Acknowledgements

Coluún was certified with the SSINDEX Suppliers Stamp, for the positive evaluation they have of the company's sustainable performance

2024 - Colbún is recognized for its outstanding management in Occupational Safety and Health (OHS), obtaining: - Excellence in Risk Prevention Award: More than two years without accidents in multiple facilities. - National Safety Council Award: One year without lost time accidents. - Special Award: For the preventive effort in the “Horizon Project”.

2024 - Colbún is recognized in the Environmental Sustainability and Influencers Campaign categories, for its carbon footprint neutralization campaign carried out for the Juegos Panamericanos and Parapanamericanos in Santiago.

2024 – Colbún obtains 1st place in the 2024 Most Innovative Companies Ranking in the Energy category, prepared annually by the ESE Business School of the Universidad de los Andes in association with MIC Business Consulting.

2024 - Central Fenix receives “Peru Carbon Footprint” recognition from the Peruvian Ministry of the Environment, for the third consecutive year.

2024 - José Ignacio Escobar (CEO) and Miguel Alarcón (CFO) were recognized as outstanding leaders in the Latin American energy sector. This award, presented in New York, recognizes the effort and leadership of executives who drive Colbún's growth and sustainability.

2024 – José Ignacio Escobar obtained 7th place among the most innovative CEOs in Chile. This ranking measures the exposure and prominence of business leaders in the media and social networks.

2024 - Colbún is awarded by the Industrial Corporation for Regional Development for its commitment to “the development of local economies,” through social programs and entrepreneurship.

2024 - Colbún was once again included in the London Stock Exchange's FTSE4Good Index Series, which identifies companies that demonstrate robust environmental, social and governance practices, based on recognized global standards.

2024 - Colbún is recognized as one of the Top 8 Companies for Women (with fewer than 1000 employees) by Great Place To Work.

2024 - Colbún obtains first place in the Business Sustainability Ranking, in the Mining and Energy category

55-Premiación Empresarial EY y El Mercurio

Colbún receives recognition as an Outstanding Company for Environmental, Social and Governance (ESG)

2023 - Colbun is certified with the SSINDEX Stakeholders Stamp

2023 - Colbún is certified with the SSINDEX Suppliers Stamp, due to the positive evaluation they have of the company's sustainable performance.

2023 - Colbún receives recognition in the Dow Jones global sustainability index, placing us within the 10% of companies with the best score in the electrical industry among more than 250 considered in the S&P Global. And for the seventh year we were included in the DJSI Chile and DJSI MILA Pacific Alliance indices.

2023 - Colbun received a recognition for the fulfillment of goals and actions committed by the Nehuenco and Colbun facilities to the Clean Production Agreement (Acuerdo de Producción Limpia: APL) “Transition towards the circular economy”.

2023 - The Association of Engineering Consulting Companies of Chile (Asociación de Empresas Consultoras de Ingeniería de Chile: AIC) recognized our Horizonte Wind Farm project as the most important in the energy sector this year.

2023 - Colbún is recognized as “ the most sustainable company” and as the “most outstanding company in the environment” in the first Sustainability Ranking of IPSA companies.

2023 - Colbún is recognized as one of the Top 8 Companies for Women (with fewer than 1000 employees) by Great Place To Work.

2023 - Colbún achieves first place in the "Payer's Report 2023" ranking in the Energy Companies category, also leading the overall ranking due to the energy sector being the best payer at a general level.

2023 - Colbún achieves third place in the "Sustainability Tax Reports of IPSA Companies" ranking, which measures compliance with tax sustainability standards.

ISO 14011:2015 is an international standard, which establishes the guidelines for an environmental management system. This standard makes it possible to implement, maintain and continuously improve the internal and external requirements applicable to the company's electric power generation operation processes. To date, Colbún is certified to ISO 45001.2015, managed by TUV Rheinland.

ISO 45001:2018 is an international standard, which establishes the guidelines for an occupational health and safety management system. This standard makes it possible to implement, maintain and continuously improve the internal and external requirements applicable to the company's electric power generation operation processes. To date, Colbún is certified to ISO 45001.2015, managed by TUV Rheinland.

2022 - Certificate of Crime Prevention Model by ICR Clasificadora de Riesgo. For Colbun SA and Colbun Foundation.

42-INTERNET ADVERTISING COMPETITION 2023

2023 - Colbun.cl was recognized as the best energy website 2023 by the Internet Advertising Competition (IAC)

2022 - The Sustainability and Climate Change Agency acknowledged Colbún with the Blue Certificate, associated to Los Pinos Power Plant. Colbún was the first electricity generating company in Chile that received this recognition, for its sustainable water management.

