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): June 24, 2015

8point3 Energy Partners LP

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code: (408) 240-5500

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 (see General Instruction A.2):

On June 24, 2015, 8point3 Energy Partners LP (the “Partnership”) completed its initial public offering (the “Offering”) of 20,000,000 Class A shares representing limited partner interests in the Partnership (“Class A Shares”) at $21.00 per Class A Share pursuant to a Registration Statement on Form S-1, as amended (File No. 333-202634), initially filed by the Partnership with the Securities and Exchange Commission (the “Commission”) pursuant to the Securities Act of 1933, as amended (the “Securities Act”), on March 10, 2015. The material provisions of the Offering are described in the prospectus, dated June 18, 2015, filed with the Commission on June 19, 2015 pursuant to Rule 424(b) under the Securities Act (the “Prospectus”).

Contribution, Conveyance, Assignment and Assumption Agreement

On June 24, 2015, in connection with the closing of the Offering, the Partnership entered into a Contribution, Conveyance, Assignment and Assumption Agreement (the “Contribution Agreement”) with FS Holdings, Maryland Solar Holdings, Inc. (“MD Solar Holdings”), SP Holdings and OpCo. Immediately prior to the closing of the Offering, the following transactions, among others, occurred pursuant to the Contribution Agreement:

2

The foregoing description is not complete and is qualified in its entirety by reference to the full text of the Contribution Agreement, which is filed as Exhibit 10.1 to this Current Report on Form 8-K and incorporated herein by reference.

Omnibus Agreement

On June 24, 2015, in connection with the closing of the Offering, the Partnership entered into an Omnibus Agreement (the “Omnibus Agreement”) with its general partner, 8point3 General Partner, LLC (the “General Partner”), 8point3 Holding Company, LLC (“Holdings”), First Solar, Inc. (“First Solar”), SunPower Corporation (“SunPower”) and 8point3 Operating Company, LLC (“OpCo”), that addresses the following matters:

3

The foregoing description is not complete and is qualified in its entirety by reference to the full text of the Omnibus Agreement, which is filed as Exhibit 10.2 to this Current Report on Form 8-K and incorporated herein by reference.

Right of First Offer Agreements

On June 24, 2015, in connection with the closing of the Offering, OpCo entered into (i) a Right of First Offer Agreement with First Solar and (ii) a Right of First Offer Agreement with SunPower (collectively, the “ROFO Agreements”). Under the applicable ROFO Agreement, each sponsor granted to OpCo a right of first offer to purchase certain of its solar energy projects for a period of five years following the closing of the Offering, subject to certain exceptions (including an exception for sales of a partial economic interest in such projects in connection with tax equity investments).

The foregoing description is not complete and is qualified in its entirety by reference to the full text of the ROFO Agreements, which are filed as Exhibits 10.3 and 10.4 to this Current Report on Form 8-K and incorporated herein by reference.

Long-Term Incentive Plan

In connection with the Offering, the Partnership adopted the 8point3 General Partner, LLC Long-Term Incentive Plan (the “LTIP”) for employees, consultants and directors of the General Partner or its affiliates who perform services for the Partnership or its affiliates. The LTIP was approved by the General Partner on June 18, 2015 and became effective immediately prior to the closing of the Offering. Awards under the LTIP may consist of unrestricted shares, restricted shares, restricted share units, options and share appreciation rights. The LTIP limits the number of shares that may be delivered pursuant to awards to 2,000,000 Class A Shares, subject to any adjustment due to recapitalization, reorganization or a similar event permitted under the LTIP. The LTIP provides that no director may receive awards in any calendar year with a grant date value in excess of $250,000.

The foregoing description is not complete and is qualified in its entirety by reference to the full text of the LTIP, which is filed as Exhibit 10.5 to this Current Report on Form 8-K and incorporated herein by reference.

