Leadership Team

Committed to our customers

From the field to the office, our people have always been our greatest competitive advantage. The incredible strength of our team around the world has enabled us to assemble an exceptionally experienced Executive Team. Comprised of talented business leaders from a diverse range of industries, our team brings decades of operational excellence and a shared, unwavering commitment to our customers.


Our Leadership Team

  • John Ivulich, Country Chair
    John Ivulich

    John Ivulich

    Country Chair


    John was appointed Country Chair of ATCO Australia in March 2023, and is the first Australian to be appointed to the position for the Canadian based company.  John will also continue as Chief Financial Officer, a position he has held since August 2014.  John joined ATCO as Director, Finance when the company acquired WestNet Infrastructure Group in 2011, having been with the organisation since 2006, when it was Alinta. 

    As Country Chair, John is responsible for stewarding and representing the company’s broad interests with government and regulatory stakeholders across all lines of business in Australia. In his role, John will continue to hold the strategic financial planning responsibility for ATCO in Australia and oversees the delivery of all common group functions that support our Distribution, Renewables and emerging Transmission business in Australia. 

    John is a Chartered Accountant and holds a Bachelor of Commerce degree, majoring in Accounting & Finance from the University of Western Australia and completed an Executive Leadership programme at Ivy Business School in Canada.  John is also a member of the Institute of Company Directors in Australia and completed an Applied Finance & Investment Diploma with FINSIA. 

    John was born in Western Australia and is married with two adult sons.

  • Catherine Stevenson, Group Financial Controller
    Catherine Stevenson

    Catherine Stevenson

    Catherine Stevenson, Group Financial Controller


    Catherine has served as a member of the ATCO team for more than ten years and was appointed Group Financial Controller in early 2023. Catherine has built extensive expertise in her previous position as ATCO Finance Manager, Group Reporting where she was responsible for the reporting to ATCO’s Canadian parent, and the local statutory and compliance reporting, including financial statements and tax returns. A Fellow of the Institute of Chartered Accountants, Catherine’s career has included roles at KPMG, BHP and Alinta.

  • Karen Nielsen, Managing Director, Global Renewables
    Natalie O'Malley

    Karen Nielsen

    Managing Director, Global Renewables


    Karen was appointed to Managing Director, Global Renewables in November 2021 after rejoining ATCO in June 2021 as Senior Vice President, Renewables North America. Based in Sydney, Karen is responsible for ATCO’s global renewables business with a key focus on Australia. With over 30 years’ experience in the global energy sector, Karen brings a wealth of experience in strategy, innovation and project execution.

    Karen holds a Bachelor of Science degree with distinction in Electrical Engineering from the University of Saskatchewan and is a licensed professional engineer of APEGA, and APEGBC; as well as a certified Corporate Director (ICD.D).

  • Russell Godsall, Executive General Manager, ATCO Gas Operations
    Russell Godsall

    Russell Godsall

    Executive General Manager, ATCO Gas Operations


    Russell was appointed Executive General Manager, Gas Operations in June 2023, bringing more than three decades of experience in the energy industry.  Prior to his appointment as Executive General Manager, Russell was General Manger Network Operations, and held various other management positions for ATCO, and its predecessor companies, WA Gas Networks and WestNet Energy Services.

    Russell has extensive experience working with multiple professional disciplines in the development of strategic initiatives driving transformational business change.  He has a passion for learning and improvement with a team and technology lead innovation focus, and a track record of developing and leading medium to large size high performance teams.

    Russell graduated from Curtin University with a Bachelor of Commerce, and has a Graduate Certificate in Business, Business Administration and Management from The University of Western Australia.  He recently completed the Executive Leadership Development Program at The Ivey Academy at Ivey Business School.  Russell is also an Associate Fellow at the Australian Institute of Management.

  • Simon Byrne, General Counsel & Company Secretary
    Simon Byrne

    Simon Byrne

    General Counsel & Company Secretary


    Simon joined ATCO's Australian Gas Division in 2010 and has held various executive positions including Senior Legal Counsel and General Manager, Commercial Services.  Since December 2013 he has been part of ATCO's Executive Management team and holds responsibility for HSE, Facilities Management, Risk Management, Insurance and Internal Audit co-ordination, while also providing legal advice across all ATCO companies in Australia.  Additionally, Simon is Company Secretary and an Executive Director of ATCO Australia.  A qualified lawyer, he holds Bachelor of Jurisprudence and Bachelor of Law degrees from the University of Western Australia.

  • Emma Harris, General Manager Human Resources
    Emma Harris




    Emma joined ATCO Australia as General Manager Human Resources in February 2023. Emma has built 20 years’ experience in Human Resources through prominent roles at Rio Tinto and BHP, in which she has garnered significant experience in HR operations, leadership and culture, employee relations, and talent management. Emma has a Bachelor’s of Law and Business from the University of Newcastle. Emma continues to combine her experience with education, currently studying the Psychology of Leadership at Curtin University in Western Australia. 

  • Adam Stavretis, General Manager Corporate Development
    Adam Stavretis

    Adam Stavretis

    General Manager Corporate Development


    With more than 15 years’ experience in the energy sector, Adam was appointed to the Executive Team as General Manager Corporate Development in March 2023. Adam has held diverse roles within ATCO including as an Accountant, Financial Controller, General Manager of ATCO subsidiary, Source Energy and most recently Senior Manager, Corporate Development. He is an accomplished and performance driven leader, seasoned with a background in strategy development, finance and operations management. Adam has previously worked at WestNet Infrastructure Group and Alinta Energy.  He is also a Chartered Accountant.

  • Hugh Smith, General Manager, Regulatory Strategy & Policy
    Hugh Smith

    Hugh Smith

    General Manager, Regulatory Strategy and Policy


    Hugh was appointed General Manager Regulatory Strategy and Policy in March 2023, having first joined ATCO’s Australian Gas business in 2017 as Manager Regulatory Strategy. Hugh has held subsequent roles with ATCO in economic regulation, energy policy, customer experience and corporate affairs. Hugh brings more than 18 years’ experience in the Western Australian energy sector, having held various regulatory and energy policy positions with Western Power and the Public Utilities Office. Hugh holds a Bachelor of Engineering (Information Technology) and a Masters of Business Administration from the University of Western Australia.  

  • ​Stevan Green, Executive General Manager Sustainability & Government Relations
    Stevan Green



    Stevan was appointed President ATCO’s Gas Division in August 2018 having first joined the business in 2017 as General Manager Assets and Engineering Innovation. He has more than 25 years’ experience in the resources industry including senior roles with Shell and BHP. Stevan’s expertise covers project management, compliance and managing external business risks, and the practical application of state-of-the-art technologies. He holds a Bachelor of Engineering (Mechanical) from the University of Western Australia and is a ​Chartered Member of the Institute of Engineers Australia and a Graduate of the Australian Institute of Company Directors.