Ken Hartwick Appointed and Named Chair to IESO's Board
November 13, 2025
The IESO is pleased to announce that Ken Hartwick has been appointed to its Board of Directors by the Minister of Energy and Mines and has been named Chair by the IESO’s Board of Directors.
Ken brings a wealth of experience in energy, corporate leadership, and governance to the IESO’s Board of Directors at a time when the sector is working to manage rapid demand growth and infrastructure expansion, balance affordability with new investment, and coordinate efforts across Indigenous communities and increasingly diverse stakeholder groups.
Ken has more than 40 years of experience; most recently as the President and CEO of Ontario Power Generation (OPG). Under his tenure, OPG released its first-ever Climate Change Plan, advanced Ontario’s electrification efforts through the Ivy charging partnership and PowerON subsidiary, launched a Reconciliation Action Plan, and advanced the development of Canada’s first Small Modular Reactors.
Prior to joining OPG, Ken held several senior positions, including partner at Ernst & Young LLP, CFO of Hydro One, Interim President and CEO of Atlantic Power Corporation, CFO and CEO of Just Energy Corporation, and CFO and Treasurer at Wellspring Financial Corporation.
The IESO and its Board of Directors look forward to working with Ken to drive and guide the future of our sector.
For Ken’s full bio, visit the IESO’s website.