Calpine Corp - Company Profile
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The following section provides information on Calpine Corp’s senior management, executives, CEO and key decision makers and their roles in the organization. For more insight into Calpine Corp's management and employees, unlock the full data with our company analytics monitoring tool.
Executives
Thad Hill
Chairman Executive BoardMr. Thad Hill has been the Chairman of the company since October 2024. Prior to this, he served as the Chief Executive Officer and Director of the company since 2014; President in 2012; Chief Operating Officer of the company from 2010 to 2012; and Executive Vice President and Chief Operating Officer of the company. Mr. Hill served as the President of NRG Energy from 2006 to 2008, EVP of Strategy and Business Development at Texas Genco from 2005 to 2006, and Vice President and Director of Boston Consulting Group Inc from 1995 to 2005.
Andrew Novotny
Director; President; Chief Executive Officer Executive BoardMr. Andrew Novotny has been the Chief Executive Officer, President, and Director of the company since October 2024. Prior to this, he served as the Vice President of Power Trading for the company; Executive Vice President of Commercial Operations of the company; and Chief Operating Officer of the company. Mr. Novotny has also served as Vice President of Financial Gas and Power Trading for the BG Group and Vice President at Duke Energy.
Zamir Rauf
Chief Financial Officer; Executive Vice President Senior ManagementMr. Zamir Rauf has been the Chief Financial Officer and Executive Vice President of the company since December 2008. Prior to this, he also served as the interim Chief Financial Officer and Treasurer from June 2008 to December 2008; and Senior Vice President of Finance and Treasurer. Mr. Rauf also held various accounting and finance roles with Enron North America, Dynegy Inc and Comerica Bank.
Jeff Koshkin
Chief Accounting Officer; Senior Vice President Senior ManagementMr. Jeff Koshkin has been the Senior Vice President and Chief Accounting Officer since August 2018. Prior to this, he served as the Controller of Commercial Operations; Controller of Corporate and Plant Accounting, and interim roles heading Financial Planning and Analysis and Chief Risk Officer from 2008 to 2015. Mr. Koshkin served as the Senior Manager in the Regulatory and Capital Markets practice for Deloitte and Touche.
Rosemary Antonopoulos
Chief Administrative Officer; Senior Vice President Senior ManagementMs. Rosemary Antonopoulos has been the Chief Administrative Officer and Senior Vice President of the company since March 2025. Prior to this, she oversees the company’s Corporate Communications, Cyber Security, Facilities, Human Resources, Physical Security and Administrative CCS Project Management organizations. Ms. Antonopoulos served as the Vice President and Deputy General Counsel for Calpine’s West region.
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