Board of Directors

David Tuer - CHAIR

Since November of 2013, Mr. Tuer has been the Chairman of Optiom Inc.; in 2015 he became Executive Chairman. From May 2008 until June 2015, he was the Vice Chairman and CEO of Teine Energy Ltd. He is an independent businessman and was Chairman of the Calgary Health Region from 2001 to 2008. He has held senior executive positions in various energy companies throughout his career.   

He is the former President and Chief Executive Officer of PanCanadian Petroleum Limited, prior to its merger in 2002 with the Alberta Energy Company to form EnCana Corporation. He also serves on the Board of Directors of Canadian Natural Resources Limited.

David R. Collyer - DIRECTOR

Dave Collyer is an experienced strategic and operational leader in the Canadian energy sector, with a strong focus on integration of technical, economic and public policy considerations in business decision-making.

He currently provides consulting services to the Canadian energy sector and serves on a number of corporate and public sector boards.

Mr. Collyer was President and CEO of the Canadian Association of Petroleum Producers (CAPP) from September 2008 until December 2014. In this capacity, he was responsible for leading CAPP’s activities in education, communication and engagement, and policy/regulatory advocacy.

Prior to joining CAPP, Dave Collyer was President and Country Chair for Shell in Canada. During his thirty-year career with Shell, Mr. Collyer held a broad range of technical, business, marketing, and senior leadership roles. He also participated in a two-year Executive Exchange assignment with the federal government in Ottawa (1989 to 1991) as Director, Supply Branch at the National Energy Board.

Dave Collyer holds a Bachelor of Science in Mineral Engineering specializing in Petroleum Engineering (1977) and a Masters of Business Administration (1978), both from the University of Alberta.

Calvin D. Haack - DIRECTOR

Calvin D. Haack, 51, is senior vice president and chief financial officer at Berkshire Hathaway Energy. Haack is responsible for managing all aspects of the company's financial operations.

Haack supports the evaluation, negotiation and closing of the company's domestic and international financings, acquisitions, and project developments. Additionally, he manages all accounting, financial reporting, tax, budgeting, long-range financial planning and internal audit functions for the company.

Haack was previously Berkshire Hathaway Energy’s vice president and treasurer since 2010 and has held numerous finance and accounting roles at subsidiaries of Berkshire Hathaway Energy since 1997.

Haack has more than 20 years of energy industry experience covering accounting and finance functions. Before entering the energy sector, he was a certified public accountant working for public accounting firms across the Midwest and focusing on audit and tax engagements.

Gary Hart - DIRECTOR

For more than 30 years, Gary has held a variety of senior positions in the energy industry across Canada, most recently as Managing Director for Berkshire Hathaway Energy Canada.

Gary started his career with TransAlta and moved through a number of roles of increasing responsibility. As Director of Business Development for Western Canada, Gary developed two Alberta cogeneration projects before moving to Ontario, when he was VP of Operations, Eastern Canada for TransAlta Limited Partnership. 

Following his tenure at TransAlta, Gary joined Westcoast Power as VP Operations with accountabilities for their generating portfolio. Gary then went on to join Suncor Energy in utility operations and supply chain, most recently as their Senior Vice President of Supply Chain and Field Logistics.

Gary has a Bachelor of Science in Electrical Engineering from the University of Saskatchewan.

Natalie Hocken - DIRECTOR

Ms. Hocken is Senior Vice President and General Counsel of Berkshire Hathaway Energy, responsible for legal matters, environmental, human resources and insurance, across all Berkshire Hathaway Energy businesses. Prior to taking this position, Ms. Hocken served as a senior executive in various roles, including general counsel, strategic initiatives and transmission and system operations at PacifiCorp. In this role she was responsible for a breadth of legal and strategic priorities, including overseeing transmission and market development, open access transmission services and transmission planning for one of the largest privately held transmission systems in the western U.S. Ms. Hocken joined PacifiCorp in 2002 where she held various leadership positions.

Prior to joining PacifiCorp, Ms. Hocken was an energy attorney with the law firms of Heller Ehrman LLP and LeBoeuf Lamb Greene & MacRae LLP in Portland, Oregon. She earned a Bachelor’s degree in 1991 from the University of Washington and a Juris Doctorate degree in 1994 from the University of Oregon. She completed the Utility Management Certificate Program offered by Willamette University Atkinson Graduate School of Management in December 2005.

