Exhibit 4.10(b)

Indenture of Trust, Mortgage and Security Agreement (Morgantown L2) between
Morgantown OL2 LLC, as Owner Lessor, and State Street Bank and Trust Company of
Connecticut, National Association, as Lease Indenture Trustee, dated as of
December 19, 2000

Indenture of Trust, Mortgage and Security Agreement (Morgantown L3) between
Morgantown OL3 LLC, as Owner Lessor, and State Street Bank and Trust Company of
Connecticut, National Association, as Lease Indenture Trustee, dated as of
December 19, 2000

Indenture of Trust, Mortgage and Security Agreement (Morgantown L4) between
Morgantown OL4 LLC, as Owner Lessor, and State Street Bank and Trust Company of
Connecticut, National Association, as Lease Indenture Trustee, dated as of
December 19, 2000

Indenture of Trust, Mortgage and Security Agreement (Morgantown L5) between
Morgantown OL5 LLC, as Owner Lessor, and State Street Bank and Trust Company of
Connecticut, National Association, as Lease Indenture Trustee, dated as of
December 19, 2000

Indenture of Trust, Mortgage and Security Agreement (Morgantown L6) between
Morgantown OL6 LLC, as Owner Lessor, and State Street Bank and Trust Company of
Connecticut, National Association, as Lease Indenture Trustee, dated as of
December 19, 2000

Indenture of Trust, Mortgage and Security Agreement (Morgantown L7) between
Morgantown OL7 LLC, as Owner Lessor, and State Street Bank and Trust Company of
Connecticut, National Association, as Lease Indenture Trustee, dated as of
December 19, 2000