Leadership

For more than 30 years, Mr. Hart has held a variety of senior positions in the energy industry across Canada, currently as President and Chief Executive Officer for AltaLink. He also serves as Chair of the Board for Electricity Canada, where he helps guide the national association representing the Canadian electricity industry. Prior to joining AltaLink in 2017 as Executive Vice President and Chief Operating Officer, he was Berkshire Hathaway Energy Canada’s first Managing Director. Mr. Hart started his career with TransAlta and moved through a number of roles of increasing responsibility. As Director of Business Development for Western Canada, Mr. Hart 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, Mr. Hart joined Westcoast Power as VP Operations with accountabilities for their generating portfolio. He then went on to join Suncor Energy in utility operations and supply chain, which included the role of Senior Vice President of Supply Chain and Field Logistics. Mr. Hart is a registered Professional Engineer and has a Bachelor of Science in Electrical Engineering from the University of Saskatchewan.

Dave brings 30 years of financial experience to AltaLink, most notably with 22 years from the utility sector in Canada. His recent positions include vice president and controller of TransAlta and designated CFO of TransAlta Renewables. During his career with TransAlta, Dave was responsible for providing leadership and direction over TransAlta’s financial activities and control, principally in the areas of external reporting, corporate accounting and reporting, accounts payable, systems and process improvements. Dave is a member of the Chartered Professional Accountants of Alberta, and obtained his Certified Management Accountants designation in 1998.

Martha brings over 15 years of experience as legal and regulatory counsel in the energy and electricity sectors, as well as broad experience in Indigenous, landowner and stakeholder relations. Prior to joining AltaLink, Martha was the Vice President, Regulatory and Public Affairs for a natural gas processing and pipeline company. Under Martha’s leadership, the company was successful in obtaining a federal approval for an interprovincial pipeline project – only the second to be approved under new federal legislation. Martha also has extensive experience in Alberta’s electric regulated industry, having held legal roles at an electric distribution company and the Alberta Utilities Commission. Martha began her career practicing commercial litigation at a major international law firm. Martha has a Bachelor of Arts and Science from McMaster University, a Law degree from the University of Alberta, and a Master of Laws degree from the London School of Economics and Political Science. She is called to the bar in both British Columbia and Alberta.

Paul started his career at AltaLink in 2004, and has held a variety of positions in operations, internal audit and customer service. As the HVDC Operations Manager, Paul led the operational integration of AltaLink’s Western Alberta Transmission Line (WATL), Alberta’s first high voltage direct current line. In 2019, Paul led the development and implementation of AltaLink’s Wildfire Mitigation program, which was the first program of its kind to be approved by the Alberta Utilities Commission in Alberta. Paul has also worked at TransAlta, providing leadership in developing TransAlta’s enterprise risk management framework. Paul’s recent positions at AltaLink include Vice President, Projects, Vice President, System Operations and Director, Customer Services. Paul also currently serves on the board of directors for the Calgary Philharmonic Orchestra, as well as the Werklund Centre. Mr. Lee is a registered Professional Engineer with APEGA and has a Bachelor of Science in Computer Engineering from the University of Alberta, as well as an MBA from the Haskayne School of Business at the University of Calgary.

Jennifer brings over 25 years of experience in human resources and external affairs in energy, utilities, manufacturing and consulting. Prior to joining AltaLink, Jennifer was the Vice President, Sustainability and Stakeholder Relations and Vice President, Human Resources for a North American energy infrastructure company. In her role, Jennifer is responsible for creating a healthy organization that will enable AltaLink’s future success. Under her leadership, the HR team proactively identifies people challenges and anticipates organizational needs to establish an HR strategy that supports achievement of business goals and priorities that are aligned with business and regulatory requirements. Overlaying all of that is a passion for continuous improvement to create a performance-driven culture and best in class employee experience. Jennifer has a Bachelor of Management degree, along with certifications in Human Resources, Compensation and Strategic workforce planning. Jennifer also serves as the Vice Chair of the Board for the Canadian Immigrant Women’s Association, an agency that focuses on the unique needs of immigrant and refugee women, and their families.

With over 36 years of experience in the energy industry, Mike has held leadership roles in many aspects of both power transmission and generation in Alberta, most recently as Vice President, Business Transformation at AltaLink. Mike started his career with TransAlta and progressed through a variety of roles with increasing accountabilities over his 18 years there. As Vice President & Chief Engineer, Mike was responsible for engineering activities and technical decision making for TransAlta’s power generation fleet of thermal, gas, wind and hydro assets. Following TransAlta, Mike joined AltaLink as Vice President, Asset Management, and in 2020 took on the expanded role of Vice President, Operations where he applied his experience to lead the asset management, engineering, operations and maintenance areas. Mike was elected and held the role of President of CIGRE Canada, a non-profit industry association, from 2014-2022 and remains an active executive member. Additionally, Mike served on the board of the North American Transmission Forum from 2018-2025, including being Chair from 2021-2022. Mike holds a Bachelor of Science in Engineering from the University of Calgary. He has also completed an Executive MBA and is a registered Professional Engineer in both Alberta and Saskatchewan.

