| Abbreviation | Definition |
|---|---|
| CCEE | Caspian Center for Energy and Environment |
| CCEG | Central Corridor Energy Group |
| CCEI | Catalysis Center for Energy Innovation |
| CCEI | Critical Clean Energy Interconnection |
| CCEM | Competence Center Energy and Mobility |
| CCER | Center for Computational Energy Research |
| CCES | Central Coast Energy Services |
| CCFDS | Carbon Contracts For Differences |
| CCFE | Culham Centre for Fusion Energy |
| CCSE | California Center for Sustainable Energy |
| CCUS | Carbon Capture, Utilisation, and Storage |
| CCUS | Carbon Capture, Utilization, and Storage |
| CCWE | Craven County Wood Energy |
| CDDE | CAIRS Direct Data Entry |
| CDEP | Cooperative Development Energy Program |
| CDEP | Cooperative Developmental Energy Program |
| CE | Combustion Energy |
| CEA | Certified Energy Auditor |
| CEA | Consumer Energy Alliance |
| CEA | Consumer Energy Alliance's |