NEW YORK, Jan. 21 /PRNewswire-FirstCall/ -- NRG Energy Inc. (NYSE: NRG) will replace Sun Microsystems Inc. (Nasdaq: JAVA) in the S&P 500 after the close of trading on a date to be announced. Sun Microsystems is being acquired by S&P 100 & 500 constituent Oracle Corp. (Nasdaq: ORCL) in a cash deal expected to be completed soon, pending final approvals.

Standard & Poor's will monitor this transaction, and post any relevant updates on its website: www.standardandpoors.com.

NRG Energy is a wholesale power generation company. Headquartered in Princeton, NJ, the company will be added to the S&P 500 GICS (Global Industry Classification Standard) Independent Power Producers & Energy Traders Sub-Industry index.

Following is a summary of the change: 




                                S&P 500 INDEX  -  TBA
                                ---------------------

               COMPANY     GICS ECONOMIC SECTOR      GICS SUB-INDUSTRY
             ------------- --------------------   ---------------------------
                                                  Independent Power Producers
    ADDED    NRG Energy         Utilities               & Energy Traders
    -------  ------------- --------------------   ---------------------------
                 Sun
    DELETED  Microsystems  Information Technology    Computer Hardware
    -------  ------------- ---------------------- ---------------------------

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