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):

February 26, 2018

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:

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act (§230.405 of this chapter) or Rule 12b-2 of the Exchange Act (§240.12b-2 of this chapter).

Emerging growth company  ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  ☐

This combined Current Report on Form 8-K is being filed by Great Plains Energy Incorporated (Great Plains Energy) and Kansas City Power & Light Company (KCP&L). KCP&L is a wholly-owned subsidiary of Great Plains Energy and represents a significant portion of its assets, liabilities, revenues, expenses and operations. Thus, all information contained in this report relates to, and is filed by, Great Plains Energy. Information that is specifically identified in this report as relating solely to Great Plains Energy, such as its financial statements and all information relating to Great Plains Energy’s other operations, businesses and subsidiaries, including KCP&L Greater Missouri Operations Company (GMO), does not relate to, and is not filed by, KCP&L. KCP&L makes no representation as to that information. Neither Great Plains Energy nor GMO has any obligation in respect of KCP&L’s debt securities and holders of such securities should not consider Great Plains Energy’s or GMO’s financial resources or results of operations in making a decision with respect to KCP&L’s debt securities. Similarly, KCP&L has no obligation in respect of securities of Great Plains Energy or GMO.

On March 1, 2018, Kansas City Power & Light Company issued $300,000,000 aggregate principal amount of 4.20% Notes due 2048 (the “Notes”), pursuant to an Underwriting Agreement, dated February 26, 2018, among KCP&L, J.P. Morgan Securities LLC, Merrill Lynch, Pierce, Fenner & Smith Incorporated, MUFG Securities Americas Inc. and Wells Fargo Securities, LLC, as representatives of the several underwriters named therein. The Notes were registered under the Securities Act of 1933, as amended, pursuant to the shelf registration statement on Form S-3, as amended (333-202692-01) of KCP&L (the “Registration Statement”).

In connection with the issuance and sale of the Notes, KCP&L entered into the several agreements and other instruments listed in Item 9.01 of this Current Report on Form 8-K and filed as exhibits hereto. These exhibits are incorporated by reference into the Registration Statement.

(d) Exhibits

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrants have duly caused this report to be signed on their behalf by the undersigned hereunto duly authorized.

Date: March 1, 2018