Patricia Nelson - DIRECTOR

Ms. Nelson is currently the Vice-Chair of the In Situ Oil Sands Alliance, and is the Managing Director of the Board of Directors. She is also currently a Member of the Board of Directors of WHY Resources Ltd., and OPTIOM Inc. Ms. Nelson is a former Chief Executive Officer of the Calgary Health Trust and a former elected Member of the Legislative Assembly for Calgary Foothills. In her four terms with the Alberta Legislature, Ms. Nelson served as Minister of Finance and Chair of the Treasury Board, preceded by her roles as Minister of Energy, Minister of Economic Development and Tourism, Minister of Government Services, and Deputy Government House Leader.

Ms. Nelson graduated from the University of Calgary with a Bachelor of Commerce degree and gained years of finance related experience in the oil and gas industry prior to entering Alberta politics. She previously was the Controller of Sabre Energy Ltd, and Petroterra Natural Resources Ltd., and the Manager of Financial Control with Suncor Inc.

Susan Riddell Rose - DIRECTOR

Ms. Riddell Rose is the President and Chief Executive Officer of Perpetual Energy Inc. and predecessor Paramount Energy Trust since inception in 2002. Prior thereto she was Chief Operating Officer for Paramount Resources Ltd. and prior thereto a geological engineer with Shell Canada Limited.

Ms. Riddell Rose graduated from Queen's University at Kingston, Ontario in 1986 with a Bachelor of Applied Science in Geological Engineering. She is a member of the Association of Professional Engineers, Geologists and Geophysicists of Alberta, the Canadian Society of Petroleum Geologists and the American Association of Petroleum Geologists and serves as a governor for the Canadian Association of Petroleum Producers.

Scott Thon - DIRECTOR

Scott W. Thon, 59, is president of operations for Berkshire Hathaway Energy, where he leads a group of diverse energy businesses located in the U.S., Canada and Great Britain.

He previously served as president and CEO of BHE Canada since 2014 and the CEO of its largest Canadian subsidiary, AltaLink, since 2002. For over 30 years, Thon has held a variety of senior positions in the energy industry, from operations and engineering to market design and financial management. He has led the investment and construction of significant energy infrastructure developments in Alberta, Canada and globally.

Thon is a former chair of the Canadian Electricity Association’s Board of Directors.

Thon was presented with Queen Elizabeth II’s Platinum Jubilee Medal (Alberta) in 2022 by the Government of Alberta. In 2017, Thon was recognized by Business in Calgary magazine with their Leaders award. In 2013, Bow Valley College awarded Thon their Distinguished Citizen Award honoring his commitment to the college. In 2011, Thon was recognized by the Calgary Chamber of Commerce for his business and community leadership with the Sherrold Moore Award. In 2005, The Government of Alberta presented Thon with the Alberta Centennial Medal in recognition of outstanding service to the people and province of Alberta.

Thon is a registered professional engineer with a bachelor of science in electrical engineering from the University of Saskatchewan. He is also a graduate of the Executive Program from the University of Western Ontario's Richard Ivey School of Business. In 2015, Thon completed the Institute of Corporate Director’s Directors Education Program receiving his ICD.D designation.

Brad Wall - DIRECTOR

Since 2018, Mr. Wall has acted as a Special Advisor for the Calgary law firm Osler, Hoskin, and Harcourt LLP and is also Principal at Flying W Consulting Inc and partner in CW Cattle Co. Ltd. Prior thereto, he served as the 14th Premier of Saskatchewan from 2007 to 2018.

Mr. Wall graduated with honours from the University of Saskatchewan with a Bachelor of Arts in Public Administration. He is on the board of directors for NexGen Energy, Maxim Power, Whitecap Resources. He is an advisory board member for the Canadian Global Affairs Institute as well as the Canadian American Business Council. He volunteers as a member of the Canada Beef advocacy committee of the Canadian Cattlemen’s Assoc. He also serves as chair for both the STARS Fleet Replacement Committee.  

Steve MacDonald - DIRECTOR

Mr. MacDonald is currently Principal at +SM Advisory Services.  Previous to that, he was Chief Executive Officer for Emissions Reduction Alberta and served as Deputy Minister for the Government of Alberta in a number of portfolios, including innovation and climate change. 

As an experienced public sector leader, Mr. MacDonald has led major initiatives that improved the design and delivery of services and achieved better outcomes for clients, stakeholders and staff. He is currently focused on innovation, change management and the energy transition.  

Mr. MacDonald graduated from the University of Alberta with a Bachelor of Commerce. He is also a graduate of the Canadian Securities Program and has received his ICD.D designation. Mr. MacDonald is on the board of directors for the Canada West Foundation, The Natural Step Canada, Werklund School of Agricultural Technology, Olds College, and the BC Centre for Innovation and Clean Energy Advisory Council. 

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