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Interconexion Electrica S.A. (ISA)

Sector: Commercial • Location: Cundinamarca, Colombia

Source: World Bank Group

Project
Active

ISA is responsible for electricity transmission in Colombia. ISA owns about 7,900 KM of transmission lines (80% of the Colombian market, including its participation in Transelca). ISA has also diversified its business operations and in recent years have started operating in the telecommunication sector through its subsidiary Internexa (ISA is currently the second largest telecom company in the cou

Status
Prospective
Sector
Commercial, Government, Power Generation (CCGT), Telecommunications
Location
Cundinamarca, Colombia
Updated
22 Jul 2026
Source
World Bank Group

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The project “Interconexion Electrica S.A. (ISA)” is an infrastructure initiative in the Commercial sector, located in Cundinamarca, Colombia. Taiyo aggregates data on it from World Bank Group.

Participants

Sponsoring Agency

Status

Original status

Active

Taiyo status

Prospective

Taiyo last update

2026-07-22

Contact

Not available for this record.

Description

Description

ISA is responsible for electricity transmission in Colombia. ISA owns about 7,900 KM of transmission lines (80% of the Colombian market, including its participation in Transelca). ISA has also diversified its business operations and in recent years have started operating in the telecommunication sector through its subsidiary Internexa (ISA is currently the second largest telecom company in the country). ISA provides telecom services nationally, but, starting in 2001, the company will expand its services to the US, Mexico and Venezuela, among other countries. The first phase of its privatization occurred in Dec. 2000, when 28.64% of its shares were sold in the local stock exchange and through the banking system. Individuals and four pension funds (Fondo de Pensiones Proteccion, Skandia, Colfondos, and Horizonte) purchased these shares for US$ 45.7 million (Pesos$ 102 billion). In 2001, ISA intended to issue shares in the New York Stock Exchange through American Depository Receipts (ADRs). In 2004 ISA deposited and listed its Level I ADRs with the Security and Exchange Commission permitting trading of its shares over the counter or secondary market. Each ADR represents 25 shares that are traded OTC under the ticker symbol IESFY. In 2005, ISA's participated in the telecommunications sector with its brands INTERNEXA and FLYCOM COMUNICACIONES. In December 2007, a placement of 56.4 million shares was purchased by pension funds and individuals through book-building public offer at a subscription price of $7,076 pesos per share for a total of US $192 million. Approximately 15% (US $28.8 million) were purchased by individuals. This raised the private sector share in ISA to 29.7%. ISA sold shares through a book-building process open to the public between Nov. 30 and Dec. 2 2009. The offer was 2.9 times oversubscribed. The Colombian government, which controls ISA, did not participate in the share offer, and saw its stake in company was diluted to 51.4% of the company from 52.9%, according to ISA's Chief Executive Luis Fernando Alarcon. Approximately US$4.5 mn were invested in the telecom sector Figures for Commit. Inv. in Facilities during the following years were removed because private parties do not control ISA (ownership is less than 51%): 2001 987.5 2002 889.2 2003 742 2004 785.7 2005 921.4

Original sector

Energy

Budget

Location

Country

Colombia

State

Cundinamarca

Source

Source reliability

High

Source

World Bank Group

URL

More Details

Record type

Project

Sector

Commercial, Government, Power Generation (CCGT), Telecommunications

Article published date

2023-02-20

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