| Abbreviation | Definition |
|---|---|
| CERG | Collaborative Energy Research Group |
| CERN | Conservative Energy Recycling Network |
| CERO | Cooperative Energy Recycling and Organics |
| CERO | Cooperative Energy Recycling Organics |
| CERS | California Energy Resources Scheduling |
| CERT | Clean Energy Resource Team |
| CERT | Committee on Energy Research and Technology |
| CES | Clean Energy Standard |
| CES | Commercial Energy Specialists |
| CESA | California Energy Storage Alliance |
| CESA | California Energy Storage Association |
| CESA | Clean Energy States Alliance |
| CESAC | Center for Energy Systems and Control |
| CESAC | Clean Energy and Sustainability Analytics Center |
| CESARE | Caribbean Environmental Sciences And Renewable Energy |
| CESC | Control and Energy Systems Center |
| CESI | Caribbean Energy Security Initiative |
| CESI | Catalytica Energy Systems Inc |
| CESI | Catalytica Energy Systems Incorporated |
| CESL | Cardiff Energy Supply Limited |