0000916457-13-000006 10-K 22 20121231 20130213 20130212 CALPINE CORP 0000916457 4911 770212977 DE 1231 10-K 34 001-12079 13599349 717 TEXAS AVENUE SUITE 1000 HOUSTON TX 77002 7138302000 717 TEXAS AVENUE SUITE 1000 HOUSTON TX 77002 10-K 1 cpn_10kx12312012.htm 10-K EX-4.24 2 cpn_exhibit424x12312012.htm FOURTH SUPP INDENTURE DATED NOV 26, 2012 FOR ISSUANCE OF 7.25% SSN DUE 2017 EX-4.25 3 cpn_exhibit425x12312012.htm FOURTH SUPP INDENTURE DATED NOV 26, 2012 FOR ISSUANCE OF 8.0% SSN DUE 2019 EX-4.26 4 cpn_exhibit426x12312012.htm FOURTH SUPP INDENTURE DATED NOV 26, 2012 FOR ISSUANCE OF 7.875% SSN DUE 2020 EX-4.27 5 cpn_exhibit427x12312012.htm FOURTH SUPP INDENTURE DATED NOV 26, 2012 FOR ISSUANCE OF 7.50% SSN DUE 2021 EX-4.28 6 cpn_exhibit428x12312012.htm FOURTH SUPP INDENTURE DATED NOV 26, 2012 FOR ISSUANCE OF 7.875% SSN DUE 2023 EX-21.1 7 cpn_exhibit211x12312012.htm SUBSIDIARIES OF THE COMPANY EX-23.1 8 cpn_exhibit231x12312012.htm CONSENT OF PRICEWATERHOUSECOOPERS EX-31.1 9 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