(Editor's note: Standard&Poor's earlier release saying that Calpine's ratings had been placed on CreditWatch negative following the announcement of a new credit facility was incorrect. No such transaction has occurred.) NEW YORK (Standard&Poor's) Feb. 25, 2002 – Standard&Poor's is maintaining its double-'B'-plus corporate credit rating with stable outlook on Calpine Corp., its double-'B'-plus rating on Calpine's existing senior unsecured debt, and its single-'B'-plus rating on the company's convertible preferred stock.