EXHIBIT 23.3

                              [NSA II LETTERHEAD]


                CONSENT OF NETHERLAND, SEWELL & ASSOCIATES, INC.


We hereby consent to the incorporation by reference on Form 10-K of Calpine
Corporation (the "Company") and to the references to this firm for the Company's
estimated domestic proved reserves contained on Form 10-K for the year ended
December 31, 2003.


                                        NETHERLAND, SEWELL & ASSOCIATES, INC.

                                        Very truly yours,

                                        /s/ J. Carter Henson, Jr.
                                        -------------------------
                                        J. Carter Henson, Jr.
                                        Senior Vice President

Houston, Texas
March 11, 2004




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