Exhibit 10.5(b)

Facility Site Lease Agreement (Dickerson L2) between Southern Energy Mid-
Atlantic, LLC, Dickerson OL2 LLC and Southern Energy MD Ash Management, LLC
dated as of December 19, 2000

Facility Site Lease Agreement (Dickerson L3) between Southern Energy Mid-
Atlantic, LLC, Dickerson OL3 LLC and Southern Energy MD Ash Management, LLC
dated as of December 19, 2000

Facility Site Lease Agreement (Dickerson L4) between Southern Energy Mid-
Atlantic, LLC, Dickerson OL4 LLC and Southern Energy MD Ash Management, LLC
dated as of December 19, 2000