GECX 2005
| Demonstrator. |
ES44AC
| 53681 | 2 | 17943 |
GECX 2010
| Hybrid Prototype Demonstrator. |
ES44AC-H
| 53681 | 16 | 80698 |
GECX 2011
| Demonstrator. |
ES44DC
| 53877 | 2 | 58136 |
GECX 4400
| Demonstrator. |
AC44CW
| 48878 | 4 | 58133 |
GECX 6000
| Demonstrator. |
AC60CW
| 48879 | 2 | 58106 |
GECX 6001
| Demonstrator. |
AC60CW
| 48878 | 2 | 13558 |
GECX 6002
| Demonstrator, ex UP, donated to Lake Shore Railway Museum. |
AC60CW
| 50945 | 2 | 54693 |