Cayla brings over 18 years of experience in the utilities industry. She began her career at AltaLink in 2005, and has held a number of increasingly senior customer service-based positions, including leadership roles spanning project execution, operational delivery, and regulatory engagement. As Vice President, Government Relations and Commercial, she is responsible for policy advocacy and engagement with all levels of government, and leading AltaLink’s commercial business including service contracts and execution of the Market Participant Choice process. Cayla holds a Bachelor of Arts in Communications and Culture from the University of Calgary.

With two decades of experience in the energy industry, Evan brings deep expertise across system operations, asset management and transmission operations. He currently serves as Vice President, Operations at AltaLink, providing strategic leadership across critical operational functions. Evan began his career at AltaLink in 2006, advancing through roles in System Operations, Asset Management and Internal Audit. In 2014, he joined SaskPower, where over nine years he held progressively senior leadership roles, leading control room operations for Saskatchewan’s bulk electric system, including real‑time transmission and capacity management, outage coordination and energy management system operations. Evan returned to AltaLink in 2023 as Vice President, System Operations & Asset Investment Planning, leading system operations, asset investment strategy and wildfire management. Evan holds a Bachelor of Science in Electrical Engineering from University of Saskatchewan and is a registered Professional Engineer in Alberta.

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.

Dave Collyer has over 40 years of experience in the Canadian energy sector. 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 public and regulatory advocacy, and in education, communication and engagement. Since 2015, Mr. Collyer has served on a number of corporate and public sector boards and provided consulting and advisory services to the private sector and governments. Prior to joining CAPP in 2008, he 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. Mr. Collyer holds a Bachelor of Science in Mineral Engineering (1977), specializing in Petroleum Engineering, and a Masters of Business Administration (1978), both from the University of Alberta.

For more than 30 years, Mr. Hart has held a variety of senior positions in the energy industry across Canada, currently as President and Chief Executive Officer for AltaLink. He also serves as Chair of the Board for Electricity Canada, where he helps guide the national association representing the Canadian electricity industry. Prior to joining AltaLink in 2017 as Executive Vice President and Chief Operating Officer, he was Berkshire Hathaway Energy Canada’s first Managing Director. Mr. Hart started his career with TransAlta and moved through a number of roles of increasing responsibility. As Director of Business Development for Western Canada, Mr. Hart 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, Mr. Hart joined Westcoast Power as VP Operations with accountabilities for their generating portfolio. He then went on to join Suncor Energy in utility operations and supply chain, which included the role of Senior Vice President of Supply Chain and Field Logistics. Mr. Hart is a registered Professional Engineer with a Bachelor of Science in Electrical Engineering from the University of Saskatchewan.

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, Generate Canada, the BC Centre for Innovation and Clean Energy Advisory Council and the University of Alberta Business Advisory Council. Steve was honored in 2018 to be inducted as a member of the Kainai Chieftainship.

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.

Ms. Riddell Rose is the President, Chief Executive Officer and a Director of Rubellite Energy Inc. (and its predecessors Perpetual Energy Inc. and Paramount Energy Trust). 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.

Edward W. Rihn, is president and CEO of BHE Transmission, which is comprised of AltaLink, BHE Canada, BHE Montana and BHE U.S. Transmission. Prior to this role, Ed served in various leadership roles within BHE Canada, AltaLink, and Air Products and Chemicals. Ed has 30 years of experience, including business development, corporate development, government relations, indigenous relations, customer service, consultation, project management and construction management. His career spans industrial gases and chemicals, hydrogen, pipelines, power generation and electric transmission. Rihn holds a bachelor of science in civil engineering from Clarkson University and an executive master’s in technology management from the University of Pennsylvania. He currently serves as a member of the Canadian American Business Council’s board of directors, TransCanyon LLC board of management, AltaLink board of directors and the Kiski School board of visitors. He is the immediate past chair of the YMCA of Calgary

Mr. Thon served as president and CEO of Berkshire Hathaway Energy from 2023-2025, president of operations for Berkshire Hathaway Energy from 2022-2023, president and CEO of BHE Canada from 2014-2022, and CEO of AltaLink from 2002-2022. For over 35 years, Mr. 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.

Mr. Thon serves as a director of AEGIS Insurance Services, Inc., Aecon Group Inc. and the Edison Electric Institute. Mr. Thon was presented with the Queen Elizabeth II Platinum Jubilee Medal (Alberta) in 2022 by the government of Alberta. Mr. Thon has been recognized by Business in Calgary magazine with their Leaders award and the Calgary Chamber of Commerce for his business and community leadership. In 2025, the University of Saskatchewan Alumni Association presented Mr. Thon their highest honor, a Lifetime Achievement Alumni Award. In 2024, Bow Valley College awarded Mr. Thon an Honorary Diploma and previously their Distinguished Citizen Award for his commitment to the college.

Mr. Thon is a registered professional engineer with a bachelor’s degree 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, Mr. Thon completed the Institute of Corporate Director’s Directors Education Program receiving his ICD.D designation.

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.

Scott Riddell is the Senior Vice President and CFO of BHE Transmission. Previous to this role he served as SVP Corporate Development for Berkshire Hathaway Energy. Mr. Riddell has enjoyed an extensive career in strategic business analysis and corporate acquisitions. His career includes over two decades as a capital markets professional focusing on mergers and acquisitions, financial analysis and capital formation, as an entrepreneur and executive in various financial services and energy businesses. Mr. Riddell holds a Bachelor of Commerce degree from the University of Alberta and a Master of Applied Positive Psychology from the University of Pennsylvania.