IESO Executive and Leadership Team

July, 2026

Leadership Overview

IESO has 5 executives leading key functions including strategy, operations, information technology, and finance.

Driven by a commitment to reliable energy, IESO powers Ontario with essential electric services, focusing on operational excellence and technological advancement to meet the province's energy demands.

Leadership Roles at IESO

  • President & Chief Executive Officer - Lesley Gallinger
  • Corporate Services Chief Financial Officer & Vice President - Ernest Chui
  • Chief Operating Officer - Ken Kozlik
  • Executive Vice President & Chief Information Officer - Alex Foord
  • Chief Information Officer I, Ts Governance, Office - Achint Behar
  • Lesley Gallinger - President & Chief Executive Officer

    Lesley Gallinger, the President & Chief Executive Officer at IESO, directs the overall strategic vision and operational execution for the organization. This leadership role involves steering the company's mission to provide reliable power and electric services to Ontario. Gallinger oversees all major corporate initiatives, ensuring alignment with provincial energy goals and market demands. The President & Chief Executive Officer drives the company's engagement with stakeholders, including government bodies and industry partners, fostering collaboration and advancing the energy sector's objectives. By setting the executive agenda, Lesley Gallinger ensures that IESO maintains its critical role in the province's energy infrastructure and adapts to evolving technological landscapes and regulatory requirements. This executive leadership is fundamental to IESO's sustained performance and its contribution to Ontario's economic stability.

    Ernest Chui - Corporate Services Chief Financial Officer & Vice President

    Ernest Chui, the Corporate Services Chief Financial Officer & Vice President at IESO, directs the financial strategy and corporate services essential for the company's operations in Ontario. This executive oversees all financial planning, budgeting, accounting, and reporting functions, ensuring fiscal responsibility and sustainability. Chui manages the allocation of resources to support IESO's mission of providing reliable power and electric services. The Corporate Services Chief Financial Officer & Vice President also leads corporate services, encompassing areas that support the overall business infrastructure. By guiding financial operations, Ernest Chui ensures the company's financial health and its capacity to invest in necessary technological advancements and infrastructure upgrades.

    Ken Kozlik - Chief Operating Officer

    Ken Kozlik, the Chief Operating Officer at IESO, manages the day-to-day operational activities essential for delivering power and electric services across Ontario. This executive is responsible for the efficient functioning of all operational departments, ensuring the seamless delivery of energy to the city. Kozlik oversees the infrastructure management and service delivery processes, directly impacting the reliability and quality of power supplied. The Chief Operating Officer drives operational improvements and implements best practices to enhance efficiency and reduce costs. By focusing on operational excellence, Ken Kozlik ensures that IESO meets its service level agreements and maintains a robust energy supply chain. This leadership position is critical for maintaining the integrity of the power grid and responding effectively to demand fluctuations.

    Alex Foord - Executive Vice President & Chief Information Officer

    Alex Foord, the Executive Vice President & Chief Information Officer at IESO, architects the company's technology strategy and oversees all information systems critical to power delivery in Ontario. This executive champions digital transformation initiatives, ensuring that IESO leverages advanced technology to enhance operational efficiency and service reliability. Foord directs the management of IT infrastructure, cybersecurity protocols, and data management systems, safeguarding the integrity of the energy network. The Executive Vice President & Chief Information Officer collaborates with other leaders to integrate technological solutions that support IESO's mission. By driving innovation in information technology, Alex Foord ensures the company remains at the forefront of the energy sector's digital evolution, supporting robust data analytics and system resilience.
    Alex Foord

    Achint Behar - Chief Information Officer I, Ts Governance, Office

    Achint Behar, the Chief Information Officer I, Ts Governance, Office at IESO, focuses on establishing and maintaining robust IT governance frameworks for the organization's technology operations in Ontario. This executive ensures that all information technology systems and processes adhere to strict compliance standards and regulatory requirements. Behar oversees the development and implementation of policies related to IT governance, risk management, and information security. The Chief Information Officer I, Ts Governance, Office plays a crucial role in ensuring the integrity, availability, and confidentiality of IESO's data assets. By driving effective governance, Achint Behar supports the strategic objectives of the company and mitigates potential risks associated with technology deployment and management.

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    Frequently Asked Questions Regarding IESO Top Executives and Leadership Team

    Who leads IESO?
    IESO is led by Lesley Gallinger (President & Chief Executive Officer), along with executives such as Ernest Chui (Corporate Services Chief Financial Officer & Vice President) and Ken Kozlik (Chief Operating Officer).
    Who is part of IESO’s executive team?
    The executive team of IESO includes leaders such as Lesley Gallinger (President & Chief Executive Officer), Ernest Chui (Corporate Services Chief Financial Officer & Vice President), Ken Kozlik (Chief Operating Officer) and other senior executives.
    How many executives does IESO have?
    IESO has 5 executives leading key business areas.
    What roles are included in IESO’s leadership team?
    The leadership team of IESO includes roles such as President & Chief Executive Officer, Corporate Services Chief Financial Officer & Vice President, Chief Operating Officer, Executive Vice President & Chief Information Officer, Chief Information Officer I, Ts Governance, Office.