Washington, D.C.  20549


Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of report (Date of earliest event reported): April 8, 2011

ZBB Energy Corporation
      (Exact name of registrant as specified in charter)

(State or other jurisdiction
of incorporation)
file number)
(IRS Employer
Identification Number)
N93 W14475 Whittaker Way, Menomonee Falls, Wisconsin   53051
(Address of principal executive offices)   (Zip Code)

Registrant’s telephone number, including area code:     (262) 253-9800

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   1.01.   Entry into a Material Definitive Agreement.
On April 8, 2011, ZBB Energy Corporation (the “Company”) entered into a Collaboration Agreement (the “Collaboration Agreement”) with Honam Petrochemical Corporation (“Honam”), a division of LOTTE Petrochemical, pursuant to which the Company and Honam agree to collaborate on the further technical development of the Company’s third generation Zinc Bromide flow battery module (the “Version 3 Battery Module”).  Pursuant o the Collaboration Agreement, Honam will pay the Company a total of $3 million dollars as follows: (1) $1 million within 10 days following execution of the Collaboration Agreement; (2) $500,000 by June 30, 2011; (3) $1.2 million by October 10, 2011 and (4) $300,000 within 10 days after a V3 single stack is set up at Honam’s research and development center.
Pursuant to the Collaboration Agreement, the parties will negotiate a license agreement under which upon the completion of the collaboration project and the receipt by the Company of all payments due under the Collaboration Agreement, the Company shall grant to Honam: (1) a fully paid-up, exclusive and royalty-free license to sell and manufacture the Version 3 Battery Module in Korea and (2) non-exclusive rights to sell the Version 3 Battery Module in Japan, Thailand, Taiwan, Malaysia, Vietnam and Singapore.  In connection with such non-exclusive rights, Honam will pay a royalty to the Company.


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.
  ZBB Energy Corporation  
Dated: April 13, 2011
/s/ Eric C. Apfelbach  
  Name: Eric C. Apfelbach  
  Title: President and CEO