Stephen W. Bergstrom was named president and chief operating officer of Dynegy Inc. Bergstrom formerly was president and COO of Dynegy Marketing and Trade and senior vice president of Dynegy Inc.
Texas-New Mexico Power Co. promoted Robert E. Castillo to vice president and regional customer officer for its Mountain Region. Castillo, formerly assistant vice president-New Mexico, replaces Allan Davis, who retired after 34 years with TNMP.
William W. Schivley was named president of Select Energy, Northeast Utilities System's marketing affiliate. He formerly was executive vice president and COO of CMS Energy Co.'s Marketing Services and Trading Co.
California ISO appointed Zora Lazic its new vice president of client services. Lazic previously was the associate general counsel at Powerex, a subsidiary of the British Columbia Hydro and Power Authority.
Harold "Hal" N. Kvisle was named senior vice president and president of energy operations at TransCanada Pipelines Ltd. Kvisle joins TransCanada from Fletcher Challenge Energy Canada, where he was president.
Utilicorp United appointed Dwayne L. Hart senior vice president and chief financial officer. Hart previously was vice president and controller of Enron Capital & Trade Resources Corp.
Columbia Propane Corp. named Martin A. Woods vice president of supply and Ronald R. Rominiecki CFO. Woods previously was vice president of supply and distribution at National Propane Partners L.P. and Rominiecki was NPP's president and COO.