<DOCUMENT>
<TYPE>EX-21
<SEQUENCE>15
<FILENAME>ex21.txt
<DESCRIPTION>EXHIBIT 21
<TEXT>

<Page>

                                                                      EXHIBIT 21

                  PUBLIC SERVICE ENTERPRISE GROUP INCORPORATED
                            SIGNIFICANT SUBSIDIARIES

<TABLE>
<CAPTION>
                                                                      State of
Name                                                 Ownership %   Incorporation
----                                                 -----------   -------------
<S>                                                      <C>         <C>
Public Service Electric and Gas Company...........       100         New Jersey
PSEG Power LLC....................................       100          Delaware
PSEG Fossil LLC...................................       100          Delaware
PSEG Energy Resources & Trade LLC.................       100          Delaware
PSEG Energy Holdings LLC..........................       100         New Jersey
PSEG Resources LLC................................       100         New Jersey
PSEG Global LLC...................................       100         New Jersey
PSEG Global International Holdings LLC............       100          Delaware
</TABLE>

     The remaining subsidiaries of Public Service Enterprise Group Incorporated
are not significant subsidiaries as defined in Regulation S-X.


</TEXT>
</DOCUMENT>