Interconexión Electrica S A E S P : Further to the publication made on March 25, 2022, we attach the Integrated Management Report containing the financial information duly approved by the General Shareholders’ Meeting.

CONNECTIONS THAT INSPIRE

Inspiring

all together

Integrated Report

2021

CONNECTIONS THAT INSPIRE

1

Message from ISA's CEO

2

Report profile

3

Transaction between the Ministry of Finance and Public Credit and Ecopetrol

4

Profile of ISA and its companies

Shareholding structure

In figures

Business model

• Electric Power
• Roads
• Telecommunications and ICT
  Relevant milestones Recognitions

Integrated management systems

Good governance and integrity

• Board of Directors
• Administration
• Ethics

5

STRATEGY

Action framework ISA2030 Strategy Progress in the strategy Comprehensive risk management

6

Materiality analysis

Strength and growth Excellence

Contribution to global environmental challenges

• Commitment to the protection of biodiversity
• Management of environmental impacts
• Climate change mitigation and adaptation

Commitment to socioeconomic development

Foresight and innovation

Transformational leadership and influencing capacity

Development and care of human talent

• Talent development
• Quality of life
• Occupational health and safety

7

Financial results

Accumulated consolidated results report

• Consolidated income statement
• Consolidated balance sheet
• Consolidated financial liabilities and bonds
• Credit risk ratings
• Invesments

Separate financial statements

• Separate income statement
• Separate balance sheet
• ISA's financial liabilities and bonds
• Share performance
• Dividends

Consolidated statements of financial position

• Notes to the consolidated financial statements
• Statutory auditor´s report
• Certification of consolidated financial statements and other relevant reports

Separate statements of financial position

• Notes to the separate financial statements
• Statutory auditor´s report
• Certification of separate financial statements
• Board of Director's report
• Special report on transactions with affiliates and subsidiaries

8

Annexes

GRI index

Supplementary information

Memorandum of independent review

Directory of ISA and its companies

Corporate governance report

Inspiring

all together

1 • Message from ISA's CEO

2021

Message from ISA's CEO• Report profile  •  The transaction  •  Profile of ISA and its companies  •  Strategy  •  Materiality analysis  •  Financial results  •  Annexes

Inspiring

all together

César Augusto

Ramírez Rojas

CEO in charge

Dear

shareholders:

Having a sense of purpose rooted in the culture has become the main driver for the survival and evolution of organizations. Even more so during a year still marked by the effects of the pandemic and by adaptation to an ever-changing world, which continues to pose new challenges.

At ISA, having a clear purpose meant achieving excellence in results, transcending towards an increasingly deeper understanding of our relationship with the environment and its effects, and aligning each of our actions with the strategic determination to generate value that remains over time and that translates into progress, development, the construction of social networks, and quality of life.

We look forward to this year with commitment, op- timism, and empathy. All our efforts are focused on repaying our shareholders, each and every one of our stakeholders, and all of society, who have been expecting our contribution. We were aware of what each step forward meant at this important historical moment, and of the trust placed in us.

Today, the results of ISA and its companies reflect an efficient management that has once again achieved outstanding results, tracing a solid path of business growth, ensuring their validity, and demonstrating an active management of the performance of our stock, within the framework of the best environmen- tal, social, and governance practices worldwide.

With sustainability at the core of each of our actions, this year our ambitious, accurate management allowed us to make tangible progress in the transition to a low-carbon economy by developing projects that seek a cleaner energy matrix in the region, as well as by implementing initiatives that generate a significant positive social and environmental impact.

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2021

Message from ISA's CEO• Report profile  •  The transaction  •  Profile of ISA and its companies  •  Strategy  •  Materiality analysis  •  Financial results  •  Annexes

In this area, we can highlight milestones such as the awarding of the bid to build and operate the Kimal-Lo Aguirre line of more than 1,400 km, one of the most important transmission projects not only in Chile, but also on the continent. Likewise, in Brazil, the development of the first large-scale battery energy storage project in the country, where we also built the first digital substation, stands out. All of these projects, leveraged by innovation, aim at our great purpose of contributing to the energy transformation through the decarbonization of the energy matrix, transporting clean, environmentally responsible energy. Today, we can proudly say that 100% of the operations of our Electric Power Transmission and Telecommunications companies are net-zero carbon (scope 1 and 2). We are doing the same in the Road business unit, where ISA INTERVIAL Chile became the first company of ISA and of this business in the country to be carbon neutral. Also, our company in Chile received the Seal of Excellence from the Ministry of the Environment for its management of emissions.

In Colombia, the Ministry of Mines and Energy selected XM to carry out the third Renewable Energy

Auction, where contracts were awarded for eleven new solar generation projects for a net effective capacity of 796.3 MW. XM was also able to export more than one million carbon credits from Colombian projects through its EcoRegistry and EcoTrade platforms.

Another important step for ISA and its companies and for this sector in general was the

signing of the agreement that establishes the regulatory scheme principles for advancing in the Colombia-Panama energy interconnection project, which represents the integration of the Andean Community with Central America. This project will guarantee energy security for the region through a diversified, safe, reliable, and environmentally responsible energy supply.

Today, we can say that 100% of the operations of our energy and telecommunications companies are net carbon zero (scope 1 and 2).

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