Allan Marks is a Senior Fellow at the Columbia Center on Sustainable Investment, a joint center of Columbia University’s Law and Climate schools.He teaches law and finance at the University of California, Berkeley and at UCLA, where he is Affiliated Faculty at the Emmett Institute on Climate Change and the Environment. He is also a Distinguished Scholar in Energy Law & Sustainability and Professorial Lecturer in Law at The George Washington University Law School.

Allan is a retired partner at Milbank LLP, where he was a member of the firm’s Global Project, Energy & Infrastructure Finance group and the Private Equity, Renewable Energy, Latin America, and Global Risk & National Security practices. A lawyer for over 30 years, he has handled complex transactions in the United States, Canada, Latin America, Asia, and Europe with an aggregate value of over $100 billion. Focused on energy and infrastructure project finance and development, his practice encompassed international and cross-border transactions, private equity, mergers & acquisitions, capital markets and private placements, joint ventures, restructurings, construction, banking, insurance and regulatory matters, and a range of commercial transactions.

He is a Senior Advisor at SidePorch and a contributor to Forbes. He speaks and publishes on geopolitics, sustainability, energy markets, infrastructure investment, cross-border transactions, climate change, and regulatory policy. He was a delegate to the COP27 UN Climate Change Conference, served as a USAID consultant in India, and was the founding co-chair of the State Bar of California's Subsection on Public-Private Infrastructure.

Allan earned a BA in International Studies from The Johns Hopkins University and a JD from the University of California, Berkeley School of Law and studied in Austria and Germany.