Exhibit 21-4



EXELON GENERATION COMPANY, LLC SUBSIDIARY LISTING



|                                                                                                                                                                |  |            |  |                          
|--------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ---------- |  | -------------------------
|Affiliates                                                                                                                                                      |  | Trade Name |  | Jurisdiction or Formation
|AmerGen Consolidation, LLC (includes 3 un-named subsidiaries all of which hold decommissioning related investments)                                             |  |            |  | Nevada                   
|                                                                                                                                                                |  |           
|AmerGen Energy Company, LLC                                                                                                                                     |  |            |  | Delaware                 
|                                                                                                                                                                |  |           
|Exelon Energy Company (includes 2 un-named subsidiaries which provide retail energy and gas delivery services)                                                  |  |            |  | Delaware                 
|                                                                                                                                                                |  |           
|Exelon Generation Company, LLC (includes 16 un-named subsidiaries which provide power generation or related support services)                                   |  |            |  | Pennsylvania             
|                                                                                                                                                                |  |           
|Exelon Generation Consolidation, LLC (includes 16 un-named subsidiaries all of which hold decommissioning related investments)                                  |  |            |  | Nevada                   
|                                                                                                                                                                |  |           
|Exelon Generation Finance Company, LLC                                                                                                                          |  |            |  | Delaware                 
|                                                                                                                                                                |  |           
|Exelon New England Holdings, LLC (includes 11 un-named subsidiaries, all of which operate fossil fuel generating stations or provide related
support functions) |  |            |  | Delaware                 
|                                                                                                                                                                |  |           
|Exelon SHC, Inc. (includes 11 un-named subsidiaries, all of which operate and hold investments in fossil fuel generating
stations)                              |  |            |  | Delaware                 
|                                                                                                                                                                |  |           
|PECO Energy Power Company (include 2 un-named subsidiaries, all of which operate fossil fuel generating stations or provide related support
functions)          |  |            |  | Pennsylvania             
|                                                                                                                                                                |  |           
|Southeast Chicago Energy Project, LLC                                                                                                                           |  |            |  | Delaware                 
|                                                                                                                                                                |  |           
|Susquehanna Electric Company                                                                                                                                    |  |            |  | Maryland