Appendix A Bulk Power Investigation: Entities Interviewed Entity California Independent System Operator California Investor-Owned Utilities ù Southern California Edison Company ù San Diego Gas & Electric Company ù Pacific Gas & Electric Company California Power Exchange California Public Utilities Commission California and WSCC Generators and Marketers ù Calpine Corporation ù Constellation Power Source, Inc. ù Duke Energy North America, LLC ù Dynegy Power Corp. ù Enron Power Marketing, Inc. ù NRG Energy, Inc ù PG&E National Energy Group ù Reliant Energy Power Generation, Inc. ù Southern Company Energy Marketing L.P. ù Thermo Ecotek Corporation ù Williams Energy Marketing & Trading Company Electric Power Supply Association Expert Economists ù James Bushnell ù William Hogan ù Richard Tabors ù Frank Wolak National Rural Electric Cooperative Association Northern California Power Agency Office of the California Attorney General Sacramento Municipal Utility District The Utility Reform Network (TURN): Eric Woychik