• ABB, Inc
  • AECI- Associated Electric Cooperative Inc.
  • AES Dominicana
  • Alliant Energy
  • Alstom Power
  • Ameren Power Company
  • American Electric Power (AEP)
  • American Electrical Testing Company
  • Arizona Public Service (APS)
  • AZZ/Calvert
  • Basin Electric Power Cooperative
  • Bechtel
  • Broin & Associates
  • Brookfield Renewables
  • Brown Electric
  • Broin & Associates
  • Burns & McDonnell
  • Calpine
  • CB&I/Shaw Group
  • Consumers Energy
  • CPS Energy
  • CV Engineering
  • Dahlen, Berg & Co
  • Dale C. Rossman
  • Dakota Electric
  • Dakota Gasification Co
  • Delta Star
  • Department of Energy
  • Detroit Edison
  • DH Blattner
  • Dominion Generation
  • Duke Energy
  • Dynegy
  • East Central Energy
  • East Kentucky Power Corp
  • ECA (Electrical Corp. of America)
  • Eaton Corporation
  • Electric Reliability Services
  • Emerson Process Management
  • Energis High Voltage Resources
  • Energy-Northwest
  • Entergy
  • EPRI
  • Ethos Energy
  • Exelon
  • Faribault Energy Park
  • Florida Power & Light (FPL)
  • FLUOR
  • Forest City Light and Power
  • Forte Power Systems, Inc
  • Foster Wheeler
  • Fountain Valley Power
  • FPD Power Development
  • GE Canada
  • GE Energy
  • GenOn Energy
  • GE Wind Energy
  • Great River Energy (GRE)
  • Hampton Tedder
  • HDR Engineering
  • HiCoAmerica
  • Holland Energy Center
  • Hooper Corporation
  • Hubbell Power Systems
  • Imperial Oil, Canada
  • Invenergy
  • Kaeding & Associates
  • Kansas City Power and Light
  • Kiewit Inc
  • E. Myers Company
  • LG Constructors
  • Lockwood Greene
  • Luminant
  • A. Mortenson
  • MEI Electrical
  • MidAmerican Energy
  • Midwest Generation
  • Minnesota Power
  • Minnkota Power Cooperative
  • J. Electrical, Inc.
  • MN Municipal Power Agency
  • MN Valley Electric
  • Moorhead Public Utilities
  • Muscatine Power and Water
  • Naylor Electric
  • Nebraska Public Power District (NPPD)
  • New Athens Generating Company
  • New Prague Utilities
  • New York Power Authority (NYPA)
  • NextEra Energy
  • NIMISHA International
  • NRG Energy
  • NV Energy
  • Omaha Public Power District (OPPD)
  • Ottertail Power
  • Pacific Power Management
  • PacifiCorp
  • Parsons Electric
  • Payne Crest Electric
  • Pennsylvania Power and Light (PPL)
  • Phillips 66 Company
  • Powell/Delta Unibus
  • Power System Development
  • Progress Energy
  • Public Service Electric & Gas (PSE&G)
  • W. Beck, Inc.
  • Rochester Public Utilities
  • Sandow Power Company
  • Sargent & Lundy
  • Sempra Energy
  • SGL Carbon Group
  • Shakopee Public Utilities
  • Siemens
  • Southwest Generation
  • Spencer Municipal Utilities
  • Stanley Group
  • Sunflower Electric Power
  • Tampa Electric Co. (TECO)
  • Technibus
  • Tennessee Valley Authority (TVA)
  • Texas Genco
  • Three-C Electrical
  • TIC
  • Trigen Syracuse Energy Corp
  • TXU Energy
  • Ulteig Engineers
  • United Service Group
  • Utilities Plus Energy Services
  • US Bureau of Reclamation
  • Utility Engineering
  • Valencia Power
  • Valmont/Newmark
  • Van Ert Electric
  • Washington Group International
  • Watertown Municipal Utility
  • Waukesha Electric
  • WE Energies
  • Wunderlich-Malec
  • Xcel Energy