Calpine to Announce First Quarter 2011 Results on April 29, 2011

Calpine Corporation (NYSE:CPN) announced today that it plans to release first quarter 2011 financial results on Friday, April 29, 2011, before the opening of the New York Stock Exchange. Management will present the results during an investor call scheduled for 9:00 a.m. Eastern Time/8:00 a.m. Central Time on April 29.

A listen-only webcast of the call may be accessed through the Company’s website at www.calpine.com or by dialing 800-967-7187 at least ten minutes prior to the beginning of the call. An archived recording of the call will be made available on the website and can also be accessed by dialing 888-203-1112 or 719-457-0820 (International) and providing confirmation code 8085815.

About Calpine

Founded in 1984, Calpine Corporation is a major U.S. power company, currently capable of delivering approximately 28,000 megawatts of clean, cost-effective, reliable and fuel-efficient power from its 92 operating plants to customers and communities in 20 U.S. states and Canada. Calpine Corporation is committed to helping meet the needs of an economy that demands more and cleaner sources of electricity. Calpine owns, leases and operates primarily low-carbon, natural gas-fired and renewable geothermal power plants. Using advanced technologies, Calpine generates power in a reliable and environmentally responsible manner for the customers and communities it serves. Please visit our website at www.calpine.com for more information.

Forward-Looking Information

In addition to historical information, this release contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Words such as "believe,” "intend,” "expect,” "anticipate,” "plan,” "may,” "will” and similar expressions identify forward-looking statements. Such statements include, among others, those concerning expected financial performance and strategic and operational plans, as well as assumptions, expectations, predictions, intentions or beliefs about future events. You are cautioned that any such forward-looking statements are not guarantees of future performance and that a number of risks and uncertainties could cause actual results to differ materially from those anticipated in the forward-looking statements. Please see the risks identified in this release or in Calpine’s reports and registration statements filed with the Securities and Exchange Commission, including, without limitation, the risk factors identified in its Annual Report on Form 10-K for the year ended Dec. 31, 2010. These filings are available by visiting the Securities and Exchange Commission’s website at www.sec.gov or Calpine’s website at www.calpine.com. Actual results or developments may differ materially from the expectations expressed or implied in the forward-looking statements, and Calpine undertakes no obligation to update any such statements.