0001181431-11-050454 4 1 20110921 20110926 20110926 CALPINE CORP 0000916457 4911 770212977 DE 1231 717 TEXAS AVENUE SUITE 1000 HOUSTON TX 77002 7138308775 717 TEXAS AVENUE SUITE 1000 HOUSTON TX 77002 Luminus Energy Partners Master Fund, Ltd. 0001405850 D0 4 34 001-12079 111107818 1700 BROADWAY, 35TH FLOOR NEW YORK NY 10019 (212) 615-3450 1700 BROADWAY, 35TH FLOOR NEW YORK NY 10019 4 1 rrd322642.xml LUMINUS ENERGY PARTNERS MASTER FUND - FORM 4 - 09/26/11