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William H.
Of Counsel


Bill Penniman concentrates his practice on energy, including energy-related administrative and appellate law. He counsels clients on a variety of regulatory matters and, when necessary, represents them in administrative and judicial proceedings. Bill provides transactional advice to clients looking to secure business-critical contracts for natural gas and electricity supplies and related services. A member of Eversheds Sutherland (US)'s Energy Practice Group, Bill advises natural gas pipeline owners on complex federal pipeline regulations, as well as large consumers and marketers of natural gas and electricity.

Bill has participated in numerous proceedings before the Federal Energy Regulatory Commission (FERC) and federal courts that impact open-access transmission, pipeline certificates, natural gas and electric rates and tariffs, imports, environmental compliance, enforcement matters and a variety of other issues. He has also published law review articles on energy regulation and transactions and has frequently spoken on energy issues at conferences sponsored by bar associations, public organizations, trade groups, and private organizations. Bill recently co-authored with Professor Alfred C. Aman a book for law students concerning the practice of administrative law: Skills & Values: Administrative Law (published by LexisNexis 2012).

Professional Activities

Vice Chair, Natural Gas Committee, Public Utilities Law Section, American Bar Association (1996-2005)
Board of Governors, Reston Community Center, Fairfax County, Virginia (2005-present)
Board of Directors, Energy Bar Association (1995-2001)
Board of Directors, Foundation of the Energy Law Journal (1997-2001)
Board of Directors, Center for the Advancement of Energy Markets (2000-2005)
Co-instructor, Energy Deregulation Seminar, Indiana University Law School (2004)

  • J.D., Georgetown University Law Center, Editor, Georgetown Law Journal
  • M.A., George Mason University
  • B.A., Allegheny College
Bar Admissions
  • District of Columbia
  • Maryland
Honorable C. Stanley Blair, U.S. District Court - Maryland.

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Eversheds Sutherland is an international law firm helping the Fortune 100, industry leaders, sector innovators and business entrepreneurs solve their biggest challenges and reach their business goals. Dedicated to unfaltering excellence in client service, we are known for our business savvy and industry intelligence, providing creative and custom solutions for each of our clients. Industry and business experience makes the difference for our clients.

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