Executive Team

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.

Peter Gregg
President and Chief Executive Officer

JoAnne Butler, Vice-President, Market and Resource Development

JoAnne Butler
Vice-President
Market and Resource Development


Michael Lyle, Vice-President, Planning, Legal, Indigenous Relations and Regulatory Affairs

Michael Lyle
Vice-President
Planning, Legal, Indigenous Relations and Regulatory Affairs

Doug Thomas Vice-President, Information and Technology Services and CIO

Doug Thomas
Vice-President
Information and Technology Services and CIO

Kimberly Marshall, Vice-President, Corporate Services and CFO

Kimberly Marshall
Vice-President
Corporate Services and CFO

Leonard Kula

Leonard Kula
Vice President
Market and System Operations,
and Chief Operating Officer

Terry Young, Vice-President, Conservation and Corporate Relations

Terry Young
Vice-President
Conservation and Corporate Relations