0000215457-17-003191 SC 13G/A 1 20170608 20170608 CALPINE CORP 0000916457 4911 770212977 DE 1231 SC 13G/A 34 005-48317 17899509 717 TEXAS AVENUE SUITE 1000 HOUSTON TX 77002 7138302000 717 TEXAS AVENUE SUITE 1000 HOUSTON TX 77002 BlackRock Inc. 0001364742 6211 320174431 DE 1231 SC 13G/A 55 EAST 52ND STREET NEW YORK NY 10055 212-810-5300 55 EAST 52ND STREET NEW YORK NY 10055 BlackRock, Inc. 20060929 New BlackRock, Inc. 20060601 SC 13G/A 1 calpine.corp.txt