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Calpine CEO and executives

Executive Summary. Based on our data team's research, John B. Hill III (Thad) is the Calpine's CEO. Calpine has 2,256 employees, of which 33 are in a leadership position.
Here are further demographic highlights of the leadership team:
  • The Calpine executive team is 24% female and 76% male.
  • 64% of the management team is White.
  • 12% of Calpine management is Hispanic or Latino.
  • 10% of the management team is Black or African American.
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Name & TitleBio
John B. Hill III (Thad)

President and Chief Executive Officer

Thad Hill became Calpine’s President and Chief Executive Officer and a member of its Board of Directors in May 2014. Mr. Hill joined the company in September 2008 as Executive Vice President and Chief Commercial Officer. He became Chief Operating Officer in November 2010 and was named President in December 2012. Prior to Calpine, Mr. Hill was with NRG Energy from 2006 to 2008, serving as President of NRG Texas in 2007- 2008. Prior to NRG, Mr. Hill was Executive Vice President of Strategy and Business Development at Texas Genco LP from 2005 to 2006. From 1995 to 2005, he was with Boston Consulting Group Inc., where he rose to Partner and Managing Director and led the North American energy practice, serving companies in the power and gas sector with a focus on commercial and strategic issues. Mr. Hill received his Bachelor of Arts degree from Vanderbilt University magna cum laude and a Master of Business Administration degree from the Amos Tuck School of Dartmouth College, where he was elected an Edward Tuck Scholar.

Peter Cartwright

Founder

Zamir Rauf

Executive Vice President and Chief Financial Officer

Zamir Rauf's LinkedIn

Andrew Novotny

Executive Vice President; Chief Operating Officer

Andrew Novotny's LinkedIn

Andrew Novotny is a Chief Operating Officer at CALPINE CORP and is based in Houston, Texas. He has worked as Senior Vice President Trading at CALPINE CORP.

Jeff Koshkin

Senior Vice President, Chief Accounting Officer and Chief Risk Officer

Jeff Koshkin's LinkedIn

Jeff Koshkin has served as Calpine’s Senior Vice President and Chief Accounting Officer since August 1, 2015.

Hether Benjamin Brown

SVP, Chief Administrative Officer

Hether Benjamin Brown's LinkedIn

Hether Benjamin Brown is a SVP, Chief Administrative Officer at CALPINE CORP and is based in Houston, Texas. She has worked as Senior VP:Human Resources at CALPINE CORP and VP:Supply Chain Services at CALPINE CORP. Hether works or has worked as Dir:Supply Chain Mgmt at MD Anderson Cancer Center Orlando. She studied at Texas Woman's University and University of Texas at Arlingt.

Kevin George McMahon

Senior Vice President, Internal Audit and Chief Compliance Officer

Kevin George McMahon's LinkedIn

Kevin McMahon is a Sr Vice President Internal Audit & Chief Compliance Officer at CALPINE CORP and is based in Houston, Texas. He has worked as Board Member at Flotek Industries Inc, Board Member at EPIC ENERGY RESOURCES INC, and Vice President Internal Audit at HCA Healthcare Inc. Kevin attended Palm Beach Atlantic University and Binghamton University.

Thad Miller

Executive Vice Chairman and Chief Legal Officer

Thad Miller's LinkedIn

W. Thaddeus Miller joined Calpine Corporation in August 2008 as Executive Vice President, Chief Legal Officer and Secretary. Mr. Miller brings almost 30 years of legal experience to Calpine, with more than 25 years having been in the energy industry. He recently served as Executive Vice President and Chief Legal Officer of Texas Genco Inc. until 2006. From 2002 to 2004, Mr. Miller was a consultant to Texas Pacific Group, a private equity firm. From 1998 to 2002, he served as Executive Vice President and Chief Legal Officer of Orion Power, an independent power producer. From 1994 to 1998, Mr. Miller was Vice President of Goldman Sachs & Co., where he focused on wholesale electric and other energy commodity trading. Before joining Goldman Sachs & Co., Mr. Miller was a partner in a New York law firm. Mr. Miller earned his Bachelor of Science degree from the United States Merchant Marine Academy and his Juris Doctorate from St. John's School of Law. In addition, he was an officer in the United States Coast Guard.

