Leadership

Martin Exelby

Chief Customer Officer

Martin Exelby was appointed Chief Customer Officer in June 2026. In this role, he is responsible for leading the company’s retail strategy, growth and performance, with a focus on delivering exceptional outcomes for its Red Energy and Lumo Energy customers.

He joined Red Energy in 2004, playing a key role in the establishment of the business, and became its Chief Financial Officer in 2014. Martin has more than 35 years’ experience in the energy industry across a range of commercial and strategic roles, including with Contact Energy in New Zealand and PowerGen in the UK.

Martin holds a Master of Arts in Metallurgy, Economics and Management from the University of Oxford and a Master of Science in Environmental Technology, specialising in energy policy, from Imperial College London.

Leadership

Iain Gauld

Chief Information Officer

Iain was appointed Chief Information Officer on 19 May 2025. In this role Iain is responsible for Snowy Hydro’s technology strategy, driving digital transformation, continuing to improve its operations and strengthening its cyber security.

Iain brings over 25 years of experience in IT strategy, leadership and digital transformation across multiple industry sectors. Prior to joining Snowy Hydro he held senior IT roles at Contact Energy, Macquarie Bank and JP Morgan Chase.

Leadership

Maia Schweizer

Chief Operating Officer

Maia was appointed Chief Operating Officer in July 2025, with responsibility for the day-to-day operations of Snowy Hydro’s diverse generation asset portfolio. Maia initially joined Snowy in March 2025 as Chief Transformation Officer to oversee the company’s multi-year transformation program and set it up for continued leadership in the evolving energy sector. 

Maia has more than 15 years of experience across generation operations, commercial strategy, marketing and capital project delivery. During this time Maia has held executive roles with Origin, Fortescue and most recently SunDrive Solar, a solar technology startup.

Maia has also served as CEO of Queensland Government-owned low-emissions electricity generation, trading and retail business CleanCo Queensland and currently serves as a non-executive director of Blue Economy CRC, a research cooperative focused on exploring opportunities for marine science and industry.

Leadership

Scott MacKillop

Chief Corporate Affairs Officer

Scott was appointed Chief Corporate Affairs Officer on 1 July 2024. With more than 25 years’ experience in communications and public relations, his background includes senior public affairs leadership roles within the NSW Government. He began his career in broadcasting, including working as a producer at leading news/talk station 2GB.

Immediately before joining Snowy Hydro, Scott served as Chief Corporate Affairs Officer at Western Sydney International Airport, where he led the reputation, stakeholder and social‑licence strategy for one of Australia’s most significant national infrastructure projects.

At Snowy Hydro, Scott leads the functions responsible for reputation management, sustainability, community engagement and social impact, brand, internal engagement, and media, stakeholder and government relations. He is passionate about delivering meaningful outcomes for people and communities as Australia navigates its energy transition.

Leadership

Catrina Cresswell

Chief Legal and Regulatory Officer

Catrina (BA, LLB) was appointed Chief Legal and Regulatory Officer in August 2023. Prior to joining Snowy Hydro Group, Catrina was General Counsel and Head of People & Culture at Sydney Metro. Catrina has more than 25 years of experience across the energy, infrastructure, transport and property development industries having held several senior legal roles for major publicly listed corporates and government entities.

Leadership

Suzannah Fletcher

Chief Governance, Risk and Compliance Officer

Ms Fletcher (BA, LLB, LLM, Grad. Dip. Legal Practice, Grad Dip. Corp.Gov, FGIA, GAICD, FCIS) was appointed Chief Governance, Risk and Compliance Officer on 31 January 2023. Prior to joining Snowy Hydro, Ms Fletcher held senior company secretary and corporate governance roles at the Commonwealth Bank of Australia, Westpac Banking Corporation, Allianz Australia Limited and ANZ Wealth Australia Limited.

Leadership

Dave Evans

Chief Delivery Officer – Snowy 2.0

Dave (B Eng (Civil) Hons) has been working on Snowy Hydro’s Snowy 2.0 project since its inception in April 2017 and was appointed to the Chief Delivery Officer role in May 2023.

Prior to joining Snowy Hydro, Dave was the Australia New Zealand Hydro-power and Dams Manager at SMEC. He has extensive experience as a designer and expert reviewer on international hydro-power projects in Australia, Nepal, Papua New Guinea and Kenya. Dave has particular interests in large unique projects that make a difference.

Leadership

Dennis Barnes

Managing Director and CEO, appointed 1 February 2023.

BSc (Hons), MBA, DipM

Dennis was appointed Snowy Hydro Chief Executive Officer and Managing Director of the Company in February 2023. Dennis has over three decades’ experience in the energy sector, with a focus on renewables and retail, and brings a wealth of strategic knowledge and proven capability in delivering strong performance across large energy businesses.

Leadership

Kim Josling

Chief Financial Officer

Kim was appointed CFO in February 2018 having joined the company two years earlier.  Prior to joining Snowy Kim held several senior management roles at Origin Energy Limited leading a broad range of finance, strategy, commercial, risk, internal audit and compliance activities. Kim joined Origin Energy in 2009 from its subsidiary, Contact Energy, where she was Chief Financial Officer. Before joining Contact, Kim worked with Deloitte (New Zealand and Canada), and related CA firms, gaining wide experience in the audit, advisory and consulting sectors, primarily in the energy, manufacturing and distribution industries.

Leadership

Gordon Wymer

Chief Commercial Officer

Gordon is Snowy Hydro’s Chief Commercial Officer, with responsibility for corporate strategy and development, merchant portfolio and risk, trading, M&A and third party energy and capacity procurement. Gordon’s 25 year involvement in the energy industry started with 10 years of energy industry advisory, mergers and acquisitions roles at Fay, Richwhite and UBS. Gordon joined Snowy Hydro in 2003. He was formerly the CFO and has played a leading role in Snowy’s evolution from generator to its position as the fourth pillar in the National Electricity Market.