Lesley Gallinger  MBA, CPA, CPA (Illinois), C.Dir. in

Lesley Gallinger MBA, CPA, CPA (Illinois), C.Dir.

Editor · DISC type CS
President and Chief Executive Officer at Independent Electricity System Operator (IESO)
📍 Canada

Lesley Gallinger is the President and CEO of the Independent Electricity System Operator (IESO), bringing extensive experience from leadership roles across the energy sector, including as the inaugural CEO of Elexicon Energy. She is a results-oriented executive with a background in finance and strategic planning, holding CPA and MBA designations, and is known for her inclusive management style.

She is passionate about creating an orderly transition to a decarbonized future and emphasizes the importance of diversity and inclusion in the energy sector, noting that conscious leadership is needed to address unconscious bias. Her public statements highlight a commitment to reconciliation and advancing Indigenous leadership in the electricity sector.

Interesting fact: Lesley was appointed to the Electrifying Canada Advisory Panel, a national initiative to accelerate the countrys transition to a sustainable energy future.

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Experience
26 Years
Current Role
President and Chief Executive Officer
Job Level
Leadership
Location
Canada
Personality Overview

How Lesley shows up

Skeptic
Fact-Driven
Self-Disciplined

They tend to be clear about their needs and limitations and are unlikely to promise too much. The only way to convince them is by showing them examples and ample proof. They do not like taking risks at all and go for proven options in the end.

Priorities

Topics Lesley cares about

Energy Decarbonization
As IESO's CEO, she is leading Ontario's power system transformation, aiming for a decarbonized grid by 2050 through an orderly and affordable transition.
Indigenous Partnerships
Publicly advocates for and supports the economic empowerment and leadership of Indigenous communities within Ontario's evolving energy sector.
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Career

Work history

5-2021
President and Chief Executive Officer
Independent Electricity System Operator (IESO)
9-2016
Chair Of The Board Of Trustees
Blue Pier™
6-2017 - 6-2025
Member of the Board of Directors
Nuclear Waste Management Organization
5-2019 - 5-2021
President and Chief Executive Officer
Elexicon Energy Inc.
8-2016 - 8-2019
Member Board Of Directors
MPAC
In the press

Media appearances

Lesley Gallinger, President & CEO, Independent Electricity System Operator (IESO). Featured in Ontario Energy Network
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Lesley Gallinger – President and Chief Executive Officer at Independent Electricity System Operator (IESO). Featured in The Org
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Education
1988 - 1991
MBA
Schulich School of Business - York University
2010 - 2010
Corporate Strategy
MIT Sloan School of Management
2008 - 2010
C.Dir
McMaster University
Social presence
in
Behavioral profile

DISC profile (public)

C

Calculativeness (C)

Calculativeness (C) reflects the degree to which a person is likely to be cautious, systematic and analytical. Those scoring high tend to emphasise quality and accuracy.

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