Exhibit 21 SUBSIDIARIES OF THE REGISTRANT: Buzzard Power Corporation Incorporated in Delaware December 12, 1990......................... Sunnyside Power Corporation Incorporated in Utah September 21, 1987............................ Kaiser Power of Sunnyside, Inc. Incorporated in Delaware March 26, 1986............................ Kaiser Systems, Inc. Incorporated in Delaware March 26, 1986............................ Milesburg Energy, Inc. Incorporated in Pennsylvania September 30, 1986.................... Coal Dynamics Corporation Incorporated in Pennsylvania March 21, 1986........................