• 
  Neither ISA nor its companies have had or currently have any project named “Ventus.” Likewise, the company has no approved investments nor participation in projects exceeding USD 2 billion, as has been publicly suggested.
• As part of its ordinary market analysis processes and evaluation of potential suppliers and partners, ISA became aware of Ventus (Ventus Colombia SAS), an EPC company specialized in renewable energy projects.In 2025, Juan Emilio Posada, current member of ISA’s Board of Directors and former President of the company, disclosed the existence of an indirect contractual relationship with Ventus (which ended in October 2025) and stated that he never participated in conversations regarding potential business between Ventus and ISA. Additionally, as required in such situations, the company conducted a legal analysis and determined that, within the applicable legal framework, there was an incompatibility for the company to enter into contracts with this firm. Consequently, neither ISA nor its companies have had nor currently have any contractual relationship with Ventus.
• In accordance with ISA’s internal regulations and corporate bylaws, decisions related to the approval of investments of the magnitude publicly mentioned are not the responsibility of the company’s President, but rather of its Board of Directors.
• ISA does not participate in, nor has it participated in, political activities; therefore, it does not support campaigns or political parties. The company acts with strict institutional neutrality and, by law and under its Code of Ethics, is prohibited from using corporate resources for any electoral purpose. Its role is to operate strategic infrastructure with technical rigor, excellence, and adherence to institutional frameworks
• Gabriel Melguizo Posada, Acting President, has nearly 30 years of experience within the company and has held significant leadership positions in several of the countries where ISA operates. He is recognized for his technical expertise, as well as his ethical and moral princi
• ISA has an ethics and integrity program that complies with best market practices. Therefore, the company invites any citizen who may have a complaint or is aware of any irregular conduct involving ISA to report it through the ISA Ethics Hotline, attaching evidence that allows for a thorough investigation.

Toll-free and anonymous Ethics Hotline: +57 01 8000 94 13 41

lineaetica@isa-as-prod-sitioweb002.azurewebsites.netm.co

App Store: Grupo ISA Ethics Hotline

La entrada ISA Clarifies Information Regarding Red de Veedurías se publicó primero en ISA.

ISA closed 2025 with results that reflect its operational and financial strength, disciplined execution of its strategy, and leadership in the energy transition across Latin America.

This performance was reflected in the company’s share price, which stood out in 2025 as one of the most actively traded stocks within the MSCI Colcap index, increasing by 48% during the year. The share reached a peak price of COP 26,300, levels not seen since 2021. Including dividends paid during the year totaling COP 1,265 per share, total shareholder return reached 55%.

During 2025, ISA executed investments of COP 6.3 trillion, representing a 31% increase compared to 2024, consolidating its leadership in the countries where it operates. Over the next five years, the company plans to invest COP 25.5 trillion. In parallel, through innovation, ISA generated revenues of USD 6.76 million and achieved efficiencies of USD 0.46 million.

From an operational standpoint, the company secured projects with investments close to USD 283 million and commissioned projects with a CAPEX of USD 664 million. In Colombia, the energization of the Cuestecitas–Copey–Fundación interconnection stood out as a key milestone, enabling renewable energy generated in La Guajira to be transmitted to the rest of the country and strengthening the National Transmission System. In Brazil, ISA delivered Riacho Grande, the country’s longest underground transmission line. In the Roads business, the financial close of the Ruta Panamericana Este project for USD 281 million was achieved, securing resources for its execution. In Telecommunications, the year closed with more than 1,000 new kilometers of fiber optic infrastructure deployed across Latin America.

On the financial front, in 2025 ISA recorded EBITDA of COP 8.7 trillion and net income of COP 2.4 trillion. These results were impacted by extraordinary events in both 2024 and 2025. In 2024, the periodic tariff review in Brazil, adjustments to major maintenance in Peru, and the Air-e provision in Colombia resulted in an additional COP 186 billion in net income. In 2025, net income was negatively impacted by COP 344.6 billion due to two factors: an adjustment to the update formula of the financial component of assets of Brazil’s Existing System Basic Network (RBSE), amounting to COP 140.4 billion, and an increase in the provision for Air-e receivables in Colombia totaling COP 204.2 billion. As a result, net income for 2025 decreased by 14% compared to the previous year; excluding these effects, it would have increased by 5%.

“The 2025 results confirm market and stakeholder confidence in our strategy and our ability to execute investments with focus, discipline, and a long-term vision, strengthening our leadership in the region’s energy transition,” said Gabriel Melguizo, Acting CEO of ISA.

At the same time, ISA continued advancing its sustainability agenda and contributions to local communities. In 2025, the company invested approximately COP 28 billion in high-impact social management initiatives and closed the year with an SROI of 4.15. Additionally, ISA defined its decarbonization pathway toward Net Zero and achieved 114% of its annual target.

