| A-TEC Energy | 2011 |
| Agentis Energy | 2011 |
| AIQUEOUS | 2020 |
| American Efficient | 2018 |
| Applied Energy Group | 2019 |
| APTIM | 2010 |
| ARCA, Inc. | 2007 |
| Bidgely | 2018 |
| BITS Limited | 2020 |
| Blue Line Innovations | 2018 |
| Bradford White Corporation | 2019 |
| BrightLine Group | 2019 |
| Cadmus | 2004 |
| Calico Energy | 2020 |
| Cascade Energy | 2017 |
| Celia Johnson Consulting | 2018 |
| Center for Energy and Environment | 2004 |
| Chicago Bungalow Association | 2018 |
| CLEAResult | 2013 |
| CMC Energy Services | 2018 |
| Cooperative Educational Service Agency 10 (CESA 10) | 2016 |
| Daikin North America LLC | 2019 |
| DNV GL | 2005 |
| E Source | 2010 |
| Edison Foundation Institute for Electric Innovation | 2009 |
| Elevate Energy | 2017 |
| Embertec USA, LLC | 2016 |
| Emerson Commercial & Residential Solutions | 2019 |
| EMI Consulting | 2015 |
| Energy Education Council | 2007 |
| Energy Federation, Inc. (EFI) | 2007 |
| Energy Insight, Inc. | 2015 |
| Energy Management Solutions, Inc. | 2019 |
| Energy Sciences | 2020 |
| Energy Solutions | 2017 |
| Enervee | 2014 |
| ERS | 2016 |
| Erthe Energy Solutions | 2018 |
| Evergreen Consulting Group | 2018 |
| Franklin Energy | 2008 |
| Frontier Energy | 2017 |
| Fujitsu General America, Inc. | 2014 |
| Future Energy Enterprises, LLC | 2009 |
| GDS Associates | 2009 |
| Geothermal Alliance of Illinois | 2011 |
| Geothermal Exchange Organization (GEO) | 2014 |
| Green Home Experts | 2014 |
| Greenlite | 2019 |
| Group O, Inc. | 2018 |
| Guidehouse | 2003 |
| Honeywell Smart Grid Solutions | 2014 |
| ICF | 2000 |
| ILLUME | 2018 |
| Itron, Inc. | 2009 |
| JadeTrack | 2019 |
| Leidos | 2010 |
| Lennox Industries | 2018 |
| Lime Energy | 2012 |
| MaxLite | 2018 |
| Michaels Energy | 2011 |
| Michigan Saves | 2018 |
| Missouri Botanical Garden's EarthWays Center | 2009 |
| Missouri Energy Initiative | 2014 |
| Mitsubishi Electric Trane HVAC US LLC | 2010 |
| Morgan Marketing Partners | 2010 |
| Mountain Association | 2016 |
| National Energy Foundation | 2015 |
| Nest | 2015 |
| Nexant, Inc. | 2010 |
| NMR Group, Inc. | 2018 |
| Northwest Energy Efficiency Council (NEEC) | 2008 |
| NTC | 2014 |
| Opinion Dynamics | 2008 |
| Oracle Utilities | 2010 |
| Owens Corning | 2020 |
| Panasonic, HVAC Division | 2019 |
| Pearl Certification | 2018 |
| Performance Systems Development (PSD) | 2018 |
| Philips Lighting | 2012 |
| Polyisocyanurate Insulation Manufacturers Association | 2020 |
| Power TakeOff, Inc. | 2017 |
| Powerley | 2018 |
| Resource Action Programs | 2012 |
| Resource Innovations | 2016 |
| Rheem Manufacturing | 2019 |
| Slipstream | 2019 |
| Sodexo | 2017 |
| Solutions for Energy Efficient Logistics, LLC (SEEL) | 2012 |
| Staples Energy | 2008 |
| Technical Consumer Products, Inc. | 2005 |
| The National Energy Improvement Fund (NEIF) | 2015 |
| Threshold | 2017 |
| Trane Technologies | 2017 |
| TRC | 2009 |
| Uplight | 2019 |
| Utilivate Technologies, LLC | 2020 |
| VEIC | 2015 |
| Verdatek Solutions LLC | 2020 |
| Walker-Miller Energy Services | 2019 |
| Waypoint | 2017 |
| West Monroe Partners | 2014 |
| Willdan | 2001 |
