Consulting Firms
- Bradford Brook Associates
- CDM Smith
- Conservation Services Group
- Eastern Research Group
- EC/R Incorporated
- Galligan Energy Consulting, Inc.
- Hayet Power Systems Consulting
- Jonathan Raab & Associates
- Larkin & Associates
- M. J. Bradley & Associates
- Marbek
- Perrin Quarles Associates
- Resource Insight, Inc.
- Sargent & Lundy Engineers, Ltd.
- Stratus Consulting
- Tellus Institute
Law Firms
- Burke, Williams and Sorensen, LLP
- Cheney, Brock, and Saudek, P.C.
- McGillivray Westerberg & Bender LLC
- Mullett & Associates
- Super Law Group, LLC
- Whitt Law LLC
Other
- Comverge
- Daikin U.S. Corporation
- Development Partners
- Dow Corning
- EnerNOC
- enXco
- Innovative Energy Systems
- Metropolitan Atlanta Rapid Transit Authority
- New York Independent System Operator
- PJM Interconnection
- PowerOptions, Inc.
- REMI
- Renewable Energy Systems
- RES America Developments, Inc.
- Yuasa, Inc.
Utilities
- BC Hydro
- Keyspan
- National Grid
- New Brunswick Power Company
- NSTAR
- PPM Energy
- Regroupement National des Conseils Regionaux de L'Environment du Quebec
- Southern California Edison
- TGC (The Gas Company - Hawaii)
- Tokyo Gas
- Unión Fenosa