Press Release

Calpine Commences $155 Million Preferred Shares Offering and $100 Million Senior Term Loan Refinancing for Its Metcalf Energy Center

SAN JOSE, Calif., May 10 /PRNewswire-FirstCall/ Calpine Corporation's (NYSE: CPN) indirect subsidiary, Metcalf Energy Center, LLC (Metcalf LLC), intends to commence a $155 million offering of 5.5-Year Redeemable Preferred Shares. Concurrent with the issuance of the Preferred Shares, Metcalf LLC will refinance, through a five-year, $100 Million Senior Term Loan, an existing $100 million non-recourse construction credit facility. Metcalf LLC owns Calpine's 602-megawatt Metcalf Energy Center in San Jose, Calif.

The proceeds from the offering of the Redeemable Preferred Shares will ultimately be used as permitted by Calpine's existing bond indentures. Proceeds from the offering of the Senior Term Loan will be used to refinance all outstanding indebtedness under the existing construction credit facility, to complete construction of the Metcalf power plant, to pay fees and expenses related to the transaction, and as permitted by Calpine's existing bond indentures.

The Redeemable Preferred Shares have not been registered under the Securities Act of 1933, and may not be offered in the United States absent registration or an applicable exemption from registration requirements. The Redeemable Preferred Shares will be offered in a private placement in the United States under Regulation D under the Securities Act of 1933 and outside of the United States pursuant to Regulation S under the Securities Act of 1933. This press release shall not constitute an offer to sell or the solicitation of an offer to buy. Securities laws applicable to private placements limit the extent of information that can be provided at this time.

SOURCE  Calpine Corporation
    -0-                             05/10/2005
    /CONTACT:  media, Katherine Potter, ext. 1168, or investors, Karen Bunton,
ext. 1121, both of Calpine Corporation, +1-408-995-5115/
    /Web site:  http://www.calpine.com/
    (CPN)

CO:  Calpine Corporation; Metcalf Energy Center, LLC
ST:  California
IN:  OIL UTI ENV
SU:  OFR

UC-ND
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8662 05/10/2005 13:54 EDT http://www.prnewswire.com