Skip to main content
Jay Duffy
CATF Expert

Jay Duffy

Litigation Director


Jay Duffy joined CATF in the fall of 2013. His work focuses on reducing greenhouse gas pollution at power plants and other stationary sources through environmental regulations utilizing his Clean Air Act and administrative law expertise. Jay was recognized by the Environmental Law Institute as an “emerging leader” in 2020.

Prior to joining CATF Jay worked at the Clean Air Council in Philadelphia, Pennsylvania, where he focused on permitting oversight for natural gas facilities, power plants and refineries. He now represents the Council and many other non-profits in Clean Air Act appellate litigation.

Jay holds a J.D. from Villanova Law School where he was associate editor of the Villanova Environmental Law Journal and a member of the Delaware Valley Environmental Inn of Court. He also held internships with U.S. EPA Region 3 and PennFuture during his time at Villanova. Jay graduated from the New York City Environmental Law and Leadership Institute in 2011.