SAN FRANCISCO (Standard&Poor's) June 7, 2011--Standard&Poor's Ratings Services said today that it assigned its 'B+' rating to Calpine Corp.'s proposed $360 million senior secured term loan credit facility due 2018. The loan was assigned a recovery rating of '2', indicating our expectation for substantial (70% to 90%) recovery of principal in the event of a payment default. At this recovery level, issue ratings are one notch above an issuer's corporate credit rating. The proceeds will be used to refinance project finance debt at Deer Park Energy Center LLC and Metcalf Energy Center LLC. Debt at these subsidiaries is currently not rated but is consolidated into Calpine's finances as part of Calpine's 'B' corporate credit rating. Deer