0001193125-10-075238 Sample Contracts

EFH Letterhead]

Energy Future Holdings Corp /TX/ • April 1st, 2010 • Electric services

• Company
  Energy Future Holdings Corp /TX/
• Filed
  April 1st, 2010
• Industry
  Electric services

FIRST SUPPLEMENTAL INDENTURE

First Supplemental Indenture • April 1st, 2010 • Energy Future Holdings Corp /TX/ • Electric services • New York

• Contract Type
  First Supplemental Indenture
• Filed
  April 1st, 2010
• Company
  Energy Future Holdings Corp /TX/
• Industry
  Electric services
• Jurisdiction
  New York

First Supplemental Indenture (this “Supplemental Indenture”), dated as of March 16, 2010, among Energy Future Holdings Corp., a Texas corporation (the “Issuer”), the Guarantors named on the signature pages hereto (the “Guarantors”) and The Bank of New York Mellon Trust Company, N.A., as Trustee (the “Trustee”).