Key highlights of 2025

• Launch of the ISA2040 Strategy.
• Entry into the energy solutions business as a lever for energy transition and portfolio diversification.
• Transformation of ISA Transelca as the vehicle to develop the energy solutions business in Colombia.
• Intercolombia assumed operation, administration, and maintenance of energy transmission assets in Colombia’s Caribbean region.
• Evolution of the brand architecture under ISA ENERGÍA and ISA VÍAS across Latin America.
• Creation of Hi, ISA’s digital services hub, to drive operational efficiency, regional scale, and technology adoption.
• ALAS20 Award recognition for investor relations.
• Ranked among the Top 10 Best Companies to Work For by Great Place to Work in Colombia.
• Inclusion in S&P’s Sustainability Yearbook.
• Score of 85/100 in the Dow Jones Sustainability Index, placing ISA among the top 15 companies in the sector and within the top 10% globally for sustainability performance.

La entrada More investment, greater value: ISA closed 2025 with 31% investment growth and a 48% increase in its share price se publicó primero en ISA.

According to the Global Sustainability Yearbook classification, the company has joined the exclusive top 10% of electric power utilities worldwide, recognizing organizations with the strongest sustainability performance.

According to the report, ISA achieved outstanding results across all three assessed dimensions—Environmental, Social, and Governance—improving its score in each category compared to the previous year. This achievement represents ISA’s ninth inclusion in the Yearbook.

In the Environmental dimension, ISA scored 87 out of 100, improving by 19 points driven by advances in climate strategy, biodiversity management, and water stewardship. In the Social dimension, the company achieved a score of 82 out of 100, an increase of 8 points, supported by strengthened labor practices, diversity and inclusion initiatives, workforce training on critical business topics, and programs expanding access to basic services. In Governance, ISA scored 84 out of 100, improving by 4 points, reflecting its commitment to ethical business practices, transparency, and the promotion of integrity among its stakeholders.

“Being included in the S&P Global Sustainability Yearbook 2026 confirms the strength of our strategic vision, which places sustainability at the core of our business. This recognition reinforces our purpose of anticipating challenges and actively contributing to the transformations required by the global environment,” said Jorge Carrillo, President of ISA.

A Strong Commitment

ISA continues to strengthen its leadership in sustainability through a solid and verifiable Net Zero roadmap focused on real emissions reductions, the adoption of low-carbon technologies, and responsible offsetting based on ecosystem restoration and protection. The company has established targets in energy efficiency, process electrification, and renewable energy integration, complemented by conservation, reforestation, and ecological connectivity initiatives that enhance territorial resilience.

This progress is also driven by a talent management approach that fosters strong work environments, promotes diversity and inclusion, and develops key capabilities to address business challenges. In addition, ISA accelerates the energy transition through the expansion and modernization of transmission infrastructure, supported by network digitalization and the development of electric mobility infrastructure. These efforts are aligned with strategic social programs that strengthen local capabilities, education, and community infrastructure, all underpinned by an organizational culture based on ethics and integrity.

La entrada ISA Among the World’s Most Sustainable Companies According to the Global Sustainability Yearbook se publicó primero en ISA.

Ecopetrol and ISA announced the creation of the “Alliance for the Energy Transition in the Territories,” an initiative designed to close energy gaps, improve quality of life in strategic areas for both companies, and promote energy as a driver of development.

The alliance seeks to promote projects that respond to real community needs, leveraging the technical and operational capacity of the Ecopetrol Group to optimize implementation timelines and resources.

This collaboration includes the creation of a fund by ISA to finance initiatives based on Non-Conventional Renewable Energy Sources (NCRES) and attract other stakeholders interested in contributing to sustainable territorial development. The fund will receive contributions from companies and organizations willing to support high social and environmental impact projects through a transparent and replicable management model.

The first project will be implemented at the Universidad Pedagógica y Tecnológica de Colombia (UPTC), where photovoltaic solar systems will be installed at the campuses in Tunja, Duitama, and Sogamoso. The investment, close to COP $2 billion, will benefit approximately 15,000 members of the university community.

Thanks to the installation of these systems, UPTC will reduce its energy costs, and the resulting savings will be allocated to food and housing scholarships for students enrolled in STEM programs, the strengthening of renewable energy research, and the modernization of the institution’s electrical infrastructure.

“This alliance with ISA will allow us to scale proven models, bring in more partners, and deliver solutions based on non-conventional renewable energy sources to more territories. It is a ‘vehicle’ that turns contributions into concrete, measurable, and replicable results, with a management standard focused on impact and long-term sustainability,” said Diego Castro, Manager of Energy Transition Strategy at Ecopetrol.

