About Us

Sustainability Wise is a specialised consultancy committed to accelerating Australia's transition to a cleaner, more sustainable economy. Building on a foundation of deep industry knowledge and a passion for environmental stewardship, our team provides strategic and technical expertise to businesses and organisations seeking to reduce their environmental impact and embrace sustainable practices.

Our approach is rooted in rigorous analysis and tailored solutions. We offer comprehensive services, from identifying and implementing energy efficiency upgrades in buildings and facilitating the transition away from gas, to strategically assessing and managing the lifecycle of renewable energy and battery storage projects.

  • Allan O' Connor

    MANAGING DIRECTOR

    Allan is the former Defence Renewable Energy & Energy Security Program (DREESP) Manager, with over 50MW of renewable energy installed or under development across 25 Defence bases. He is also the former Defence Ecological Sustainable Development (ESD) Program Manager, delivering over $8m in innovative waste, energy and water efficiency projects per annum, and author of the Defence Smart Infrastructure Manual. Allan has 15 years’ experience delivering energy & environmental strategy and programs in large, complex and geographically spread organisations

  • Andrew Sheed

    DIRECTOR

    Andrew is a Director at Sustainability Wise, providing strategic, technical, and commercial advice on engineering projects to a range of clients around Australia. Andrew’s background is as an EPC and client-side project manager and engineer. He has worked primarily on sustainability, renewable energy, and engineering projects.

  • Johnny Walker

    METERING & DATA MANAGER

    Johnny has been involved with the Department of Defence for over 10 years and has assisted Defence with the design, supply, and installation of Multi Utility (Electricity, Water, and Gas) Metering for the National Sub Metering Program. He has worked alongside EMOS and Defence to provide guidance and support with maintenance, fault diagnosis, and repairs to all types of Metering devices across the Defence Estates. Johnny has also worked in the Renewable Energy (solar) and Generation (diesel generators) sector and EV Charging space to design a compact Metering Solution for Chargers.