Exhibit 21 The seven registrants, Entergy Corporation, System Energy Resources, Inc., Arkansas Power & Light Company, Gulf States Utilities Company, Louisiana Power & Light Company, Mississippi Power & Light Company and New Orleans Public Service Inc., and their active subsidiaries, are listed below: State or Other Jurisdiction of Incorporation Entergy Corporation Delaware System Energy Resources, Inc. (a) Arkansas Arkansas Power & Light Company (a) Arkansas The Arklahoma Corporation (b) Arkansas Gulf States Utilities Company (a) Texas Varibus Corporation (c) Texas GSG&T, Inc. (c) Texas Southern Gulf Railway Company (c) Texas Prudential Oil & Gas, Inc.(c) Texas Louisiana Power & Light Company (a) Louisiana Mississippi Power & Light Company (a) Mississippi New Orleans Public Service Inc. (a) Louisiana System Fuels, Inc.(d) Louisiana Entergy Services, Inc. (a) Delaware Entergy Power, Inc. (a) Delaware Entergy Operations, Inc. (a) Delaware Entergy Enterprises, Inc. (a) Louisiana Entergy S.A. (a) Argentina Entergy Argentina S.A. (a) Argentina Entergy Argentina S.A. Ltd. (a) Cayman Islands Entergy Transener S.A. (a) Argentina Entergy Power Development Corporation (a) Delaware Entergy Richmond Power Corporation (e) Delaware Entergy Systems and Service, Inc. (f) Delaware Entergy Pakistan LTD (e) Delaware Entergy Power Asia LTD (e) Cayman Islands Entergy Power Development International Corporation (a) Delaware Entergy Power Holding I, LTD (e) Cayman Islands EP Edgel, Inc. (e) Delaware Entergy Power CBA Holding II LTD (g) Bermuda Generandes, Co (h) Cayman Islands Edgel S.A. (i) Delaware EPG Cayman, Holding I (j) Cayman Islands EPG Cayman, Holding II (j) Cayman Islands Entergy Victoria LDC (k) Cayman Islands Entergy Power Holding LDC (l) Cayman Islands CitiPower Trust (m) Australia CitiPower Ltd. (n) Australia Entergy Power Edesur Holding LTD (o) Bermuda Entergy Power Marketing Corporation (a) Delaware _______________________ (a)Entergy Corporation owns all of the Common Stock of System Energy Resources, Inc., Arkansas Power & Light Company, Gulf States Utilities Company, Louisiana Power & Light Company, Mississippi Power & Light Company, New Orleans Public Service Inc., Entergy Services, Inc., Entergy Power, Inc., Entergy Operations, Inc., Entergy Enterprises, Inc., Entergy, S.A., Entergy Argentina, S.A., Entergy Transener, S.A., Entergy Argentina S.A., Ltd., Entergy Power Development Corporation, Entergy Power Development Corporation International, Entergy Power Marketing Corporation, and Entergy System and Services, Inc. (b)Arkansas Power & Light Company owns 34% of the Common Stock of The Arklahoma Corporation. (c)Gulf States Utilities Company owns all of the Common Stock of Varibus Corporation, GSG&T, Inc., Southern Gulf Railway Company, and Prudential Oil & Gas, Inc. (d)The capital stock of System Fuels, Inc. is owned in proportions of 35%, 33%, 19% and 13% by Arkansas Power & Light Company, Louisiana Power & Light Company, Mississippi Power & Light Company and New Orleans Public Service Inc., respectively. (e)Entergy Power Development Corporation owns all of the Common Stock of Entergy Richmond Power Corporation, Entergy Pakistan LTD, Entergy Power Asia LTD, Entergy Power Holding I, LTD, and EPG Edegel, Inc. (f)Entergy Enterprises, Inc. owns all of the Common Stock of Entergy Systems and Service, Inc. (g)Entergy Power Holding I, LTD owns all of the Common Stock of Entergy Power CBA Holding II LTD. (h)E P Edegel, Inc. owns all of the Common Stock of Generandes, Co. (i)Generandes, Co. owns all of the Common Stock of Edegel S.A. (j)Entergy Power Development International Corporation owns all of the Common Stock of EPG Cayman Holding I and EPG Cayman Holding II. (k)EPG Cayman Holding II and EPG Cayman Holding I own 99% and 1%, respectively, of the Common Stock of Entergy Victoria LDC. (l)EPG Cayman Holding II and Entergy Victoria LDC own 99% and 1%., respectively, of the Common Stock of Entergy Victoria Holding LDC. (m)Entergy Victoria LDC and Entergy Victoria Holding LDC own 99% and 1%, respectively, of the Common Stock of CitiPower Trust. (n)Entergy Victoria LDC and Entergy Victoria Holding LDC own 99% and 1%, respectively, of the Common Stock of CitiPower Ltd. (o)Entergy Argentina SA and Entergy Argentina S.A. Ltd. own all of the Common Stock of Entergy Power Edesur Holding LTD.