Brian Gillespie was appointed as CS Energy’s Chief Executive Officer in June 2025, bringing executive and non-executive leadership experience from a diverse, international career spanning the mining, transport, logistics, technology, oil and gas, and health sectors. Brian holds the degrees of MBA, Bachelor of Science (Hons) and is a Fellow and Chartered Electrical Engineer with the IET.
Brian has led large organisations in Australia, Latin America and Europe with a track record of improving safety, operational efficiency and organisational culture. Brian’s leadership in safety, complex assets and mining operations aligns with CS Energy’s focus on modernising its asset portfolio and delivering on the Queensland Government’s Electricity Maintenance Guarantee.
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 April 2024 after acting in the role for 12 months. He leads CS Energy's CFO division, and is responsible for functions such as finance, energy and financial risk, digital and technology, procurement, business planning, performance reporting, and insurance.
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 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.