Yvonne Hennessey

Barclay Damon LLP

Yvonne E. Hennessey is a partner at Barclay Damon, LLP where she practices energy and environmental law and serves as Chair of the Firm’s Environmental Practice Area as well as Co-Leader of the Firm’s Oil and Gas Team.  Yvonne provides counsel to a diverse array of energy clients, including electric power generators, electric transmission as well as interstate and intrastate natural gas pipelines.  Her breadth of experience includes project permitting and siting, administrative adjudication, civil and administrative enforcement, and government relations.

Yvonne has also represented clients in every aspect of complex environmental and energy litigation in a broad range of matters in both state and federal court.  Her experience includes actions under the Comprehensive Environmental Response, Compensation and Liability Act (CERCLA), Article 78 proceedings related to project permitting and siting, and preemption issues under both the Federal Power Act and Natural Gas Act.

Yvonne is the Second Vice Chair of the New York State Bar Association Environmental Law Section and is Past-President of the Northern District of New York Federal Court Bar Association.  She has been named to the Best Lawyers in America for Environmental Litigation and selected by Peer Review for Inclusion in Super Lawyer Directory for Energy and Natural Resources.