UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the

Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): January 12, 2012

DUKE ENERGY CORPORATION

(Exact Name of Registrant as Specified in its Charter)

550 South Tryon Street, Charlotte, North Carolina  28202-4200

(Address of Principal Executive Offices, including Zip code)

(704) 594-6200

(Registrant’s telephone number, including area code)

DUKE ENERGY INDIANA, INC.

(Exact Name of Registrant as Specified in its Charter)

1000 East Main Street, Plainfield, Indiana 46168

(Address of Principal Executive Offices, including Zip code)

(704) 594-6200

(Registrant’s telephone number, including area code)

DUKE ENERGY OHIO, INC.

(Exact Name of Registrant as Specified in its Charter)

139 East Fourth Street, Cincinnati, Ohio 45202

(Address of Principal Executive Offices, including Zip code)

(704) 594-6200

(Registrant’s telephone number, including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

o            Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o            Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

o            Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

o            Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240. 13e-4(c))

Item 8.01.  Other Events.

On January 12, 2012, Duke Energy Vermillion II LLC, a non-regulated indirect subsidiary of Duke Energy Ohio, Inc. (“Duke Energy Ohio”) sold its 75% undivided ownership interest in a gas-fired electric power plant located in Vermillion County, Indiana (the “Transaction”) to Duke Energy Indiana, Inc. (“Duke Energy Indiana”), a regulated affiliate of Duke Energy Ohio, and Wabash Valley Power Association, Inc. (“WVPA”). The total purchase price for the plant was $81.6 million.   The closing of the Transaction was subject to the approval of the Federal Energy Regulatory Commission (the “FERC”) and Indiana Utility Regulatory Commission (the “IURC”) which were received in September and December, 2011, respectively.

As a result of the closing of the Transaction, Duke Energy Indiana now owns a 62.5% undivided interest in the plant as a tenant in common with WVPA, which owns a 37.5% undivided interest.

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SIGNATURE

Pursuant to the requirements of the Securities and Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

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