IESO Executive and Leadership Team

Lesley Gallinger, the President & Chief Executive Officer at IESO, directs the overarching strategic vision for the provincial power grid. Gallinger manages high-level stakeholder relationships and ensures the organization meets rigorous reliability standards across Ontario. By aligning corporate objectives with provincial energy policies, the President & Chief Executive Officer fosters a culture of operational excellence and grid resilience. Lesley Gallinger oversees the integration of renewable energy sources into the existing infrastructure, balancing supply and demand to maintain system stability. This leadership role requires constant coordination with regulatory bodies and industry partners to navigate complex energy market transitions. Through proactive planning and resource allocation, the President & Chief Executive Officer secures the future of the regional energy landscape. Gallinger drives innovation in grid management, ensuring that the organization remains at the forefront of the energy sector while delivering consistent value to the public.

Jason Fitzsimmons, the President & Chief Executive Officer at IESO, executes the operational mandate for grid security and market administration. Fitzsimmons focuses on the technical aspects of power distribution, ensuring that the electrical system remains robust against fluctuating demand patterns. As the President & Chief Executive Officer, Fitzsimmons leads initiatives to modernize grid infrastructure, incorporating advanced monitoring technologies to enhance system visibility. Jason Fitzsimmons manages the complex logistics of energy procurement and wholesale market operations, ensuring fair and transparent access for all participants. This role involves deep collaboration with engineering teams to mitigate risks associated with extreme weather events and aging equipment. By prioritizing system reliability and operational efficiency, the President & Chief Executive Officer maintains the integrity of the provincial power supply. Fitzsimmons drives continuous improvement in grid performance, ensuring that the organization effectively supports the evolving energy needs of the entire region.

Ernest Chui, the Corporate Services Chief Financial Officer & Vice President at IESO, manages the financial health and administrative infrastructure of the organization. Chui oversees capital planning, budgeting, and financial reporting to ensure the long-term sustainability of energy operations. As the Corporate Services Chief Financial Officer & Vice President, Chui directs the procurement processes and manages corporate risk to protect the organization from market volatility. Ernest Chui collaborates with executive leadership to allocate resources effectively, supporting critical investments in grid modernization and technology upgrades. This role involves maintaining transparent financial practices and ensuring compliance with regulatory requirements. By optimizing the cost structure and managing corporate assets, the Corporate Services Chief Financial Officer & Vice President provides the necessary foundation for operational success. Chui drives financial strategy, ensuring that the organization remains fiscally responsible while fulfilling the core mission of providing reliable electricity services to the province.

Ken Kozlik, the Chief Operating Officer at IESO, manages the daily execution of grid operations and system maintenance protocols. Kozlik oversees the control room functions that balance electricity supply and demand in real-time across Ontario. As the Chief Operating Officer, Kozlik directs the maintenance of critical transmission assets and ensures that all operational procedures comply with safety and reliability standards. Ken Kozlik coordinates with regional utility providers to optimize power flow and prevent system outages during peak usage periods. This leadership position requires constant vigilance and rapid decision-making to address technical challenges within the energy network. By streamlining operational workflows and implementing predictive maintenance strategies, the Chief Operating Officer enhances the overall efficiency of the provincial grid. Kozlik drives the implementation of new operational technologies, ensuring that the organization maintains a high level of service reliability for all electricity consumers throughout the province.

Achint Behar, the Chief Information Officer I, Ts Governance, Office at IESO, directs the governance frameworks and administrative oversight for information technology systems. Behar manages the policies and standards that ensure data integrity and secure digital operations across the organization. As the Chief Information Officer I, Ts Governance, Office, Behar oversees the alignment of IT initiatives with corporate governance requirements and regulatory mandates. Achint Behar coordinates with internal departments to implement robust security protocols, protecting critical grid data from emerging cyber threats. This leadership role involves managing the administrative aspects of technology deployment, ensuring that all digital tools support the operational goals of the energy sector. By establishing clear governance structures, the Chief Information Officer I, Ts Governance, Office facilitates efficient decision-making and risk management. Behar drives the development of IT policies, ensuring that the organization maintains a secure and compliant digital environment for all energy market activities.

Alex Foord, the Executive Vice President & Chief Information Officer at IESO, leads the digital transformation and technological strategy for the organization. Foord oversees the development of advanced software platforms that manage complex energy market data and grid operations. As the Executive Vice President & Chief Information Officer, Foord directs the engineering of scalable IT infrastructure to support real-time power monitoring and analysis. Alex Foord collaborates with cross-functional teams to integrate artificial intelligence and data analytics into grid management processes, enhancing overall system performance. This role involves managing large-scale technology projects that improve the efficiency of energy trading and distribution. By prioritizing innovation and digital security, the Executive Vice President & Chief Information Officer ensures that the organization remains resilient in an increasingly connected energy landscape. Foord drives the technological roadmap, enabling the organization to leverage data-driven insights for more effective grid management and improved service delivery across the province.