Skip Links
Corporate IESO > Leadership > Executive Team > Lesley Gallinger


The IESO President and CEO and Leadership Team are responsible for implementing the strategic direction and initiatives for the organization in keeping with its statutory objectives. They also provide advice and recommendations to the IESO Board of Directors.

Lesley Gallinger

Lesley Gallinger

Lesley Gallinger is President and Chief Executive Officer of Ontario’s Independent Electricity System Operator. Under her leadership, the IESO oversees the safe and reliable operation of Ontario's bulk electricity system, ensuring affordable electricity is available when and where people need it.

As part of its mandate to plan and prepare for the future, the IESO works with sector partners to identify energy needs, develop supply options, drive innovation, and harness data and information for decision-making. The IESO also delivers energy efficiency and demand management programs that contribute to the cost-effectiveness and reliability of Ontario’s power system.

Throughout her career, Ms. Gallinger has focused on driving strategic change within complex organizations to deliver shareholder and stakeholder value. Prior to joining the IESO, she served as President and Chief Executive Officer of Elexicon Energy, a large municipally-owned electricity distributor in Ontario, which she led through a sizeable merger integration. She has also held senior roles in the electricity sector that include Chief Strategy and Financial Officer at the Electrical Safety Authority as well as VP, Corporate and Regulatory Affairs and Chief Financial Officer at Oakville Hydro.

Ms. Gallinger sits on several boards, including the Ontario Energy Network where she serves as Vice Chair, and the Nuclear Waste Management Organization. Prior to joining the IESO she also served on the boards of the Ontario Energy Association and the Electricity Distributors Association. She holds a Master of Business Administration from the Schulich School of Business at York University, is a Chartered Professional Accountant and a Certified Public Accountant (Illinois). She has also completed the Chartered Director and Audit Committee Certified program at the DeGroote School of Business, McMaster University. Linkedin

Return to the Executive Team