Exhibit 4.4(b)

Pass Through Trust Agreement B between Southern Energy Mid-Atlantic, LLC and
State Street Bank and Trust Company of Connecticut, National Association, as
Pass Through Trustee dated as of December 19, 2000

Pass Through Trust Agreement C between Southern Energy Mid-Atlantic, LLC and
State Street Bank and Trust Company of Connecticut, National Association, as
Pass Through Trustee dated as of December 19, 2000