Exhibit 31.1CERTIFICATIONS              I, Peter Cartwright, certify that:1. I have reviewed this quarterly report on Form 10-Q of Calpine Generating Company, LLC, CalGenExpansion Company, LLC, Baytown Energy Center, LP, Calpine Baytown Energy Center GP, LLC,Calpine Baytown Energy Center LP, LLC, Baytown Power GP, LLC, Baytown Power, LP, CarvilleEnergy LLC, Channel Energy Center, LP, Calpine Channel Energy Center GP, LLC, Calpine ChannelEnergy Center LP, LLC, Channel Power GP, LLC, Channel Power, LP, Columbia Energy LLC, CorpusChristi Cogeneration LP, Nueces Bay Energy LLC, Calpine Northbrook Southcoast Investors, LLC,Calpine Corpus Christi Energy GP, LLC, Calpine Corpus Christi Energy, LP, Decatur EnergyCenter, LLC, Delta Energy Center, LLC, CalGen Project Equipment Finance Company Two, LLC,Freestone Power Generation LP, Calpine Freestone, LLC, CPN Freestone, LLC, Calpine FreestoneEnergy GP, LLC, Calpine Freestone Energy, LP, Calpine Power Equipment LP, Los Medanos EnergyCenter, LLC, CalGen Project Equipment Finance Company One, LLC, Morgan Energy Center, LLC,Pastoria Energy Facility L.L.C., Calpine Pastoria Holdings, LLC, Calpine Oneta Power, L.P. ,Calpine Oneta Power I, LLC, Calpine Oneta Power II, LLC, Zion Energy LLC, CalGen ProjectEquipment Finance Company Three LLC, CalGen Equipment Finance Holdings, LLC and CalGenEquipment Finance Company, LLC (the “registrants”); 2. Based on my knowledge, this report does not contain any untrue statement of a material factor omit to state a material fact necessary to make the statements made, in light of thecircumstances under which such statements were made, not misleading with respect to the periodcovered by this report; 3. Based on my knowledge, the financial statements, and other financial information included inthis report, fairly present in all material respects the financial condition, results ofoperations and cash flows of the registrants as of, and for, the periods presented in thisreport; 4. The registrants’ other certifying officer and I are responsible for establishing andmaintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and15d-15(e)) for the registrants and have: a. Designed such disclosure controls and procedures, or caused such disclosure controls andprocedures to be designed under our supervision, to ensure that material informationrelating to the registrants, including its consolidated subsidiaries, is made known to us byothers within those entities, particularly during the period in which this report is beingprepared;  b. Evaluated the effectiveness of the registrants’ disclosure controls and procedures andpresented in this report our conclusions about the effectiveness of the disclosure controlsand procedures, as of the end of the period covered by this report based on such evaluation;and  c. Disclosed in this report any change in the registrants’ internal control over financialreporting that occurred during the registrants’ most recent fiscal quarter that hasmaterially affected, or is reasonably likely to materially affect, the registrants’ internalcontrol over financial reporting; and5. The registrants’ other certifying officer and I have disclosed, based on our most recentevaluation of internal control over financial reporting, to the registrants’ auditors and theaudit committee of the registrants’ board of directors (or persons performing the equivalentfunctions): a. All significant deficiencies and material weaknesses in the design or operation ofinternal control over financial reporting which are reasonably likely to adversely affectthe registrants’ ability to record, process, summarize and report financial information; and  b. Any fraud, whether or not material, that involves management or other employees who havea significant role in the registrants’ internal control over financial reporting.Date: August 15, 2005   */s/ Peter Cartwright*     Peter Cartwright  *Chief Executive Officer and President*  *Calpine Generating Company, LLC*