The Largest Single Family Offices in Australia
Australia's family office landscape is growing fast — from mining and resources dynasties to real estate and clean energy investors. Our database covers the most significant Australian single family offices, from Sydney and Melbourne to Perth.
Australian clean-technology manufacturer Graphite Energy has secured $40 million in funding to accelerate the large-scale deployment of its Green Steam thermal energy storage systems. The round comprises a loan facility from Catalytic Impact Capital alongside an equity subscription agreement led by the family office of Lyall and Toni McLachlan, supported by existing shareholders and a new institutional investor. Graphite Energy designs, manufactures, and operates advanced electric boiler systems that use thermal energy storage to capture low-cost renewable electricity and deliver steam at a price point intended to undercut natural gas. The technology allows industrial manufacturers to replace conventional gas boilers with renewable electric heat, reducing both operating costs and carbon emissions. The company is currently installing two Green Steam systems with major multinational food and beverage companies, with eight additional projects progressing through detailed engineering. CEO Peter Lemmich described the funding as a major milestone, citing accelerating customer demand and the company’s increased capacity to deploy at scale.
About the Australian McLachlan Family Office
The McLachlan family office is the private investment vehicle of Lyall and Toni McLachlan and served as the lead investor in Graphite Energy’s latest funding round, acting in conjunction with a new undisclosed institutional investor and existing shareholders.
Source: ESDNews (07.04.2026)
Picture Source: Getty Images, Unsplash+
Last Updated on June 2, 2026