Management Services Agreements

On June 24, 2015, in connection with the closing of the Offering, the Partnership entered into (i) a Management Services Agreement (the “FS MSA”) with OpCo, the General Partner, Holdings and First Solar 8point3 Management Services, LLC, a wholly-owned subsidiary of First Solar (the “FS Service Provider”), and (ii) a Management Services Agreement (the “SP MSA” and, together with the FS MSA, the “MSAs”) with OpCo, the General Partner, Holdings and SunPower Capital Services, LLC, a wholly-owned subsidiary of SunPower (the “SP Service Provider” and, together with FS Service Provider, the “Service Providers”). Pursuant to the MSAs, the Service Providers or their affiliates will provide certain services to the Partnership, the General Partner, OpCo and Holdings (the “Service Recipients”).

4

Pursuant to the SP MSA, the SP Service Provider will provide or arrange for the provision of services to the Service Recipients including, but not limited to: general oversight over the services provided under the FS MSA; preparation of certain budgets; certain cash management, billing, collection, treasury, accounting and banking services; supervision over the preparation and submission of financial statements; certain insurance services; and certain investor relations services.

Pursuant to the FS MSA, the FS Service Provider will provide or arrange for the provision of services to the Service Recipients including, but not limited to: general oversight over the services provided under the SP MSA; supervision over the preparation and filing of taxes; certain services related to information technology systems; and certain internal audit and compliance services.

OpCo, on behalf of the Partnership, the General Partner and itself, will initially pay an annual management fee of $1.1 million to the SP Service Provider and $0.6 million to the FS Service Provider, and Holdings will initially pay an annual management fee of $50,000 to each Service Provider, which such amounts will be adjusted annually for inflation. Between December 1, 2015 and November 30, 2016, each Service Provider has a one-time right to increase its management fee by an amount not to exceed 15% in the event that the such Service Provider’s costs exceed the amount of its management fee. In addition, each of OpCo and Holdings are required to reimburse the Service Providers for all out-of-pocket fees, costs and expenses the Service Providers incur in connection with the provision of services under the MSAs, subject to certain limitations. The Service Recipients are also obligated to indemnify the Service Providers and their affiliates for claims arising in connection with the provision of services under the MSAs.

Each of the MSAs has an initial term of five years (subject to specified early termination provisions), and will automatically renew for successive five-year periods unless OpCo or the applicable Service Provider provides timely written notice that it does not wish for the agreement to be renewed.

The foregoing description is not complete and is qualified in its entirety by reference to the full text of the MSAs, which are filed as Exhibits 10.6 and 10.7 to this Current Report on Form 8-K and incorporated herein by reference.

Exchange Agreement

On June 24, 2015, in connection with the closing of the Offering, the Partnership entered into an Exchange Agreement (the “Exchange Agreement”) with the General Partner, OpCo, SunPower YC Holdings, LLC, a wholly owned subsidiary of SunPower (“SP Holdings”), and First Solar 8point3 Holdings, LLC, a wholly owned subsidiary of First Solar (“FS Holdings”). Pursuant to the Exchange Agreement, each of SP Holdings and FS Holdings can tender common units in OpCo and an equal number of its Class B shares representing limited partnership interests in the Partnership (together, the “Tendered Units”), for redemption to OpCo and the Partnership. Each of SP Holdings and FS Holdings has the right to receive, at the election of

5

OpCo with the approval of the conflicts committee of the General Partner, either the number of Class A Shares equal to the number of Tendered Units or a cash payment equal to the number of Tendered Units multiplied by the then current trading price of the Class A Shares. In addition, the Partnership has the right, but not the obligation, to directly purchase such Tendered Units for cash or Class A Shares at its election, subject to the approval of the conflicts committee of the General Partner.

If OpCo elects to require the delivery of Class A Shares in exchange for any Tendered Units, the exchange will be on a one-for-one basis, subject to adjustment in the event of splits or combinations of units, distributions of warrants or other unit purchase rights, specified extraordinary distributions and similar events. If OpCo elects to deliver cash in exchange for such Tendered Units, or if the Partnership exercises its right to purchase Tendered Units for cash, the amount of cash payable will be based on the net proceeds received by the Partnership in a sale of an equivalent number of Class A Shares.

