Emma Roberts was appointed as Acting CEO on 14 April 2025.
Her substantive role is EGM Customer and Growth. In this role, Emma spearheaded the development of a new low-cost, decarbonised, and flexible energy portfolio for the business. The division includes business development, future energy asset design and project management, retail sales, commercial partnerships, customer products, corporate affairs, and policy and regulatory advocacy.
Her in-depth knowledge of the National Electricity Market, coupled with her commercial acumen and leadership skills, has seen Emma hold a variety of senior roles since joining CS Energy in 2012. These include Senior Legal Counsel, Acting Executive General Counsel and Company Secretary, and Head of Future Energy.
Emma has developed a strong reputation for leading cross-functional teams to deliver positive business outcomes. She led the establishment of CS Energy’s retail function and has driven CS Energy’s pivot towards a customer-focused culture as the business diversifies in response to the transformation of the energy system.
Emma holds degrees in law and applied science. Prior to joining CS Energy, she was a senior associate at McCullough Robertson Lawyers for eight years, working in the corporate and intellectual property teams.
Andrew Buswell
Chief Operating Officer
BSc (Hon), MBA
Andrew Buswell joined CS Energy as Chief Operating Officer on 31 March 2025 to lead our operations across the company's generation fleet, aligning asset management and operational responsibilities with process safety.
With more than 30 years of global experience in the resources and mining sectors, Andrew has consistently delivered results in operational excellence, capital projects, and asset management through leadership roles at organisations including Rio Tinto, BHP, Orica, and Xenco Mining Services.
Andrew's ability to drive innovation and operational improvements across complex industries makes him a key contributor in maximising CS Energy's assets.
Cameron Collins
Chief Financial Officer
B Bus, CA, GAICD
Cameron Collins was appointed as Chief Financial Officer in April 2024 after acting in the role for 12 months. He leads CS Energy's Finance & Corporate Services division, and is responsible for functions such as finance, energy and financial risk, and compliance and assurance.
Prior to this, Cameron was CS Energy's Head of Finance, where he was responsible for financial reporting and management accounting, budgeting and forecasting, treasury, taxation, investment governance, and finance shared services.
Cameron joined CS Energy in 2009, during which time he has developed a thorough knowledge of the energy sector and demonstrated strong commercial and financial acumen and leadership capability, which has resulted in Cameron also holding other senior leadership and executive leadership roles including Head of Risk and Compliance and Acting Chief Financial Officer.
Prior to joining CS Energy, Cameron held several senior finance roles working in industry across both business advisory, and audit and assurance disciplines.
Barry Millar
Executive General Manager People, Safety, and Transformation
B. Eng (Hons) Mechanical Engineering
Barry Millar commenced as Executive General Manager People, Safety, and Transformation on 31 March 2025.
Prior to this appointment, Barry had been leading CS Energy's Asset Management division since September 2022, responsible for asset strategy, engineering, capital projects, unit overhauls, and plant data analysis.
Barry joined CS Energy from AGL, where he held numerous strategic leadership roles over 13 years including leading operational excellence and organisational transformation, as well as asset management across the entire generation, mining, and gas portfolio.
Before moving to Australia, Barry had been working in the energy industry in the UK since the late 1980s.
Mark Powell
Executive General Manager Stakeholder Relations and Corporate Governance
B Bus, LLB, MCPRA, MAICD
Mark Powell joined CS Energy as EGM Stakeholder Relations and Corporate Governance on 14 April 2025, providing strategic oversight across a range of critical functions, including corporate affairs, legal, company secretariat, internal audit, risk and compliance, and data governance functions.
He has more than 20 years’ experience in corporate and regulatory affairs, public policy, risk management and strategy, including senior executive roles leading multidisciplinary teams to develop and implement governance and sustainability strategies that enhance reputation and build stakeholder trust.
Mark is a management consultant and lawyer who has held leadership positions in companies across a number of highly regulated sectors in Australia and overseas, including energy, financial services and consumer goods. Prior to joining CS Energy, he served as General Manager Sustainability and Corporate Affairs at MLC Life Insurance.
Mark’s unique blend of experience will help ensure CS Energy remains at the forefront of the evolving energy landscape.