The following is a diagram illustrating the simplified structure of Superior, Superior LP and their principal subsidiaries as of March 10, 2009.
|(1)||Superior Plus LP and Superior General Partner Inc. indirectly own 99.9% and 0.1%, respectively, of Superior Energy Management Gas LP and Superior Energy Management Electricity LP.|
|(2)||Superior Plus US Holdings Inc., a Delaware Corporation, has wholly-owned subsidiaries through which ERCO Worldwide and Winroc conduct operations in the United States.|
|(3)||A corporation incorporated pursuant to the laws of Chile.|
|(4)||Except where otherwise noted, all corporations are incorporated pursuant to the laws of Canada and all limited partnerships have been formed pursuant to the laws of Ontario.|