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Within Board of Directors


Board of Directors

The IESO Board of Directors oversees the management of the organization's business and affairs. All of the Board members must be independent and are prohibited from having a material interest in any market participant in Ontario's electricity sector. As part of its responsibilities, the Board approves the market rules, policies and guidelines that govern the IESO-administered markets.

Members of the Board are appointed by the Minister of Energy for a two-year term and may be reappointed for successive terms not exceeding five years.

Tim O’Neill is Chair of the IESO Board of Directors. He is the President of O’Neill Strategic Economics and a Visiting Professor at Duke University; he is a member of the Canadian Employment Insurance Financing Board and a Director of the United Church of Canada Foundation. After retiring from BMO Financial Group where he served as Executive Vice President and Chief Economist, he was the first H. Ian MacDonald Visiting Economist with the Ontario government. He served as President of the Atlantic Provinces Economic Council after teaching in the Department of Economics at St. Mary's University in Halifax for 12 years. He has served as a consultant to several provincial governments, as well as the federal government. Dr. O’Neill is the first Canadian economist to be elected to the Board of Governors of the Washington-based National Association for Business Economics (NABE) where he served as president from October 2002 until September 2003.
Rudy G. Riedl is Vice Chair of the IESO Board of Directors and Chair of the IESO Human Resources and Governance Committee. Mr. Riedl has been involved in the Canadian and North American energy business for more than 33 years. Since his retirement from Enbridge, where he last served as president of Enbridge Consumers Gas from 1997 to 2001, he has served as president of R.G.Riedl Consulting Inc. Mr. Riedl has extensive experience in the management and restructuring of regulated utilities, energy policy development and organizational effectiveness.
William J. Museler is Chair of the IESO Audit Committee. Mr. Museler was most recently President and CEO of the New York Independent System Operator (NYISO). Prior to his service at NYISO, Mr. Museler held senior positions at the Tennessee Valley Authority (TVA), Long Island Lighting Company (LILCO), and Brookhaven National Laboratory. He has served as a federal representative for the North American Electric Reliability Council (NERC) and as chairman of the Southeastern Electric Reliability Council (SERC). He is currently a member of the Secretary of Energy’s Energy Advisory Board (EAB). A graduate of the Pratt Institute with a Bachelor of Science in Engineering Science, Mr. Museler also holds a Master of Science degree in Mechanical Engineering from Worcester Polytechnic Institute.
David Cassivi is a career educator having taught in the Windsor Board of Education for 33 years. Mr. Cassivi has also served the people of Windsor in municipal politics for over three decades, first as a Separate School Trustee and then as a city councillor from 1982 to 2006. He also has experience in the energy sector having served first as a member and then Chair of ENWIN Utilities, Windsor's local distribution company. Mr. Cassivi has been a member of numerous community boards, including Chair of the Windsor Separate School Board and Windsor's International Relations Committee, Vice-Chair of the Windsor Detroit Tunnel Commission and the Windsor Police Services Board and Member of the Windsor Canada Utilities Board, the Essex Region Conservation Authority and the Windsor Essex County Health Unit. Mr. Cassivi holds a Bachelor of Arts from St. Mary's University, a Bachelor of Education from the University of Toronto and a Master of Education from the University of Virginia.
Angela Ferrante is an experienced Board Director and has held several senior executive positions, most recently as Chief Operating Officer of the Ontario Energy Board. Prior to that, she was Senior Vice President, Corporate Communications at BMO Financial Group, Vice President, Public Affairs at Ontario Power Generation, and Executive Vice President and Chief Operating Officer of the C.D. Howe Institute. Formerly a journalist, she has worked for a number of publications including Maclean's, where she served as Assistant Managing Editor. Ms. Ferrante plays an active role in the community, and has served on a number of not for profit Boards. She was most recently appointed Chair of the Toronto Central Local Health Integration Network and is also a member of the Board with VIA Rail Canada and Ombudsman for Banking Services and Investments. Ms. Ferrante holds the Institute of Corporate Directors’ ICD.D (Certified Director) designation.
