational parent and controller of CTEEP/ISA ENERGIA BRASIL; operates transmission, road, and telecom concessions across Latin America. Directly comparable as Latin America's largest electricity transmission operator, with CTEEP as its flagship subsidiary.

Direct peers

• TAESA (Transmissora Aliança de Energia Elétrica): One of the largest pure-play electric transmission companies in Brazil, listed on B3 (TAEE11). Directly competes with CTEEP in the same ANEEL transmission auctions and operates a comparable multi-state concession portfolio under identical regulated tariff rules.
• Alupar Investimentos: Brazilian publicly listed transmission company (ALUP11) that owns and operates high-voltage transmission concessions across Brazil. Competes head-to-head with CTEEP in ANEEL auctions with similar business model and regulatory exposure.
• Chesf (Eletrobras subsidiary): Brazilian federal transmission utility focused on the Northeast region, also under Eletrobras and regulated by ANEEL. Direct peer operating in overlapping transmission corridors serving Brazil's grid.
• Furnas (Eletrobras subsidiary): Brazilian federal transmission utility and subsidiary of Eletrobras, operating extensive high-voltage transmission lines and substations under ANEEL regulation. Direct competitor in transmission infrastructure and similar regulated-return model.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks4 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/@ISAENERGIABRASILOficial
• Facebookfacebook.com/isaenergiabrasil
• LinkedInlinkedin.com/company/isaenergiabrasil
• Instagraminstagram.com/isaenergiabr

Compliance2 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 CTEEP