IESO Executive and Leadership Team

July, 2026

Leadership Overview

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

Dedicated to powering Ontario, IESO ensures reliable electricity delivery through strategic leadership and operational excellence, impacting the province's energy landscape.

Leadership Roles at IESO

  • President & Chief Executive Officer - Lesley Gallinger
  • Corporate Services Chief Financial Officer & Vice President - Ernest Chui
  • Chief Operating Officer - Ken Kozlik
  • Chief Information Officer I, Ts Governance, Office - Achint Behar
  • Executive Vice President & Chief Information Officer - Alex Foord
  • 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 setting the company's direction, ensuring alignment with provincial energy goals, and fostering innovation within the electricity sector. Gallinger oversees the integration of new technologies and policies to maintain a stable and efficient power grid for Ontario. The President & Chief Executive Officer drives the company's mission to provide reliable electricity services, managing key stakeholder relationships and representing IESO's interests across the energy industry. By focusing on long-term sustainability and system resilience, Lesley Gallinger ensures the organization effectively meets the evolving energy demands of the region. This executive's purview encompasses all major departments, guiding them toward achieving critical performance metrics and upholding the company's commitment to public service.

    Ernest Chui - Corporate Services Chief Financial Officer & Vice President

    Ernest Chui, the Corporate Services Chief Financial Officer & Vice President at IESO, directs all financial operations and corporate services essential for the organization's stability and growth. This executive manages budgeting, financial planning, accounting, and treasury functions, ensuring fiscal responsibility and strategic resource allocation. Chui oversees the financial health of IESO, providing critical insights to support executive decision-making and long-term strategic planning. The Corporate Services Chief Financial Officer & Vice President also leads corporate services, encompassing areas that support the broader operational framework of the company. By implementing sound financial controls and driving operational efficiencies, Ernest Chui safeguards the company's assets and enhances its capacity to serve Ontario's energy needs. This role is pivotal in maintaining investor confidence and ensuring the sustainable delivery of electricity services.

    Ken Kozlik - Chief Operating Officer

    Ken Kozlik, the Chief Operating Officer at IESO, manages the day-to-day operational activities critical to delivering reliable power across Ontario. This executive oversees the complex systems and processes that ensure the continuous flow of electricity, focusing on efficiency and system integrity. Kozlik directs the teams responsible for grid management, energy dispatch, and operational planning, ensuring seamless integration of diverse energy sources. The Chief Operating Officer plays a vital part in maintaining the stability of the provincial power supply, implementing robust protocols for system maintenance and emergency response. By optimizing resource allocation and operational workflows, Ken Kozlik enhances the overall performance and reliability of IESO's services. This leadership position involves close collaboration with other C-suite executives to align operational strategies with the company's broader objectives for energy security and service delivery.

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

    Achint Behar, the Chief Information Officer I, Ts Governance, Office at IESO, leads the strategic direction and oversight of information technology and governance across the organization. This executive is responsible for ensuring that IT systems effectively support IESO's mission of providing reliable electricity services to Ontario. Behar directs the implementation of robust IT infrastructure, cybersecurity measures, and data governance policies to protect critical energy systems. The Chief Information Officer I, Ts Governance, Office ensures that technology initiatives align with regulatory requirements and industry best practices, fostering a secure and efficient digital environment. By driving technological innovation and maintaining strong governance frameworks, Achint Behar enhances operational resilience and supports the company's evolving energy management strategies. This leadership position is crucial for modernizing IESO's technological capabilities and ensuring data integrity.

    Alex Foord - Executive Vice President & Chief Information Officer

    Alex Foord, the Executive Vice President & Chief Information Officer at IESO, spearheads the technological infrastructure and digital transformation initiatives that underpin the reliable delivery of electricity across Ontario. This executive directs the development and maintenance of advanced IT systems, ensuring operational continuity and data security for critical energy operations. Foord oversees the integration of innovative technologies to enhance grid management, optimize energy distribution, and support the province's clean energy goals. The Executive Vice President & Chief Information Officer collaborates closely with other senior leaders to align technology strategies with IESO's overarching mission and regulatory obligations. By driving digital advancements and ensuring robust IT governance, Alex Foord strengthens the organization's capacity to manage complex energy demands and maintain system resilience. This role is fundamental to IESO's commitment to a secure and efficient energy future for Ontario.
    Alex Foord

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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, Chief Information Officer I, Ts Governance, Office, Executive Vice President & Chief Information Officer.