Bruce Campbell is President and Chief Executive Officer of the Independent Electricity System Operator. Under Mr. Campbell’s leadership, the IESO oversees the safe and reliable operation of Ontario’s bulk electrical system – one of the most diversified, reliable and efficient markets in the world. The organization also oversees the operation of Ontario’s wholesale electricity market. Mr. Campbell has over 30 years of regulatory and executive experience in the energy sector. In his most recent position as Vice President – Resource Integration, Mr. Campbell oversaw preparations in power system operations for the integration of an anticipated 10,700 MW of wind and solar generation in the province by 2018. Recruited from a successful legal career, where he regularly appeared before the Ontario Energy Board and other tribunals, Mr. Campbell joined the IESO as Vice President, Regulatory and Legal Affairs in 2000. Since that time Mr. Campbell has taken on an increasingly wide range of executive responsibilities. In addition, Mr. Campbell serves as a member of NERC’s Member Representative Committee and of the ISO/RTO Council which works to develop effective processes, tools, and standard methods for improving competitive electricity markets across North America. A member of the Law Society of Upper Canada, Mr. Campbell also holds the Institute of Corporate Directors’ ICD.D (Certified Director) designation.
Tricia O’Malley twice served as the Chair of the Canadian Accounting Standards Board (AcSB) from July 2009 to October 2010 and from 1999 to 2001. She was also a member of the AcSB’s Emerging Issues Committee from its inception in 1988 until 1997 followed by a term as AcSB’s Vice Chair where she represented Canada on international groups that developed accounting standards. She continues to act as a senior advisor to the AcSB. In 2001 Ms. O’Malley became a founding member of the International Accounting Standards Board (IASB) in London, UK and later served as the Director of Implementation Activities. She also worked as a partner in the National Assurance and Professional Practice Group of KPMG Canada, with particular emphasis on financial instruments and structured finance transactions. While at KPMG she was Chair of the Ontario Securities Commission's Financial Disclosure Advisory Board and a member of the Independent Advisory Committee on Accounting and Auditing Matters of the Auditor General of Canada. Ms. O’Malley who started her career as an accountant after having graduated from the University of Manitoba is also a Past President of the Canadian Academic Accounting Association.
Helen Polatajko has over 35 years of experience in the technology services field. Ms. Polatajko was most recently Senior Vice President and Chief Information Officer (CIO) of CIBC Mellon for almost 15 years. Prior to this, she served as CIO for Mellon Financial’s subsidiary in Houston, Texas for five years. She was recognized as one of the Top 100 Women in Computing, acknowledging her achievements and contributions to information services and technology. Ms. Polatajko has served on the judging panel of the Canadian Information Productivity Awards (CIPA), is a founding member and currently on the Canadian Advisory Board of the CIO Executive Council that was established in 2005, and is on the Advisory Board of The Conference Board of Canada Council of CIOs. Ms Polatajko is currently serving on the Board of Tafelmusik Baroque Orchestra and Chamber Choir. Ms. Polatajko received her education from The University of Pittsburgh, in Pennsylvania, attaining a Bachelor in Science in Mathematics and Psychology degree, and graduated from The Stonier Graduate School of Banking at the University of Delaware.
John Wiersma has worked in the electricity sector for more than 37 years. He was appointed founding President & CEO of Veridian Corporation in 1999, and continued as Chair of the Board of Directors following his retirement in 2004.  Mr. Wiersma stepped down as Chair upon his appointment to the IESO Board of Directors in 2005.  He is an advocate for energy efficiency and electrical safety and serves on the board of directors of the Canadian Energy Efficiency Alliance, and the Electrical Safety Authority. Mr. Wiersma has also received a number of distinguished awards for his dedication to the electricity industry and to the local Ajax-Pickering community, where he lives.
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