Duke Energy Corp. Business Contract

Duke Energy Corp.

• Restricted Stock Unit Award Agreement - Duke Energy Corp. (May 01, 2012)
• Supplemental Indenture - Duke Energy Corp. (May 01, 2012)
• Combination Agreement - Duke Energy Corp. and Westcoast Energy Inc. (Oct 17, 2009)
• Opinion Letter - In-House Counsel - S-3 Registered Securities - Duke Energy Corp. (May 01, 2012)
• Underwriting Agreement for Common Stock - Duke Energy Corp. (Oct 17, 2009)
• Underwriting Agreement for First and Refunding Mortgage Bonds - Duke Energy Corp. (Oct 17, 2009)
• Underwriting Agreement for Junior Subordinated Notes - Duke Energy Corp. (Oct 17, 2009)
• Underwriting Agreement for Senior Notes - Duke Energy Corp. (Oct 17, 2009)