EX-8.1 16 ec-20241231xex8d1.htm EX-8.1

Exhibit 8.1

Subsidiaries of Ecopetrol S.A.

The following table sets forth our subsidiaries, their respective countries of incorporation, our percentage ownership in each (both directly and indirectly through other subsidiaries) as of March 31, 2025.

COMPANY | COUNTRY OF INCORPORATION | OWNERSHIP
ALCANOS DE COLOMBIA S.A. E.S.P.** | Colombia | 29,61%
ANDEAN CHEMICALS LIMITED | Bermuda | 100,00%
BLACK GOLD RE LIMITED | Bermuda | 100,00%
CENIT TRANSPORTE Y LOGÍSTICA DE HIDROCARBUROS S.A.S. | Colombia | 100,00%
COLOMBIA PIPELINES LIMITED** | United Kingdom | 51,00%
COMBUSTIBLES LIQUIDOS DE COLOMBIA S.A. E.S.P.** | Colombia | 41,61%
COMPANHIA DE TRANSMISSÃO DE ENERGIA ELÉTRICA PAULISTA** | Brazil | 18,41%
CONCESIÓN COSTERA-CARTAGENA-BARRANQUILLA S.A.S | Colombia | 51,41%
CONSORCIO TRANSMANTARO** | Peru | 30,85%
ECONOVA TECHNOLOGY & INNOVATION, S.L. | Spain | 100,00%
ECOPETROL AMERICA LLC** | United States | 100,00%
ECOPETROL CAPITAL AG | Switzerland | 100,00%
ECOPETROL COSTA AFUERA COLOMBIA S.A.S.** | Colombia | 100,00%
ECOPETROL DEL PERU S.A.** | Peru | 100,00%
ECOPETROL GLOBAL ENERGY S.L.U. | Spain | 100,00%
ECOPETROL OLEO & GAS DO BRASIL LTDA** | Brazil | 100,00%
ECOPETROL PERMIAN LLC ** | United States | 100,00%
ECOPETROL SINGAPORE PTE. LTD | Singapore | 100,00%
ECOPETROL TRADING ASIA PTE. LTD** | Singapore | 100,00%
ECOPETROL US TRADING LLC | United States | 100,00%
ECOPETROL USA INC ** | United States | 100,00%
ECP Hidrocarburos de México ** | Mexico | 100,00%
EQUION ENERGÍA LIMITED | United Kingdom | 51,00%
ESENTTIA MASTERBATCH LTDA** | Colombia | 100,00%
ESENTTIA RESINAS DE MÉXICO** S. DE R.L. DE C.V. | Mexico | 100,00%
ESENTTIA RESINAS DEL PERU SAC** | Peru | 100,00%
ESENTTIA S.A. * | Colombia | 100,00%
GASES DEL ORIENTE S.A. E.S.P.** | Colombia | 48,50%
HOCOL PETROLEUM LIMITED | Bermuda | 100,00%
HOCOL S.A.** | Cayman Islands | 100,00%
INTERCHILE S.A.** | Chile | 51,41%
INTERCONEXIÓN ELÉCTRICA COLOMBIA PANAMÁ S.A. | Panama | 25,71%
INTERCONEXIÓN ELÉCTRICA COLOMBIA PANAMÁ S.A.S E.S.P. | Colombia | 0,60%
INTERCONEXIÓN ELÉCTRICA ISA BOLIVIA S.A.** | Bolivia | 51,41%
INTERCONEXIÓN ELÉCTRICA ISA PERÚ S.A.** | Peru | 51,41%
INTERCONEXIÓN ELECTRICA S.A E.S.P. | Colombia | 51,41%
INTERCONEXIONES DEL NORTE S.A. | Chile | 51,41%
INTERCONEXIONES VIALES SPA** | Chile | 51,41%

