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): November 20, 2017

ENBRIDGE ENERGY PARTNERS, L.P.

(Exact Name of Registrant as Specified in Charter)

5400 Westheimer Court,

Houston, Texas 77056

(Address of Principal Executive Offices) (Zip Code)

(713) 821-2000

(Registrant’s telephone number, including area code)

Not Applicable

(Former Name or Former Address, if Changed Since Last Report)

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 of 1933 (17 CFR §230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR §240.12b-2).

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. ¨

On November 20, 2017, Enbridge Energy Company, Inc., the general partner (the “General Partner”) of Enbridge Energy Partners, L.P. (the “Partnership”), entered into Amendment No. 1 (the “Amendment”) to the Eighth Amended and Restated Agreement of Limited Partnership of the Partnership, dated as of April 27, 2017 (as amended, the “Partnership Agreement”), in response to changes to the Internal Revenue Code enacted by the Bipartisan Budget Act of 2015 (the “BBA”) relating to partnership audit and adjustment procedures. The Amendment makes certain revisions to the Partnership Agreement that facilitate the General Partner’s obligations as the “Partnership Representative” under the BBA and, if possible and practical, provide the General Partner with the option of maintaining the current economic balance by which the partners during a reviewed year bear the economic burden associated with any adjustments for such year.

The foregoing description of the Amendment in this Current Report does not purport to be complete and is qualified in its entirety by reference to the full text of the Amendment, a copy of which is filed as Exhibit 3.1 to this Current Report, and is incorporated herein by reference.

Index of Exhibits

SIGNATURES

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