Stew became Mercury’s Chief Executive in September 2024. He joined Mercury in 2021 as the Executive General Manager, Generation, and was responsible for the management, operation and maintenance of our electricity generation assets.

Before joining Mercury, Stew was the Chief Executive at New Zealand Aluminium Smelters Ltd and has over 25 years’ experience working for industrial energy customers in mining, minerals processing and manufacturing in Australia, New Zealand and Africa.

Stew has a Chemical Engineering degree from Auckland University and an MBA from Melbourne University. With a proven track record of success in leading large, complex businesses, he is well placed to ensure Mercury capitalises and builds on its strong platform for growth.

Richard oversees Mercury’s financial strategy and operations.

Richard joined Mercury in 2025 bringing over 25 years of experience in finance and primary industries. Before joining Mercury, he was the CFO of Zespri International Ltd and held roles at Ballance Agri-Nutrients, HSBC, Credit Suisse, and Westpac. Richard holds a degree in Finance and excels in corporate finance, M&A, business transformation, and strategy development.

Michele Mauger joined Mercury in 2026, bringing more than 35 years’ experience across people and culture, including nearly two decades in executive leadership roles.

Michele has led people functions across a range of industries and geographies, with experience spanning business transformation, organisational change and the full employee lifecycle. She joined Mercury from Vocus in Melbourne and was previously Chief People Officer at Cleanaway. Michele has also held executive leadership roles with Incitec Pivot, Metro Trains Melbourne, Thiess and Worley Parsons.

Craig leads the development and execution of Mercury’s enterprise-wide strategy for long-term, sustainable growth. His role integrates strategic planning, business transformation, and technology to drive the company’s future success.

Craig joined Mercury in 2021. He has extensive leadership experience in retail, wholesale markets, and trading, with proven success in driving strategic growth. He holds academic qualifications from University of Canterbury and MIT Sloan.

Suraiya leads Mercury’s customer strategy. This includes a focus on innovation and delivering value and care to customers and their evolving needs.

Suraiya joined Mercury in 2025 bringing more than 20 years’ local and international experience in customer strategy, marketing and brand across financial services, telecommunications, and technology, including executive level roles at Suncorp NZ and Westpac NZ.

Kevin oversees the safe operation and maintenance of Mercury's electricity generation assets.

Kevin joined Mercury in 2025, bringing over three decades of experience in large industry, focusing on operational excellence, risk management, and safety leadership. Most recently, Kevin was General Manager (Operations) supporting multiple Rio Tinto Sites and has previously been General Manager of operations in both Queensland and Tasmania. Kevin strives to build high performing teams and to deliver safe, quality outcomes.

Catherine leads Mercury’s strategy to embed sustainability into the heart of Mercury's business, aligning environmental, social, and governance performance with long term value creation.

As part of this role she is responsible for sustainability, corporate affairs, stakeholder engagement, and environmental management. Catherine joined Mercury in 2025, bringing over 30 years of experience in the energy and legal sectors, including executive level roles at Contact Energy and Manawa Energy. She has deep expertise across corporate affairs functions as well as sustainability and consenting, strategy and risk management.

Tim is responsible for managing Mercury’s overall electricity portfolio with specific responsibility for all wholesale market activities and sales to large commercial and industrial customers.

Tim joined Mercury in 2005 and has held a range of roles across the business including GM Wholesale and Head of Treasury and Investor Relations.

Matt leads Mercury’s generation development and is responsible for planning, developing and delivering new renewable generation.

Matt joined Mercury in 2022 and is an infrastructure professional and engineer with 20 years’ experience developing and delivering large and complex utility infrastructure in the US and NZ.