Calpine, an operator and developer of power generation facilities, has appointed Thaddeus Miller as its new executive vice president, chief legal officer and secretary.

Mr Miller succeeds Gregory Doody, who has served as Calpine’s executive vice president, general counsel and secretary since July 2006. Mr Miller recently served as executive vice president and chief legal officer of Texas Genco until 2006.

Jack Fusco, CEO of Calpine, said: I am pleased to welcome Thad to our organization. We have worked together for many years. Thad is an extremely talented executive, who brings a wealth of legal and energy experience to our company.