In creating a knowledge network, the Harvard Electricity Policy Group has engaged participants from industry, federal and state government, financial institutions, law firms, environmental and consumer advocacy groups, research shops, and academia. Participants in HEPG discussions have included:

ABB Analysis
American Electric Power
AES Corporation
Alberta Electric System Operator
American Transmission Company
Arizona Public Service Company
Bonneville Power Administration
British Columbia Transmission Corporation
California Independent System Operator
Calpine Corporation
Carolina Power and Light
Central and Southwest
Central Maine Power
Citizens Power
Constellation Energy Group, Inc.
DC Energy
Duke Energy
EBSCO Industries
Edison Electric Institute
Edison Mission Energy
Electric Reliability Council of Texas
Energy East
Entergy Services, Inc.
EPSA (Electric Power Supply Association)
FirstEnergy Corporation
GDF Suez
GE Energy
GenOn Energy
Georgia Transmission
Goldman Sachs
Independent System Operator New England
ITC Holdings
Kaiser Aluminum & Chemical
Macquarie Energy
Merrill Lynch
Midcontinent Independent System Operator
Mirant Corporation
Morgan Stanley
National Gas Clearinghouse
National Grid USA
National Independent Energy Producers
National Rural Electric Cooperative Association
New York Independent System Operator
New York State Electric and Gas
Niagara Mohawk
Northeast Utilities
Orange and Rockland Utilities
Oxbow Power
Pacific Gas and Electric
PJM Interconnection
Public Service Enterprise Group
Sempra Energy/San Diego Gas & Electric
Sithe Energies
Southern California Edison
Southern Company
Tennessee Valley Authority
Trans-Elect/Michigan Electric Transmission Company
TransEnergie US, Ltd.
Tucson Electric Power
TXU Corporation
UNS Energy Corporation
US Department of Energy
Viridity Energy
Wisconsin Electric
Wisconsin Public Power
Wisconsin Energy Corporation
Xcel Energy

Other participants have come from:
Acre International
Alabama Public Service Committee
Alberta Utilities Commission
American Antitrust Institute
American Enterprise Institute
American Public Power Association
American Superconductor
American Wind Energy Association
Analysis Group
ANEEL, Brazil
Apache Corporation
Arizona Corporation Commission
Arkansas Electric Cooperative Corporation
Arkansas Public Service Commission
Armour, Goodin, Schlotz & MacBride
Asia-Pacific Energy Forum
Atlantic Energy Partners
Austin Energy
Australian Competition and Consumer Commission
Baker & Miller
Barker, Dunn & Rossi
Bates White
Borlick Associates
Boston Edison
Boston University
Brandeis University
The Brattle Group
Brown Rudnick
Bruder, Gentile & Marcoux
Burson Marsteller
California Energy Commission
California Public Utilities Commission
California State Senate
Calpine Corporation
Cambridge Energy Research Associates
Cambridge University
Cameron & McKenna
Catholic University of Louvin
CATO Institute
Center for the Advancement of Energy Markets
Central Hudson
Centrica PLC
Christensen Associates
Clarkson University
CME Group
Colorado Office of Consumer Counsel
Colorado Public Utilities Commission
Columbia University
Comillas Pontifical University
Commodities Futures Trading Commission
Con Edison
Connecticut Department of Public Utility Control
Conservation Law Foundation
CNT Energy
CPS Energy
Cornell University Institute of Public Affairs
Couch, White, Brenner
CRA International
DCT Energia, Brazil
Delaware Public Service Commission
Deloitte Consulting
Dickstein, Shapiro & Morin
District of Columbia Public Service Commission
Dow Chemical
Duke Energy
Economics Resource Group
Electric Generating Association
Electricity Journal
Electric Power Research Institute
Electric Power Supply Association
Enel North America
Enel S.p.A.
Energy 5.0
Energy Resource Economics
Energy Probe
ENTE Nacional Regulador del Gas
Environmental Defense Fund
Environmental Law and Policy Center of the Midwest
Equitable Resources, Inc.
ERCOT ( Texas )
Energy Security Analysis, Inc.
ESPY Energy Solutions
Executive Branch of Arizona
Federal Energy Regulatory Commission
Financial Accounting Standards Board
First Circuit Court of Appeals
Foley Hoag
GE Energy Financial Services
George Washington University School of Law
Georgia Public Service Commission
GridAmerica, LLC
Hale & Dorr
Hansen, McQuat, Hamrin & Rohde
Harvard University
Hogan & Hartson
House Committee on Energy and Commerce
Howrey & Simon
Hunton & Williams
ICF International
Idaho Power
Idaho Public Utilities Commission
Illinois Attorney General
Illinois Commerce Commission
IMO Ontario
Independent Energy Producers Association
Indiana Utility Regulatory Commission
Instituto de Investigacion Tecnologica
Intercontinental Energy Corporation
InterGen Services, Inc.
