| Accelerated Innovations | 2017 |
| American Efficient | 2018 |
| Applied Energy Group | 2019 |
| APTIM | 2010 |
| Chicago Bungalow Association | 2018 |
| CLEAResult | 2013 |
| CMC Energy Services | 2018 |
| Columbia Water and Light | 2008 |
| D+R International | 2011 |
| DNV GL | 2005 |
| Duke Energy | 2006 |
| East Kentucky Power Cooperative | 2012 |
| Ecotagious | 2019 |
| Elevate Energy | 2017 |
| Energy Federation, Inc. (EFI) | 2007 |
| Energy Insight, Inc. | 2015 |
| Energy Solutions | 2017 |
| EnergyX Solutions Inc | 2019 |
| Enervee | 2014 |
| Erthe Energy Solutions | 2018 |
| Evergreen Consulting Group | 2018 |
| Franklin Energy | 2008 |
| Frontier Energy | 2017 |
| Future Energy Enterprises, LLC | 2009 |
| Honeywell Smart Grid Solutions | 2014 |
| ILLUME | 2018 |
| JadeTrack | 2019 |
| Leidos | 2010 |
| Lime Energy | 2012 |
| Lockheed Martin | 2009 |
| Michaels Energy | 2011 |
| Michigan Saves | 2018 |
| Milepost Consulting, SPC | 2019 |
| Missouri Botanical Garden's EarthWays Center | 2009 |
| Mitsubishi Electric Trane HVAC US LLC | 2010 |
| Morgan Marketing Partners | 2010 |
| NIPSCO | 2014 |
| Northwest Energy Efficiency Council (NEEC) | 2008 |
| NTC | 2014 |
| Power TakeOff, Inc. | 2017 |
| Resource Action Programs | 2012 |
| Resource Innovations | 2016 |
| Solutions for Energy Efficient Logistics, LLC (SEEL) | 2012 |
| Southern Minnesota Municipal Power Agency | 2004 |
| Staples Energy | 2008 |
| Summerhill | 2016 |
| VEIC | 2015 |
| Waypoint | 2017 |
| West Monroe Partners | 2014 |
| Xcel Energy | 2000 |
