| Abbreviation | Definition |
|---|---|
| CEWP | Clean Energy and Water Project |
| CEWP | Clean Energy Works Portland |
| CEWR | Commission for Energy and Water Regulation |
| CEWS | Center for Energy Water Sustainability |
| CEYA | Cap Energy Youth Activator |
| CF | Capacity Factor |
| CFCAE | Coalition for Clean Affordable Energy (Santa Fe, NM) |
| CFES | Center for Future Energy Systems |
| CFEW | Climate Food Energy and Water |
| CFMMEU | Construction Forestry Maritime Mining and Energy Union |
| CFMMEU | Construction Foresty Maritime Mining and Energy Union |
| CFRER | Centre for Renewable Energy Resources |
| CFSE | Crystal Field Stabilization Energy |
| CGEA | Canadian Geothermal Energy Association |
| CGEP | Center on Global Energy Policy |
| CGF | Canada Growth Fund |
| CHANGE | Camden Homeless Action Network Generating Energy |
| CHEC | Compact High Energy Camera |
| CHEEP | Consortium for Higher Education Energy Purchasing |
| CHEER | Creating Hope Energy Enthusiasm And Recreation |