Derrick P. Williamson

Derrick Williamson

Adjunct Professor of Law

Spilman Thomas & Battle
1100 Bent Creek Blvd., Suite 101
Mechanicsburg, PA 17050
Phone: 717-254-9499

About Williamson

Derrick Price Williamson is member in charge of the Greater Harrisburg office of Spilman Thomas & Battle. He also serves as co-chair of the firm’s Utility, Energy, and Communications Law Group. 

Mr. Williamson’s primary areas of practice are energy and public utility law, with a focus on representing large end-users of electricity. He represents clients before state public service/utility commissions and appellate courts, and he has substantial experience in legislative development, implementation, and regulation associated with electric industry restructuring and competition in Pennsylvania and West Virginia.  Mr. Williamson has appeared in over a dozen jurisdictions on a Pro Hac Vice basis and has been recognized by his peers in Pennsylvania as one of The Best Lawyers in America® in the Energy Law field, having also twice been named “Lawyer of the Year” in Harrisburg for Energy Law.  He is a frequent lecturer and presenter on energy and power rate regulation issues.

A veteran of the United States Army, Mr. Williamson serves as a member of the Pennsylvania Bar Association’s Military & Veterans’ Affairs Committee.  He also is active with respect to diversity initiatives in the legal field and has for many years been a member of the Dauphin County Bar Association’s Equal Professional Opportunity Committee.

Mr. Williamson graduated summa cum laude and Phi Beta Kappa from the University of Maryland with a focus on Government & Politics. He received his Juris Doctorate degree from Duke University School of Law where he served as research editor of the Duke Environmental Law & Policy Forum.