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. He leads CS Energy's key plant operations functions including operations and maintenance, engineering services and governance, overhauls, process safety, performance reliability and analytics, and health, safety and environment.

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 2024 after acting in the role for 12 months. Leading the CFO division Cameron is responsible for the Finance, Enterprise Planning, Reporting and Analysis, Procurement and Digital and Technology functions.

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.

 

Mark Powell

Chief Corporate Services Officer
B Bus, LLB, MCPRA, MAICD

Mark Powell leads CS Energy’s Corporate Services Division, overseeing corporate affairs, policy and regulation, legal and company secretariat, internal audit, and governance, risk and compliance functions.

Partnering with the Board and Executive Leadership Team to advance CS Energy’s trust agenda through policy and regulatory leadership, strategic communications, and stakeholder engagement, he also ensures CS Energy deploys robust legal and governance frameworks and directs a unified second-line governance and risk capability, including energy and financial risk oversight, analytics, controls, and assurance to drive business improvement and disciplined decision-making.

With more than 20 years’ experience in corporate and regulatory affairs, public policy, risk management, and strategy, Mark has held senior leadership roles in highly regulated sectors in Australia and overseas, including energy, financial services, professional services, and consumer goods. A lawyer and former management consultant, he has led multidisciplinary teams to design and implement corporate strategies, action plans and governance and risk frameworks that deliver business outcomes and enhance reputation and stakeholder trust.

Prior to joining CS Energy, Mark was General Manager Sustainability and Corporate Affairs at MLC Life Insurance. He holds a Bachelor of Business and a Bachelor of Laws and is a member of the Australian Institute of Company Directors.

 

Sophie Sangster

Chief Commercial Officer
LLB, GradDipLegPrac, LLM

Sophie Sangster joined CS Energy as General Counsel in 2024 and was appointed to the position of Chief Commercial Officer in October 2025, having acted in the role for two months. She is responsible for CS Energy’s trading team, retail business, commercial partnerships, joint ventures, and resources supply and plays a key leadership role in the development of our business strategy.

Sophie has 20 years’ experience in both private practice and in-house legal and commercial teams. Prior to joining CS Energy, she was Head of Commercial and Risk at an ASX-listed infrastructure contractor and has extensive experience across sectors such as government, energy, facilities services, defence, utilities, roads, transport, and major infrastructure projects.

 

Katie Whittle

Chief Energy Transition Officer
MEng (Oxon)

Katie Whittle joined CS Energy as Chief Energy Transition Officer in January 2026. In this role she leads the teams responsible for developing new energy generation and storage projects, and CS Energy’s corporate strategy and sustainability plan. Katie is motivated by the opportunity to strengthen CS Energy’s financial resilience and advance our future asset portfolio to support the realisation of a sustainable energy transition.

Katie joined CS Energy from Shell where she held senior executive roles with Shell and Shell joint ventures in the offshore wind, oil and gas sectors in a career that has covered roles in the UK, Europe, Africa and Australia. Her most recent role prior to joining CS Energy was General Manager, Engineering and Execution, for Shell’s Global Offshore Wind business, where she was responsible for the full lifecycle of Shell’s offshore wind capital project portfolio.

Throughout her career, Katie has led the development and delivery of major energy assets, including natural gas, offshore wind, and emerging low-carbon technologies. She is widely recognised for building inclusive, high-performing teams and cultures of trust, accountability, and collaboration. She has a strong track record in delivering complex infrastructure and energy transition initiatives and is well positioned to lead CS Energy’s transformation and contribute to our long-term growth strategy.