Charles M. Gates

Executive Vice President of Power Operations

Sarah G. Novosel

Senior Vice President

Sarah G. Novosel's LinkedIn

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Calpine founders

Name & TitleBio
Peter Cartwright

Founder

Calpine board members

Name & TitleBio
John B. Hill III (Thad)

President and Chief Executive Officer

Thad Hill became Calpine’s President and Chief Executive Officer and a member of its Board of Directors in May 2014. Mr. Hill joined the company in September 2008 as Executive Vice President and Chief Commercial Officer. He became Chief Operating Officer in November 2010 and was named President in December 2012. Prior to Calpine, Mr. Hill was with NRG Energy from 2006 to 2008, serving as President of NRG Texas in 2007- 2008. Prior to NRG, Mr. Hill was Executive Vice President of Strategy and Business Development at Texas Genco LP from 2005 to 2006. From 1995 to 2005, he was with Boston Consulting Group Inc., where he rose to Partner and Managing Director and led the North American energy practice, serving companies in the power and gas sector with a focus on commercial and strategic issues. Mr. Hill received his Bachelor of Arts degree from Vanderbilt University magna cum laude and a Master of Business Administration degree from the Amos Tuck School of Dartmouth College, where he was elected an Edward Tuck Scholar.

Thad Miller

Executive Vice Chairman and Chief Legal Officer

Thad Miller's LinkedIn

W. Thaddeus Miller joined Calpine Corporation in August 2008 as Executive Vice President, Chief Legal Officer and Secretary. Mr. Miller brings almost 30 years of legal experience to Calpine, with more than 25 years having been in the energy industry. He recently served as Executive Vice President and Chief Legal Officer of Texas Genco Inc. until 2006. From 2002 to 2004, Mr. Miller was a consultant to Texas Pacific Group, a private equity firm. From 1998 to 2002, he served as Executive Vice President and Chief Legal Officer of Orion Power, an independent power producer. From 1994 to 1998, Mr. Miller was Vice President of Goldman Sachs & Co., where he focused on wholesale electric and other energy commodity trading. Before joining Goldman Sachs & Co., Mr. Miller was a partner in a New York law firm. Mr. Miller earned his Bachelor of Science degree from the United States Merchant Marine Academy and his Juris Doctorate from St. John's School of Law. In addition, he was an officer in the United States Coast Guard.

W. Thaddeus Miller

Chief Legal Officer; Secretary; Vice Chairman, Executive Board

David C. Merritt

Board Member

Frank Cassidy

Board Member

Jack A. Fusco

Board Member

Michael Sullivan

President & CEO

Michael Sullivan's LinkedIn

Michael W. Hofmann

Board Member

Robert Mosbacher Jr.

Board Member

W. Benjamin Moreland

Board Member

Calpine leadership demographics

Calpine gender distribution in management team

  • The Calpine executive team is 24% female and 76% male.
  • Calpine is 29% female and 71% male company-wide.
Male
Male
76%
Company-wide: 71%
Female
Female
24%
Company-wide: 29%

Calpine executives by race

Management Team:
  • The most common ethnicity among Calpine executive officers is White.
  • 64% of the management team is White.
  • 12% of Calpine's management is Hispanic or Latino.
  • 10% of the management team is Black or African American.
Company-wide:
  • White is the most common ethnicity company-wide.
  • 53% of employees are White.
  • 21% of employees are Hispanic or Latino.
  • 12% of employees are Black or African American.
  • Management team
  • General
100%
80%
60%
40%
20%
0%
Unknown
White
Black or African American
Asian
Hispanic or Latino

Calpine jobs nearby

Calpine executives FAQs

Zippia gives an in-depth look into the details of Calpine, including salaries, political affiliations, employee data, and more, in order to inform job seekers about Calpine. The employee data is based on information from people who have self-reported their past or current employments at Calpine. The data on this page is also based on data sources collected from public and open data sources on the Internet and other locations, as well as proprietary data we licensed from other companies. Sources of data may include, but are not limited to, the BLS, company filings, estimates based on those filings, H1B filings, and other public and private datasets. While we have made attempts to ensure that the information displayed are correct, Zippia is not responsible for any errors or omissions or for the results obtained from the use of this information. None of the information on this page has been provided or approved by Calpine. The data presented on this page does not represent the view of Calpine and its employees or that of Zippia.

Calpine may also be known as or be related to CALPINE CORP, Calpine, Calpine Corp. and Calpine Corporation.