Jeff Koshkin — Chief Accounting Officer and Senior Vice President at Calpine Corporation

Mr. Jeff Koshkin has been the Chief Accounting Officer and Senior Vice President of Calpine Corporation since August 1, 2015. Mr. Koshkin served as a Vice President and Controller of Calpine Corp. until August 1, 2015. Mr. Koshkin joined Calpine in 2008 and has served in a number of leadership roles including Controller for Commercial and Derivative Accounting and Controller for Corporate and Plant Accounting, as well as in interim roles heading Financial Planning and Analysis and as Chief Risk Officer. He was a Senior Manager in the Regulatory and Capital Markets practice for Deloitte and Touche, LLP. He is a Certified Public Accountant and a member of the American Institute of Certified Public Accountants and the Texas Society of Certified Public Accountants. Mr. Koshkin holds a Master's degree in Professional Accounting from the University of Texas at Austin.