The foregoing description is not complete and is qualified in its entirety by reference to the full text of the Exchange Agreement, which is filed as Exhibit 10.8 to this Current Report on Form 8-K and incorporated herein by reference.

Registration Rights Agreement

On June 24, 2015, in connection with the closing of the Offering, the Partnership entered into a Registration Rights Agreement with FS Holdings and SP Holdings, pursuant to which each of FS Holdings and SP Holdings and their affiliates are entitled to demand registration rights, including the right to demand that a shelf registration statement be filed, and “piggyback” registration rights, for any Class A Shares that each acquires.

The foregoing description is not complete and is qualified in its entirety by reference to the full text of the Registration Rights Agreement, which is filed as Exhibit 10.9 to this Current Report on Form 8-K and incorporated herein by reference.

Equity Purchase Agreement

On June 24, 2015, in connection with the closing of the Offering, the Partnership entered into an Equity Purchase Agreement with OpCo, pursuant to which the Partnership agreed to use all of the net proceeds from the Offering to purchase 20,000,000 of OpCo’s common units (“OpCo Common Units”) from OpCo.

The foregoing description is not complete and is qualified in its entirety by reference to the full text of the Equity Purchase Agreement, which is filed as Exhibit 10.10 to this Current Report on Form 8-K and incorporated herein by reference.

Item 3.02. Unregistered Sales of Securities.

The description in Item 1.01 of the issuances by the Partnership of Class B shares to FS Holdings and SP Holdings on June 24, 2015 in connection with the consummation of the transactions contemplated by the Contribution Agreement is incorporated herein by reference. The foregoing transactions were undertaken in reliance upon the exemption from the registration requirements in Section 4(a)(2) of the Securities Act. The Partnership believes that exemptions other than the foregoing exemption may exist for these transactions.

6

Amended and Restated Agreement of Limited Partnership of 8point3 Energy Partners LP

On June 24, 2015, in connection with the closing of the Offering, the Partnership amended and restated its Partnership Agreement (as amended, the “Partnership Agreement”), which includes, among other things, a change of the end of the fiscal year of the Partnership to November 30. The description of the Partnership Agreement contained in the section of the Prospectus entitled “Material Provisions of the 8point3 Partners Partnership Agreement” is incorporated herein by reference.

The foregoing description and the description contained in the Prospectus are not complete and are qualified in their entirety by reference to the full text of the Partnership Agreement, which is filed as Exhibit 3.1 to this Current Report on Form 8-K and incorporated herein by reference.

Amended and Restated Limited Liability Company Agreement of 8point3 Operating Company, LLC

On June 24, 2015, in connection with the closing of the Offering, OpCo amended and restated its Limited Liability Company Agreement (as amended, the “OpCo LLC Agreement”). The description of the OpCo LLC Agreement contained in the section of the Prospectus entitled “Material Provisions of the OpCo Limited Liability Company Agreement” is incorporated herein by reference.

The foregoing description and the description contained in the Prospectus are not complete and are qualified in their entirety by reference to the full text of the OpCo LLC Agreement, which is filed as Exhibit 3.2 to this Current Report on Form 8-K and incorporated herein by reference.

Amended and Restated Limited Liability Company Agreement of 8point3 General Partner, LLC

On June 24, 2015, in connection with the closing of the Offering, the General Partner amended and restated its Limited Liability Company Agreement (as amended, the “GP LLC Agreement”). The amendment to the GP LLC Agreement included, among other things, outlining the rights of the sole member and the management of the Partnership’s business by the board of directors of the General Partner.

The foregoing description is not complete and is qualified in its entirety by reference to the full text of the GP LLC Agreement, which is filed as Exhibit 3.3 to this Current Report on Form 8-K and incorporated herein by reference.

7

8

SIGNATURE

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 hereunto duly authorized.

Date: June 30, 2015

9

INDEX TO EXHIBITS

10