2010 Pennsylvania Code
Title 66 - PUBLIC UTILITIES
Chapter 3 - Public Utility Commission
309 - Oaths and subpoenas.

     § 309.  Oaths and subpoenas.
        The commission, or its representative, shall have the power,
     in any part of this Commonwealth, to subpoena witnesses, to
     administer oaths, to examine witnesses, or to take such
     testimony, or compel the production of such books, records,
     papers, and documents as it may deem necessary or proper in, and
     pertinent to, any proceeding, investigation, or hearing, held or
     had by it, and to do all necessary and proper things and acts in
     the lawful exercise of its powers or the performance of its
     duties. The fees for serving a subpoena shall be the same as
     those paid sheriffs for similar services.