Iowa Utilities Board
Italian Energy Authority
J. Makowski Associates
Johns Hopkins University
Jones, Day, Reavis & Pogue
Kentucky Public Service Commission
Kidder Peabody
Landrum & Brown
Latham & Watkins
Law Offices of Scott Hempling
Lawrence Livermore National Laboratory
LeBoeuf, Lamb, Greene & MacRae, LLP
Lehman Brothers
Liipfert, Bernhard
London Economics International, LLC
Long Island Lighting Company
Louisville Gas & Electric
LS Power Development
Maine Public Utilities Commission
Maryland Office of People's Council
Maryland Public Service Commission
Martorelli e GouveiaAdvogados
Massachusetts Department of Public Utilities
Massachusetts Division of Energy Resources
Massachusetts Institute of Technology
McKinsey and Company
McNees, Wallace & Nurick
Merrill International
Merrill Lynch
Michigan Electric Transmission Company, LLC
Michigan Public Service Commission
Mississippi Public Service Commission
Monitoring Analytics
Montana Public Service Commission
Murphy Witan
Nashville Electric Service
National Commission of Energy Policy
National Conference of State Legislators
National Consumer Law Center
National Economic Research Associates
National Electric Power Authority
National Energy Board
National Governors Association
National Regulatory Research Institute
Natural Resources Defense Council
National Association of Regulatory Utility Commissioners
National Energy Board
National Independent Energy Producers
National Regulatory Research Institute
Natural Gas Clearinghouse
Natural Resources Defense Council
Neptune Energy
NERA Economic Consulting
New Energy Ventures
New England Power Generators Association
New Harbor, Inc.
New Hampshire Public Utilities Commission
New Jersey Board of Public Utilities
NGC Corporation
New York Power Authority
New York Public Service Commission
New York State Energy Office
New York State Public Service Commission
New Zealand Electricity Commission
NextEra Energy Resources
Ni Source
North American Electric Reliability Council
North Carolina Public Utilities Commission
The NorthBridge Group
Norwegian Water Resources and Energy Administration
The National Regulatory Research Institute
Nuclear Regulatory Commission
Oak Ridge National Laboratories
Oklahoma Gas and Electric
Office for Electricity Regulation (UK)
Oliver, Oliver & Waltz
Ontario IMO
Orange and Rockland
Oregon Public Utility Commission
Otter Tail Power Company
Pacific Gas & Electric
Pacific Telesis
Paul Dragoumis Associates
PECO Energy
Pennsylvania Commonwealth Court
ennsylvania House of Representatives
Pennsylvania Office of Consumer Advocate
Pennsylvania Public Utility Commission
Pontificia Universidad Catolica de Chile
Potomac Economics
Potomac Electric Power Company
Progress and Freedom Foundation
PSEG Energy Resources & Trade
PSI Energy
Public Service Commission of New Mexico
Public Utility Commission of Texas
Public Utility Research Center, University of Florida
Public Utilities Commission of Ohio
Public Utility Commission of Texas
Putnam, Hayes & Bartlett
Quarles & Brady
Regulatory Assistance Project
Regulatory Entity for Electric Sector (Portugal)
Reid & Priest
Rensselaer Polytechnic Institute
Resources for the Future
Rhode Island Public Utilities Commission
Ridley & Associates
RTO West Project Team
Sacramento Municipal Utility District
Schwab Capital Markets LP
Senate Committee on Energy and Natural Resources
Seventh Circuit Court of Appeals
Skadden, Arps, Slate, Meagher & Flom, LLP
Solar Alliance
South Dakota Public Utilities Commission
Southern California Edison
Spiegel & McDiarmid
Stanford University
State of Oklahoma
Steptoe & Johnson
Stoel Rives
Strategic Performance Management
Strategy Integration
Suffolk University
Sullivan & Cromwell
SunPower Corporation
Svanda Consulting
Synapse Energy Economics
Texas Ratepayers' Organization to Save Energy
Texas State Senate
TransEnergie US Ltd
TransGrid Australia
TRANSLink Development Company
Transpower New Zealand, Ltd.
Troutman & Sanders
UNC Global Institute for Energy and Environmental Systems
Union of Concerned Scientists
University of Arizona
University of California at Los Angeles
University of California Energy Institute
University of Florida Public Utility Research Center
University of Hull Business School (UK)
University of Manchester Institute of Science and Technology (UK)
University of Maryland
University of Sussex (UK)
University of Texas at Austin
University of Wisconsin
US Department of Energy
US Department of Justice Antitrust Division
US Environmental Protection Agency
US Power Generating Company LLC
Utah Public Service Commission
Utility Consumers' Action Network
The Utility Reform Network
Utilities Telecom Council
Van Ness Feldman
Vermont Public Service Board
Washington State Energy Facility Site Evaluation Council
Washington Utilities and Transportation Commission
Winston & Strawn
Wisconsin Public Service Commission
The World Bank
World Resources Institute