| Company | Location |
|---|---|
| Energy Conversion Devices Inc. | Rochester Hills, Michigan, United States |
| EnerNOC | Boston, Massachusetts, United States |
| EnerTech Capital Partners | Wayne, Pennsylvania, United States |
| engeneOS Inc. | Waltham, Massachusetts, United States |
| Engent Inc. | Norcross, Georgia, United States |
| Engineering Exec Search | San Diego, California, United States |
| Engis Corp. | Wheeling, Illinois, United States |
| Enhanced Biofuels | Houston, Texas, United States |
| EnOcean GmbH | Oberhaching, Germany |
| Environmental-Professional.com | Spring, Texas, United States |
