UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934

Date of Report (Date of earliest event reported):  February 11, 2009

CALPINE CORPORATION

(Exact name of registrant as specified in its charter)

Delaware	1-12079	77-0212977
(State or other jurisdiction of incorporation)	(Commission File Number)	(IRS Employer Identification No.)

717 Texas Avenue, Houston, Texas  77002

50 West San Fernando Street, San Jose, California  95113

 (Addresses of principal executive offices and zip codes)

Registrant’s telephone number, including area code:  (713) 830-8775

Not applicable

(Former name or former address if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

o Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

o Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

o Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

TABLE OF CONTENTS

ITEM 5.02 — DEPARTURE OF DIRECTORS OR CERTAIN OFFICERS; ELECTION OF DIRECTORS; APPOINTMENT OF CERTAIN OFFICERS; COMPENSATORY ARRANGEMENTS OF CERTAIN OFFICERS

SIGNATURES

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ITEM 5.02 — DEPARTURE OF DIRECTORS OR CERTAIN OFFICERS; ELECTION OF DIRECTORS; APPOINTMENT OF CERTAIN OFFICERS; COMPENSATORY ARRANGEMENTS OF CERTAIN OFFICERS.

On February 11, 2009, the Board of Directors (the “Board”) of Calpine Corporation (the “Company”) appointed Robert A. Mosbacher, Jr. as a member of the Board, filling the vacancy created by the retirement of Kenneth Derr from the Board in 2008.

Mr. Mosbacher, 57, was appointed by President George W. Bush in 2005 as the President and Chief Executive Officer of Overseas Private Investment Corporation, an independent U.S. government agency that helps small, medium and large American businesses expand into developing nations and emerging markets around the globe; he served in that position through January 2009. From 1986 until 2005, he served as President and Chief Executive Officer of Mosbacher Energy Company. From 1995 to 2003, Mr. Mosbacher also served as Vice Chairman of Mosbacher Power Group LLC, a global developer, owner, and operator of electric power generation plants. Mr. Mosbacher obtained a bachelor of arts in Political Science from Georgetown University in 1973 and a Juris Doctorate from Southern Methodist University.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

CALPINE CORPORATION

	By:	/s/  Zamir Rauf
		Zamir Rauf
		Executive Vice President and
		Chief Financial Officer
Date:  February 18, 2009

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