Private Sector
- AdEase
- American Forest Foundation
- Brookfield Zoo, Chicago, IL
- Build it Green
- California Center for Sustainable Energy
- CB Richard Ellis (CBRE)
- Crosby Communications
- Electric Power Research Institute
- I Love a Clean San Diego
- Katz & Associates
- Keep America Beautiful
- Maritime Aquarium at Norwalk
- McKenzie Mohr & Associates
- Ogilvy Public Relations Worldwide
- Operation Fuel
- Urban Sustainability Directors Network
- Vermont Energy Investment Corporation
(Efficiency Vermont) - Waste Management
- Wildlife Conservation Society (Bronx Zoo)