UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

FORM 10-Q/A

(Mark One)

For the quarterly period ended September 30, 2013

OR

Commission file number: 333-178786-01

GREENBACKER RENEWABLE ENERGY COMPANY LLC

(Exact Name of Registrant as Specified in its Charter)

535 Fifth Avenue, Suite 421

New York, NY 10017

Tel (646) 532-6707

(Address, including zip code and telephone number, including area code, of registrants Principal Executive Office)

Charles Wheeler

c/o Greenbacker Capital Management LLC

535 Fifth Avenue, Suite 421

New York, NY 10017

Tel (646)532-6707

(Name, address, including zip code, and telephone number, including area code, of agent for service)

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  x    No  ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  x    No  ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (check one):

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes  ¨    No  x

As of November 14, 2013, the registrant had 200 shares of common stock, $0.001 par value, outstanding.

EXPLANATORY NOTE

This Form 10-Q/A is filed with the Securities and Exchange Commission solely to correct an error on the Certification of the Chief Executive Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 and Certification of the Chief Executive Officer Pursuant to Section 18 U.S.C, Section 1350, Section 906 of the Sarbanes-Oxley Act of 2002 (the “Certifications”). The certifications have been amended to reflect the fact that Charles Wheeler was the Chief Executive Officer of Greenbacker Renewable Energy Company LLC on the date of the filing of the Form 10-Q.

Other than the changes described above, all other information in our original Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission on November 14, 2013 remains unchanged.

PART II

OTHER INFORMATION

Item 1. Legal Proceedings

None of us, GCM, or the Administrator, is currently subject to any material legal proceedings, nor, to our knowledge, is any material legal proceeding threatened against us, or against GCM or the Administrator.

Item 1A. Risk Factors

Not applicable.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

Not applicable.

Item 3. Defaults upon Senior Securities

Not applicable.

Item 4. Mine Safety Disclosures

Not applicable.

Item 5. Other Information

Not applicable.

Item 6. Exhibits

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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.

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