Derrick Price Williamson
Co-Chair, Utility, Energy & Communications Law Group | Member in Charge of Harrisburg Office
Harrisburg, PA
office 717.795.2741
mobile 717.254.9499
  • Overview
  • Services
  • Distinctions
  • Admissions
  • Memberships
  • Publications & Presentations
  • Community Involvement
  • Resources

Mr. Williamson's primary areas of practice are public utility and energy law. He is Co-Chair of the firm's Utility, Energy & Communications Law Group.


  • University of Maryland, B.A., summa cum laude, Phi Beta Kappa
  • Duke University School of Law, J.D., Research Editor, Duke Environmental Law & Policy Forum


  • Representing clients before state public service/utility commissions and appellate courts
  • Counseling manufacturing, institutional, and industrial clients regarding the procurement of energy services, including the analysis and negotiation of natural gas and electricity supply contracts
  • Substantial experience in legislative development, implementation, and regulation associated with electric industry restructuring and telecommunications competition in Pennsylvania and West Virginia
  • Counsel for over 20 years to the West Virginia Energy Users Group, a state-wide group of large industrial and manufacturing interests that collectively consume 4 billion kWh of electricity annually in West Virginia
  • Litigating electric and natural gas rate cases and merger cases
  • Representing end-users with respect to energy efficiency, demand-response, and on-site generation issues
  • Adjunct Professor, Duquesne University School of Leadership and Professional Advancement, 2006 - 2014
  • Veteran, United States Army
Energy Law Environmental Law Litigation Shale Gas Law Utility Law West Virginia Energy Users Group


  • Recognized by The Best Lawyers in America as "Lawyer of the Year" 2016 in Harrisburg, Pa. for Energy Law
  • Nominated by peers for inclusion in The Best Lawyers in America® in the area of Energy Law


  • Pennsylvania
  • United States Court of Appeals, District of Columbia Circuit
  • United States District Court for the Middle District of Pennsylvania


  • American Bar Association, Public Utility, Communications and Transportation Law Section
  • Pennsylvania Bar Association, past Chair, Public Utility Law Section
  • Dauphin County Bar Association, Equal Professional Opportunity Committee

Publications & Presentations

Community Involvement

  • Board Member and Past President, Cumberland Valley Eagle Foundation, 2004 - 2016
  • Head Coach and Board Member, HMMS Youth Soccer Association, 1997 - 2016
Currents - Energy Industry Insights: Week of October 29, 2017 Currents - Energy Industry Insights: Week of September 10, 2017 62 Spilman Attorneys Recognized by Best Lawyers 2017 18 W.Va.-based Spilman Attorneys Recognized by Super Lawyers SCOTUS Stays the Implementation of the Clean Power Plan 6 Spilman Attorneys Recognized as “Lawyers of the Year” 2016  57 Spilman Attorneys Recognized by Best Lawyers 2016 56 Spilman Attorneys Recognized by Best Lawyers 2015 55 Spilman Attorneys Recognized by Best Lawyers 2014  Spilman Attorneys Recognized by The Best Lawyers in America 2013