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Exhibit 1 - Consolidated subsidiaries, associates, and joint ventures - Subsidiaries & Joint ventures Interconexion Electrica S.A. ESP (Details) - COP ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Exhibit 1 - Consolidated subsidiaries, associates, and joint ventures |  |  |  |
Equity | $ 105,913,439 | $ 100,252,480 | $ 113,903,089 | $ 90,583,772
Profit (loss) | 18,498,875 | 25,383,071 | $ 35,199,480 |
Assets | 298,242,156 | 280,141,090 |  |
Liabilities | $ 192,328,717 | $ 179,888,610 |  |
Interligao Eltrica do Madeira |  |  |  |
Exhibit 1 - Consolidated subsidiaries, associates, and joint ventures |  |  |  |
Ownership interest, joint venture | 51.00% | 51.00% |  |
Equity | $ 3,119,012 | $ 3,160,818 |  |
Profit (loss) | 361,207 | 356,863 |  |
Assets | 5,379,092 | 5,739,716 |  |
Liabilities | $ 2,260,080 | $ 2,578,898 |  |
Transmissora Aliana de Energia Eltrica |  |  |  |
Exhibit 1 - Consolidated subsidiaries, associates, and joint ventures |  |  |  |
Ownership interest, joint venture | 14.88% | 14.88% |  |
Equity | $ 4,942,790 | $ 5,273,100 |  |
Profit (loss) | 1,340,845 | 1,121,332 |  |
Assets | 13,231,132 | 13,877,165 |  |
Liabilities | $ 8,288,342 | $ 8,604,065 |  |
Interconexin Elctrica S.A. ESP | Interligao Eltrica do Madeira |  |  |  |
Exhibit 1 - Consolidated subsidiaries, associates, and joint ventures |  |  |  |
Functional currency | Brazilian real |  |  |
Ownership interest, joint venture | 51.00% |  |  |
Activity, joint venture | Electric power |  |  |
Country/Domicile, joint venture | Brazil |  |  |
Geographic area of operations, joint venture | Brazil |  |  |
Equity | $ 3,119,012 |  |  |
Profit (loss) | 361,207 |  |  |
Assets | 5,379,092 |  |  |
Liabilities | $ 2,260,080 |  |  |
Interconexin Elctrica S.A. ESP | Interligao Eltrica Garanhuns |  |  |  |
Exhibit 1 - Consolidated subsidiaries, associates, and joint ventures |  |  |  |
Functional currency | Brazilian real |  |  |
Ownership interest, joint venture | 51.00% |  |  |
Activity, joint venture | Electric power |  |  |
Country/Domicile, joint venture | Brazil |  |  |
Geographic area of operations, joint venture | Brazil |  |  |
Equity | $ 815,648 |  |  |
Profit (loss) | 100,954 |  |  |
Assets | 1,123,561 |  |  |
Liabilities | $ 307,913 |  |  |
Interconexin Elctrica S.A. ESP | Interligao Eltrica Paraguau |  |  |  |
Exhibit 1 - Consolidated subsidiaries, associates, and joint ventures |  |  |  |
Functional currency | Brazilian real |  |  |
Ownership interest, joint venture | 50.00% |  |  |
Activity, joint venture | Electric power |  |  |
Country/Domicile, joint venture | Brazil |  |  |
Geographic area of operations, joint venture | Brazil |  |  |
Equity | $ 834,943 |  |  |
Profit (loss) | 145,307 |  |  |
Assets | 1,269,518 |  |  |
Liabilities | $ 434,575 |  |  |
Interconexin Elctrica S.A. ESP | Interligacao Eletrica Aimores |  |  |  |
Exhibit 1 - Consolidated subsidiaries, associates, and joint ventures |  |  |  |
Functional currency | Brazilian real |  |  |
Ownership interest, joint venture | 50.00% |  |  |
Activity, joint venture | Electric power |  |  |
Country/Domicile, joint venture | Brazil |  |  |
Geographic area of operations, joint venture | Brazil |  |  |
Equity | $ 507,721 |  |  |
Profit (loss) | 92,379 |  |  |
Assets | 798,183 |  |  |
Liabilities | $ 290,462 |  |  |
Interconexin Elctrica S.A. ESP | Interligacao Eletrica Ivai |  |  |  |
Exhibit 1 - Consolidated subsidiaries, associates, and joint ventures |  |  |  |
Functional currency | Brazilian real |  |  |
Ownership interest, joint venture | 50.00% |  |  |
Activity, joint venture | Electric power |  |  |
Country/Domicile, joint venture | Brazil |  |  |
Geographic area of operations, joint venture | Brazil |  |  |
Equity | $ 845,669 |  |  |
Profit (loss) | 174,233 |  |  |
Assets | 3,389,336 |  |  |
Liabilities | $ 2,543,667 |  |  |
Interconexin Elctrica S.A. ESP | Transmissora Aliana de Energia Eltrica |  |  |  |
Exhibit 1 - Consolidated subsidiaries, associates, and joint ventures |  |  |  |
Functional currency | Brazilian real |  |  |
Ownership interest, joint venture | 14.88% |  |  |
Activity, joint venture | Electric power |  |  |
Country/Domicile, joint venture | Brazil |  |  |
Geographic area of operations, joint venture | Brazil |  |  |
Equity | $ 4,942,790 |  |  |
Profit (loss) | 1,283,190 |  |  |
Assets | 13,231,132 |  |  |
Liabilities | $ 8,288,342 |  |  |
Interconexin Elctrica S.A. ESP | Interconexion Electrica Colombia Panama-Panama |  |  |  |
