0000916457-13-000030 S-8 7 333-149074 333-167028 20130524 20130524 20130524 CALPINE CORP 0000916457 4911 770212977 DE 1231 S-8 33 333-188863 13872690 717 TEXAS AVENUE SUITE 1000 HOUSTON TX 77002 7138302000 717 TEXAS AVENUE SUITE 1000 HOUSTON TX 77002 S-8 1 s-8may10shareincreaseautho.htm S-8 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 (DATED MAY 24, 2013) EX-5.1 2 cpn_s-8xexhibit51x5242013.htm EXHIBIT 5.1 OPINION OF WHITE & CASE LLP, COUNSEL TO THE REGISTRANT EX-23.1 3 cpn_s-8xexhibit231x5242013.htm EXHIBIT 23.1 CONSENT OF PRICEWATERHOUSECOOPERS LLP GRAPHIC 4 calpinelogoa02a02.gif GRAPHIC 5 wcfooter.jpg GRAPHIC 6 wcheader.jpg GRAPHIC 7 wcheaderpage2.jpg