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COMPANY | COUNTRY OF INCORPORATION | OWNERSHIP
INTERLIGAÇÃO ELÉTRICA AGUAPEÍ S.A. | Brazil | 6,60%
INTERLIGAÇÃO ELÉTRICA AIMORÉS S.A. | Brazil | 3,30%
INTERLIGAÇÃO ELÉTRICA BIGUAÇU S.A | Brazil | 6,60%
INTERLIGAÇÃO ELÉTRICA DE MINAS GERAIS S.A. | Brazil | 6,60%
INTERLIGAÇÃO ELÉTRICA DO MADEIRA S.A. | Brazil | 3,36%
INTERLIGAÇÃO ELÉTRICA EVRECY | Brazil | 6,60%
INTERLIGAÇÃO ELÉTRICA GARANHUNS S.A. | Brazil | 3,36%
INTERLIGAÇÃO ELÉTRICA ITAPURA S.A. | Brazil | 6,60%
INTERLIGAÇÃO ELÉTRICA ITAQUERÊ S.A. | Brazil | 6,60%
INTERLIGAÇÃO ELÉTRICA ITAUNAS S.A. | Brazil | 6,60%
INTERLIGAÇÃO ELÉTRICA IVAÍ S.A | Brazil | 3,30%
INTERLIGAÇÃO ELÉTRICA JAGUAR 6 S.A. | Brazil | 6,60%
INTERLIGAÇÃO ELÉTRICA JAGUAR 8 S.A. | Brazil | 6,60%
INTERLIGAÇÃO ELÉTRICA JAGUAR 9 S.A. | Brazil | 6,60%
INTERLIGAÇÃO ELÉTRICA NORTE E NORDESTE S.A. | Brazil | 6,60%
INTERLIGAÇÃO ELÉTRICA PARAGUAÇU S.A. | Brazil | 6,60%
INTERLIGAÇÃO ELÉTRICA PINHEIROS S.A. | Brazil | 6,60%
INTERLIGAÇÃO ELÉTRICA RIACHO GRANDE | Brazil | 6,60%
INTERLIGAÇÃO ELÉTRICA SERRA DO JAPI S.A. | Brazil | 6,60%
INTERLIGAÇÃO ELÉTRICA SUL S.A. | Brazil | 6,60%
INTERLIGAÇÃO ELÉTRICA TIBAGI S.A. | Brazil | 6,60%
INTERNEXA PERÚ S.A.** | Peru | 51,26%
INTERNEXA S.A.** | Colombia | 51,21%
INTERVIAL CHILE S.A.** | Chile | 51,41%
INTERVIAL COLOMBIA S.A.S.** | Colombia | 51,41%
INVERSIONES DE GASES DE COLOMBIA S.A. - Invercolsa S.A. | Colombia | 51,88%
ISA CAPITAL DO BRASIL S.A.** | Brazil | 51,41%
ISA INTERCOLOMBIA S.A. E.S.P** | Colombia | 51,41%
ISA INVERSIONES CHILE SPA.** | Chile | 51,41%
ISA INVERSIONES CHILE VIAS SPA. | Chile | 51,41%
ISA INVERSIONES COSTERA CHILE SPA** | Chile | 51,41%
ISA INVERSIONES TOLTEN LTDA.** | Chile | 51,41%
ISA INVESTIMENTOS E PARTICIPAÇÕES DO BRASIL LTDA** | Brazil | 51,41%
KALIXPAN SERVICIOS TÉCNICOS S. de r.l. de c.v ** | Mexico | 100,00%
LINEAR SYSTEMS RE LTD.** | Bermuda | 51,41%
METROGAS DE COLOMBIA S.A. E.S.P.** | Colombia | 33,49%
OCENSA DUCTOS S.A.S.** | Colombia | 72,65%
OLEODUCTO CENTRAL S.A. - OCENSA** | Colombia | 72,65%
OLEODUCTO DE COLOMBIA S.A. - ODC ** | Colombia | 78,19%
OLEODUCTO DE LOS LLANOS ORIENTALES S.A.** | Panama | 65,00%
PROMOTORA DE GASES DEL SUR S.A. E.S.P.** | Colombia | 31,44%
PROYECTOS DE INFRAESTRUCTURA DEL PERÚ S.A.C** | Peru | 51,41%
RED DE ENERGÍA DEL PERÚ** | Peru | 30,85%
REFINERIA DE CARTAGENA S.A.S * | Colombia | 100,00%
RUTA DE LA ARAUCANÍA SOCIEDAD CONCESIONARIA S.A.** | Chile | 51,41%
RUTA DE LOS RÍOS SOCIEDAD CONCESIONARIA S.A.** | Chile | 38,56%
RUTA DEL BOSQUE SOCIEDAD CONCESIONARIA S.A.** | Chile | 51,41%
RUTA DEL ESTE SOCIEDAD CONCESIONARIA S.A. | Panama | 51,41%
RUTA DEL LOA SOCIEDAD CONCESIONARIA S.A.** | Chile | 51,41%

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COMPANY | COUNTRY OF INCORPORATION | OWNERSHIP
RUTA DEL MAIPO SOCIEDAD CONCESIONARIA S.A.** | Chile | 51,41%
RUTA DEL MAULE SOCIEDAD CONCESIONARIA S.A.** | Chile | 51,41%
RUTA ORBITAL SUR SOCIEDAD CONCESIONARIA S.A. | Chile | 51,41%
SANTIAGO OIL COMPANY** | Cayman Islands | 51,00%
SISTEMAS INTELIGENTES DE RED S.A.S** | Colombia | 51,18%
TRANSELCA S.A. E. S. P. | Colombia | 51,41%
TRANSMISSORA ALIANÇA DE ENERGIA ELÉTRICA S.A. | Brazil | 7,65%
XM COMPAÑÍA DE EXPERTOS EN MERCADOS S.A. E.S.P. | Colombia | 51,27%

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*Direct and/or indirect participation.

**Solely indirect participation through subsidiaries or affiliates.