Exhibit 1 - Consolidated subsidiaries, associates, and joint ventures |  |  |  |
Functional currency | US Dollar |  |  |
Ownership interest, joint venture | 50.00% |  |  |
Activity, joint venture | Electric power |  |  |
Country/Domicile, joint venture | Panama |  |  |
Geographic area of operations, joint venture | Panama |  |  |
Equity | $ 7,090 |  |  |
Profit (loss) | (18,996) |  |  |
Assets | 9,899 |  |  |
Liabilities | $ 2,809 |  |  |
Interconexin Elctrica S.A. ESP | Interconexion Electrica Colombia Panama Colombia |  |  |  |
Exhibit 1 - Consolidated subsidiaries, associates, and joint ventures |  |  |  |
Functional currency | Colombia peso |  |  |
Ownership interest, joint venture | 1.17% |  |  |
Activity, joint venture | Electric power |  |  |
Country/Domicile, joint venture | Colombia |  |  |
Geographic area of operations, joint venture | Colombia |  |  |
Equity | $ 264 |  |  |
Profit (loss) | (1) |  |  |
Assets | 266 |  |  |
Liabilities | $ 2 |  |  |
Interconexin Elctrica S.A. ESP | Transnexa |  |  |  |
Exhibit 1 - Consolidated subsidiaries, associates, and joint ventures |  |  |  |
Functional currency | US Dollar |  |  |
Ownership interest, joint venture | 49.85% |  |  |
Activity, joint venture | Transport and telecommunications |  |  |
Country/Domicile, joint venture | Ecuador |  |  |
Geographic area of operations, joint venture | Ecuador |  |  |
Interconexin Elctrica S.A. ESP | Derivex |  |  |  |
Exhibit 1 - Consolidated subsidiaries, associates, and joint ventures |  |  |  |
Functional currency | Colombia peso |  |  |
Ownership interest, joint venture | 39.88% |  |  |
Activity, joint venture | Manage the trading system for financial instruments derived from electricity |  |  |
Country/Domicile, joint venture | Colombia |  |  |
Geographic area of operations, joint venture | Colombia |  |  |
Equity | $ 2,869 |  |  |
Profit (loss) | (750) |  |  |
Assets | 3,724 |  |  |
Liabilities | $ 855 |  |  |
Interconexin Elctrica S.A. ESP | Parques de Rio |  |  |  |
Exhibit 1 - Consolidated subsidiaries, associates, and joint ventures |  |  |  |
Functional currency | Colombia peso |  |  |
Ownership interest, joint venture | 33.00% |  |  |
Activity, joint venture | Roads |  |  |
Country/Domicile, joint venture | Colombia |  |  |
Geographic area of operations, joint venture | Colombia |  |  |
Equity | $ 30 |  |  |
Profit (loss) | (38) |  |  |
Assets | $ 30 |  |  |
Interconexin Elctrica S.A. ESP | Conexion Kimal Lo Aguirre S.A. |  |  |  |
Exhibit 1 - Consolidated subsidiaries, associates, and joint ventures |  |  |  |
Functional currency | Chilena peso |  |  |
Ownership interest, joint venture | 33.33% |  |  |
Activity, joint venture | Electric power |  |  |
Country/Domicile, joint venture | Chile |  |  |
Geographic area of operations, joint venture | Chile |  |  |
Equity | $ 490,016 |  |  |
Profit (loss) | (1,789) |  |  |
Assets | 1,529,297 |  |  |
Liabilities | $ 1,039,281 |  |  |
Interconexin Elctrica S.A. ESP | Consorcio Elctrico Yapay S.A. |  |  |  |
Exhibit 1 - Consolidated subsidiaries, associates, and joint ventures |  |  |  |
Functional currency | US Dollar |  |  |
Ownership interest, joint venture | 50.00% |  |  |
Activity, joint venture | Electric power |  |  |
Country/Domicile, joint venture | Perú |  |  |
Geographic area of operations, joint venture | Perú |  |  |
Equity | $ 47,009 |  |  |
Profit (loss) | (5,651) |  |  |
Assets | 314,839 |  |  |
Liabilities | $ 267,830 |  |  |
Interconexin Elctrica S.A. ESP | PA Energa para la paz |  |  |  |
Exhibit 1 - Consolidated subsidiaries, associates, and joint ventures |  |  |  |
Functional currency | Colombia peso |  |  |
Ownership interest, joint venture | 54.73% |  |  |
Activity, joint venture | Special Purpose Entity |  |  |
Country/Domicile, joint venture | Colombia |  |  |
Geographic area of operations, joint venture | Colombia |  |  |
Equity | $ 15,668 |  |  |
Profit (loss) | (37) |  |  |
Assets | 19,057 |  |  |
Liabilities | $ 3,389 |  |  |
Interconexin Elctrica S.A. ESP | ATP Tower Holdings |  |  |  |
Exhibit 1 - Consolidated subsidiaries, associates, and joint ventures |  |  |  |
Functional currency | US Dollar |  |  |
Ownership interest, associate | 24.70% |  |  |
Activity, associate | Transport and telecommunications |  |  |
Country/Domicile, associate | United States |  |  |
Geographic area of operations, associate | United States |  |  |
Equity | $ 1,366,302 |  |  |
Profit (loss) | (173,438) |  |  |
Assets | 4,376,236 |  |  |
Liabilities | $ 3,009,934 |  |  |

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