Executive Bio
W.G. (Trey) Griggs III has served as Executive Vice President and President, Calpine Retail of Calpine Corporation (???Calpine???) since February 2017, after serving as its Executive Vice President and Chief Commercial Officer from June 2015 to February 2017. Before joining Calpine, Mr. Griggs was a Managing Director at Goldman Sachs & Co. (???Goldman Sachs???), leading its North American Energy Risk Management Franchise activities and its Houston Trading Office beginning in 2011. Prior to that, he served in various roles with Goldman Sachs??? commodities group in New York. From 1995-2000, he was an attorney at law firms in Houston and Greenville, S.C. Mr. Griggs holds an MBA from the Wharton School of the University of Pennsylvania, a Juris Doctorate from University of Houston School of Law, and a Bachelor of Arts degree from Vanderbilt University.