NEW YORK (Standard&Poor's) May 9, 2005--Standard&Poor's Ratings Services will hold a telephone conference call on Monday, May 9, 2005, at 2:00 p.m. Eastern Daylight Time to discuss today's rating downgrade on Calpine Corporation. Credit analyst Jeff Wolinsky from the Standard&Poor's Corporate Utilities, Energy&Project Finance ratings team will be the speaker for the call. At the conclusion of his remarks, he will be available to answer questions. Please note that Standard&Poor's offers all of its broadcast teleconference calls to all interested participants on a complimentary basis. The call will begin promptly at the time indicated. Please call at least 20 minutes before the scheduled start of the call to complete the