| Agentis Energy | 2011 |
| AIQUEOUS | 2020 |
| Ameren Illinois | 2010 |
| American Efficient | 2018 |
| Applied Energy Group | 2019 |
| Bidgely | 2018 |
| Calico Energy | 2020 |
| Cedar Falls Utilities | 2011 |
| City Utilities of Springfield, MO | 2015 |
| Columbia Water and Light | 2008 |
| DTE | 2009 |
| Duke Energy | 2006 |
| East Kentucky Power Cooperative | 2012 |
| Emerson Commercial & Residential Solutions | 2019 |
| Energy Insight, Inc. | 2015 |
| Energy Solutions | 2017 |
| Enervee | 2014 |
| Evergreen Consulting Group | 2018 |
| Frontier Energy | 2017 |
| Honeywell Smart Grid Solutions | 2014 |
| Illinois EPA | 2017 |
| Indiana Office of Energy Development | 2014 |
| Iowa Economic Development Authority | 2014 |
| JadeTrack | 2019 |
| Leidos | 2010 |
| Lime Energy | 2012 |
| Louisville Gas & Electric Company and Kentucky Utilities (LGE KU) | 2012 |
| Michigan Department of Environment, Great Lakes, and Energy | 2006 |
| MidAmerican Energy Company | 2006 |
| Minnesota Department of Commerce | 2000 |
| Missouri Department of Natural Resources – Division of Energy | 2000 |
| Nebraska Energy Office | 2014 |
| Nest | 2015 |
| Nexant, Inc. | 2010 |
| Office of Energy Policy, Division of Energy Assistance for the Kentucky Energy and Environment Cabinet | 2014 |
| Oracle Utilities | 2010 |
| Performance Systems Development (PSD) | 2018 |
| Power TakeOff, Inc. | 2017 |
| South Dakota Bureau of Administration , Energy Management Office | 2014 |
| Southern Minnesota Municipal Power Agency | 2004 |
| TRC | 2009 |
| Uplight | 2019 |
| Upper Peninsula Power Company | 2019 |
| We Energies | 2019 |
| West Virginia Office of Energy | 2017 |
| Wisconsin Office of Energy Innovation | 2014 |
| Wisconsin Public Service | 2019 |
| Xcel Energy | 2000 |
