CMS Energy Corp.'s energy marketing unit, CMS Marketing, Services and Trading, hired David B. Geyer as v.p., risk management. Geyer's responsibilities include hedging, arbitrage and trading. CMS Generation Co.'s contract with Thailand's AMATA-EGCO Power Ltd., prompted the promotion of W. David Carni from operations superintendent to operations and maintenance plant manager.
Walter J. Gilbert, Volunteer Energy Corp. v.p., will head the company's newly opened office. Gilbert's added duties include special projects relating to gas acquisition, gas purchasing and marketing.