John Haffner is a highly experienced sustainability executive hailing from Hong Kong, with a focus on Asia, including China, Japan, and Southeast Asian markets. He has an impressive educational background that includes two law degrees from McGill University, with a call to the bar in the Province of Ontario, and has also been a lecturer in Climate Change and Energy Law at McGill's Faculty of Law. Additionally, he has diverse experiences as a consultant and lawyer, spanning over two decades in the cleantech, infrastructure, and sustainability spheres. Haffner is also a Yale World Fellow and an Asia Society Asia 21 Young Leader.

Over the years, Haffner has worked with various organizations at different capacities to help them achieve their sustainability goals, including Hang Lung Properties, Robert Lee Law Offices, and Bridge Renewable Energy Technologies. As Founder and President of Haffner Group, he played a prominent role in shaping the future of cleantech and sustainability in Asia. Besides, as an author of over 20 publications on various topics like energy, environment, and international affairs, John Haffner is a well-known name in the industry.