Exhibit 10.21(b)


Guaranty Agreement (Dickerson L2) between Southern Energy, Inc. and Dickerson
OL2 LLC dated as of December 19, 2000

Guaranty Agreement (Dickerson L3) between Southern Energy, Inc. and Dickerson
OL3 LLC dated as of December 19, 2000

Guaranty Agreement (Dickerson L4) between Southern Energy, Inc. and Dickerson
OL4 LLC dated as of December 19, 2000