List of Subsidiaries of AEI
 Jurisdiction ofSubsidiary Name
    
    2009 Ownership Interest (%)(a)
    
    
    IncorporationAccroven SRL (Accroven)
    
    
    49.25
    
    
    BarbadosBeijing Macro Gas Link Co. Ltd (BMG)(b)
    
    
    70.00
    
    
    ChinaConsorcio Eólico Amayo S.A. (Amayo)
    
    
    13.42
    
    
    PanamaChilquinta Energia S.A. (Chilquinta)
    
    
    50.00
    
    
    ChileDHA Cogen Limited (DCL)
    
    
    60.23
    
    
    PakistanDistribuidora de Electricidad Del Sur, S.A. de C.V. (Delsur)
    
    
    86.41
    
    
    El SalvadorEmpresa Distribuidora de Energia Norte, S.A. (EDEN)(c)
    
    
    90.00
    
    
    ArgentinaElektra Noreste S.A. (Elektra)
    
    
    51.00
    
    
    PanamaElektro  Eletricidade e Serviços S.A. (Elektro)
    
    
    99.68
    
    
    BrazilElektrocieplownia Sp. z.o.o. (ENS)
    
    
    100.00
    
    
    PolandEmpresa Distribuidora Electrica Regional S.A. (EMDERSA)
    
    
    77.10
    
    
    ArgentinaEmgasud S.A. (Emgasud)
    
    
    42.73
    
    
    ArgentinaEmpresa Energetica Corinto Ltd. (Corinto)
    
    
    57.67
    
    
    Cayman IslandsEmpresa Electrica de Generacion de Chilca S.A. (Fenix)
    
    
    85.00
    
    
    PeruEPE  Empresa Produtora de Energia Ltda. (EPE)(d)
    
    
    100.00
    
    
    BrazilGas Natural Comprimido S.A. (Gazel)(e)
    
    
    24.40
    
    
    ColombiaGas Natural de Lima y Callao S.A. (Calidda)
    
    
    80.85
    
    
    PeruGasOcidente do Mato Grosso Ltda. (GOM)(d)
    
    
    100.00
    
    
    BrazilGasOriente Boliviano Ltda. (GOB)(d)
    
    
    100.00
    
    
    BoliviaGas Transboliviano S.A. (GTB)
    
    
    34.65
    
    
    BoliviaGeneradora San Felipe Limited Partnership (San Felipe)
    
    
    100.00
    
    
    Turks and Caicos IslandsJaguar Energy Guatemala LLC (Jaguar)
    
    
    100.00
    
    
    DelawareJamaica Private Power Corporation (JPPC)
    
    
    84.42
    
    
    JamaicaLuoyang Yuneng Sunshine Cogeneration Company Limited (Luoyang)
    
    
    50.00
    
    
    ChinaLuz del Sur S.A.A. (Luz del Sur)(f)
    
    
    37.97
    
    
    PeruOrganización Terpel Inversiones S.A. (Terpel)(e)
    
    
    24.40
    
    
    ColombiaPromigas S.A. E.S.P. (Promigas)
    
    
    52.13
    
    
    ColombiaPuerto Quetzal Power LLC (PQP)
    
    
    100.00
    
    
    DelawareTipitapa Power Company Ltd (Tipitapa)
    
    
    57.67
    
    
    Cayman IslandsTongda Energy Private Limited (Tongda)(b)
    
    
    100.00
    
    
    SingaporeTrakya Elektrik Uretim ve Ticaret A.S. (Trakya)
    
    
    90.00
    
    
    TurkeyTransborder Gas Services Ltd. (TBS)(d)
    
    
    100.00
    
    
    Cayman IslandsTransportadora Brasileira Gasoduto Bolivia-Brasil S.A. TBG (TBG)
    
    
    8.27
    
    
    Argentina
 
 (a)
    
    Represents AEIs net interest via direct and indirect ownerships.(b)
    
    Owned indirectly through Huatong (Shanghai) Investment Co., Ltd.(c)
    
    We acquired our 90.00% interest in EDEN in 2007. The transaction is subject to
local anti-trust approval.(d)
    
    These four companies comprise the integrated project Cuiabá.(e)
    
    Owned indirectly through Proenergía Internacional S.A.(f)
    
    In May 2008, we acquired an additional 0.03% of Luz del Sur in a public tender. We
currently own 37.97% of Luz del Sur. Our stake in Luz del Sur is owned indirectly through our
50.00% ownership of its holding company, Peruvian Opportunity Company SAC, or POC.