He added: “Beyond infrastructure, this alliance with ISA has a clear purpose: to make the energy transition an enabler of opportunities for territories by promoting education, innovation, and well-being. With this innovative approach, we are advancing efficient resource management while accelerating projects that generate real and lasting impact for communities.”

“The energy transition must become tangible opportunities for people. With the creation of this fund, ISA provides an agile, transparent, and replicable vehicle capable of mobilizing resources and accelerating high-impact initiatives. This first project with UPTC demonstrates that when we combine capabilities, the energy transition becomes development, education, and better opportunities for communities,” said Jorge Andrés Carrillo, President of ISA.

With this announcement, Ecopetrol and ISA consolidate a roadmap in which the energy transition goes beyond technology and is expressed through tangible projects with social, educational, and territorial impact, inviting more private-sector stakeholders to join in building a more sustainable country.

Press Kit

La entrada Ecopetrol and ISA seal alliance that turns energy transition into education, innovation, and opportunities se publicó primero en ISA.

Ecopetrol and ISA have successfully completed a strategic electrical infrastructure project that enhances the reliability, efficiency, and operational flexibility of the Barrancabermeja Refinery, one of Colombia’s most important industrial assets.

The project involved the construction of two single-circuit electrical distribution lines, each with a capacity of 60 megawatts (MW) at 34.5 kilovolts (kV). This capacity is equivalent to the monthly electricity consumption of approximately 200,000 Colombian households.

Thanks to this new infrastructure, Ecopetrol will be able to gradually release 6.5 GBTU of natural gas per day to the national market. This volume is comparable to 10% of Colombia’s demand for natural gas used in vehicles, contributing to the country’s energy security and optimizing the use of resources at the Barrancabermeja Refinery.

The electrical infrastructure includes a 1.2-kilometer overhead section and two underground sections measuring 160 meters and 850 meters, respectively, along with their corresponding technical connections.

The new connection enables the Barrancabermeja Refinery to increase its capacity to receive electricity from remote self-generation projects, particularly from solar and wind sources. It also provides the necessary backup and reliability to address contingency scenarios or changes in the operational configuration of industrial services.

The project will generate significant operational, economic, and environmental benefits. These include estimated annual savings of nearly US$6 million, resulting from fewer shutdowns caused by electrical failures, reduced gas consumption, and optimized energy costs for refinery operations.

Specifically, savings of approximately US$2.4 million per year are expected from the reduction of outages related to electrical failures, while an additional US$3.4 million annually will come from operational savings in gas consumption.

From an environmental perspective, the project will help reduce CO₂ emissions by approximately 205,000 tons per year, making a meaningful contribution to the Ecopetrol Group’s sustainability and energy transition commitments.

Through this initiative, Ecopetrol and ISA reaffirm their commitment to operational efficiency, environmental sustainability, and the strengthening of a robust and reliable energy infrastructure in support of company operations and the well-being of all Colombians.

Ecopetrol is Colombia’s largest company and one of the leading integrated energy companies in the Americas, with more than 18,000 employees. In Colombia, it accounts for over 60% of hydrocarbon production and manages most of the country’s hydrocarbon transportation, logistics, and refining systems. It also holds leading positions in petrochemicals and gas distribution. Through the acquisition of 51.4% of ISA’s shares, Ecopetrol participates in power transmission, real-time system operations (XM), and the Barranquilla–Cartagena Coastal Highway concession.

Internationally, Ecopetrol operates in strategic basins across the Americas, with exploration and production activities in the United States (Permian Basin and Gulf of Mexico) and Brazil. Through ISA and its subsidiaries, it also holds leading positions in power transmission in Brazil, Chile, Peru, and Bolivia, in road concessions in Chile, and in telecommunications.

La entrada Ecopetrol and ISA Successfully Complete Strategic Electrical Infrastructure Project at the Barrancabermeja Refinery se publicó primero en ISA.

La entrada ISA ENERGÍA in PERU commissions the highest-altitude electrical substation ever built in the company’s history se publicó primero en ISA.

ISA ENERGIA has commissioned Brazil’s first project using Flexible AC Transmission Systems (FACTS) technology. This solution enables the redistribution of energy flow from overloaded circuits to those with lower utilization, optimizing existing infrastructure and making the system more stable and efficient.

La entrada ISA Launches Groundbreaking Project in Brazil Featuring High Innovation for National Grid Stability se publicó primero en ISA.

• ISA’s stock is among the top performers in the MSCI COLCAP, with a price increase of nearly 50% so far in 2025.

La entrada ISA Makes Second Dividend Payment for 2025, the Highest in Its History se publicó primero en ISA.

La entrada HI, ISA’s Hub – A New Cross-Services Company for Latin America se publicó primero en ISA.