2022 – The Carbon Disclosure Project, prestigious NGO international that divulges environmental management of companies, recognized Colbún’s report to CDP with the Administration category B in climate change and in water security.

2022 – Colbún was again included in the FTSE4Good Stock Market Index Series London, which identifies companies that demonstrate environmental, social and governance robust practices, based on recognized global standards.

2022- Colbún is certified with the SSINDEX Stakeholders Stamp

2022 – Colbún is certified with the SSINDEX Suppliers Stamp

2022 - Colbún ranks first in the Investor Relations category according to the Alas20 ranking

2022 - Colbún receives Carlos Vial Espantoso award for being one of the 10 organizations recognized for promoting trusting labor relations that seek the integral growth of their workers

2022 - The Lake Chapo Tourism Board obtains recognition from Geneneradoras Chile for the Good Practices contest

2022 - The Colbun Hydroelectric Plant Offices obtained Sustainable Building Certification recognition in the "outstanding" Certified Building category

2022 - Great Place To Work awarded Colbún as one of the eight best companies for women (Category: less than 1000 people)

2022 - Colbún ranked for the sixth consecutive year in the MILA Pacific Alliance Sustainability Index (DJSI MILA)

2021 – GPTW ranked Colbún among the top 10 “Best Place to Work” companies of up to 1,000 workers.

2021 – Colbún is certified with the SSIndex Contractors’ Stamp

2021 – Colbún is certified with the SSIndex Stakeholders’ Stamp

2018 – Colbún leads the Informe Reporta ranking that measures the reporting quality of the IPSA companies.

2021 – The IDB’s corporate sustainability index ranked Colbún among the top 100 publicly traded companies in Latin America and the Caribbean.

2021 – Colbún ranks second in the Informe Reporta ranking, which measures the companies’ reporting quality.

2021 – Great Place to Work certifies Colbún for its focus on investment and on promoting a good work environment.

Colbún is included in the Sustainability Yearbook, which recognizes the top 15% companies with the highest Dow Jones Sustainability Index scores.

2020 – Colbún’s Community Beekeeping Program is recognized at the “Good Practices Contest” organized by the Chilean Association of Power Generators

2020 – Colbún and Ecofibra are recognized by their Environmental Innovation by Britcham

2020 – The ChileFootprint Program of the Ministry of the Environment awarded a distinction to Colbún for its Climate Change Management.

2020 – Colbún is included for the fourth consecutive year in DJSI Mila Pacific Alliance

2020 – Colbún ranks second in the Corporate Governance category according to the Alas20 ranking.

2020 – For the third consecutive year, Colbún ranks first in the Informe Reporta ranking.

2020 – The new Angostura offices were granted the Green Building Certification, CES.

2020 – Colbún was included in the FTSE4Good Index Series, which measures the companies’ performance in social, environmental and governance practices.

2020 – Colbún and its subsidiaries were certified under ISO 14.001 and OHSAS 18.001

2019 – Colbún renewed its ProPyme Stamp.

2019 – The IDB’s corporate sustainability index ranked Colbún among the top 100 publicly traded companies in Latin America and the Caribbean.

2019 – Colbún was included in the FTSE4Good Index Series, which measures the companies’ performance in social, environmental and governance practices.

2019 – Colbún receives triple recognition for the management of its emissions

2019 – Fenix receives the Blue Certificate from the Peruvian National Water Authority (ANA)

2019 – The Machicura Resort was recognized with the best sustainable practice award.

2019 – For the second consecutive year, Colbún’s Annual Integrated Report ranks first in the Informe Reporta ranking that recognizes the companies’ reporting quality.

2019 – Colbún was included on DJSI Chile and DJSI Indices of the Pacific Alliance

2018 – Colbún is recognized for having women in executive positions by the IMAD Company Ranking; this initiative is led by Mujeres Empresarias and the Catholic University’s Directorate for Social Studies.

2018 – Colbún is the first Company to receive maximum distinction by the ChileFootprint Program.

2018 – Nehuenco Complex’s Reverse Osmosis Plant receives the Innovation Award from the Chilean Association of Power Generators.

2018 – Colbún is recognized in the Best Place to Innovate Ranking in the InnovAcción Perception category.

2018 – Colbún was included on DJSI Chile and DJSI Indices of the Pacific Alliance.

2018 – Pro Aconcagua distinguishes Colbún for its contribution to the zone.

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Acknowledgements

We are driven by the continuous improvement of our processes, and the way to distinguish ourselves is not to pretend problems don’t exist, but instead facing them with strength and decision.

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Acknowledgements

We are driven by the continuous improvement of our processes, and the way to distinguish ourselves is not to pretend problems don’t exist, but instead facing them with strength and decision.

RECOGNITIONS AND CERTIFICATIONS