UtiliCorp United Inc. Ralph Green died in 1962 and his son Richard Green took the helm. Richard Green, Jr. took over in 1982. The latest Green looked to expand it beyond its Missouri base and it was renamed UtiliCorp United Inc. in 1985. It bought People's Natural Gas, Northern Minnesota Utilities, West Virginia Power, West Kootenay Power and Light in British Columbia, and Michigan Gas Utilities. In 1989 it assigned its unregulated gas operations to a newly created subsidiary, Aquila Energy Corp. The acquisitions were done by issuing stock and reducing Green family control. In 1991, Centel sold its electric utility holdings in Kansas and Colorado to UtiliCorp for $345 million which operated under the name WestPlains Energy. Before then, Centel in Colorado was known as Southern Colorado Power Company which was later changed to Centel Electric-Southern Colorado Power Division. Centel in Kansas was previously Western Power and Gas which was changed to Centel Electric-Western Power Division. In 1992 the company entered into a joint venture to distribute and market natural gas in the United Kingdom. From 1995 to 2000 it bought interest in utilities in New Zealand and Australia. In some markets Utilicorp placed electric and phone bills on the same bill. West Virginia Power was sold to Allegheny Energy in 1999, becoming part of its Monongahela Power subsidiary. Aquila, Inc. In 2001 UtiliCorp spun off Aquila but then bought it back in 2002 and then renamed the entire corporation Aquila, Inc. Aquila's stock price peaked at $37.55 in May 2001 and it ranked #33 on the Fortune 500. The stock plummeted to $6.75 in July 2002 in the wake of the Enron scandal which had called into question business practices of all electric utilities. In 2004 five lawsuits were filed in federal court alleging that Aquila's board of directors steered employees into heavily investing their retirement savings in company stock. On Jan. 26, 2005, these suits were folded into a single class action alleging top company officials violated the federal Employee Retirement Income Security Act requiring that employers manage employees retirement programs responsibly. The company settled the case for $10.5 million in April 2007. 66,000 of the company's customers in Missouri lost power for several days in the Mid-December 2007 North American Winter storms. The company began selling its assets and dropped to 891 on the Fortune list in 2007. In 2007 its electric assets in northwest Missouri