May 26, 2015
ZBB Energy Announces Revolutionary Matrix Energy Management System(TM) for Commercial and Industrial Buildings

Innovative Matrix Energy Management System Actively Synchronizes All Energy and Communications Inputs and Outputs, Transforming Buildings Into Cash Generating Assets

MILWAUKEE, WI--(Marketwired - May 26, 2015) - ZBB Energy Corporation (NYSE MKT: ZBB), a leading developer of innovative energy management systems solutions serving the utility and commercial and industrial (C&I) building markets, today announced the introduction of the Matrix Energy Management System, a revolutionary energy synchronization system that enables a dramatic reduction in the cost of electricity and increases the financial returns of building distributed generation systems.

The Matrix system maximizes the economic potential of the commercial and industrial building, by enabling the owner to monetize as many energy management functions and applications as possible. There are about a dozen energy management functions and applications that currently exist, and this will increase in the future. Performing these energy management applications involves combinations of AC, DC and communication inputs and outputs, and could include energy storage systems, PV, the grid, DC lighting, diesel gen-sets, fuel cells, building level wind turbines, data logging and analysis, PV optimizer data, weather forecast data and more. Matrix manages and synchronizes all of these inputs and outputs in an "active mode", for the most efficient, economical, simple and flexible solution on the market.

The conventional approach to design of a commercial building distributed generation energy management system is to reactively control all DC and AC inputs off of an AC-Bus. Systems that use a central controller, are highly complex, low in efficiency and can cause instability in the grid. Worse, they cannot be changed without re-optimization. A newer approach is to reactively control with a central system controller off of the system DC-Bus, somewhat improving efficiency, but being just as complex and rigid. The Matrix is a leapfrog in technology and approach, with distributed intelligence and active controlling from the DC-Bus without the requirement for a central system controller. It is highly efficient, simple and scalable, with new capabilities and functions being easy to add as the building or PPA owner desires.

"The Matrix leverages ZBB's proprietary 'Auto-Sync' DC-Bus architecture to enable distributed intelligence and active control of inputs and outputs inside the building, as well as provide the communication capability required to seamlessly link the building to other buildings, or to the utility," said Brad Hansen, President and COO of ZBB Energy. "The drawer-based modules allow functions to be configured or added in the future without re-optimizing the overall system and it's a much higher efficiency system than anything else on the market. There's simply no other product like Matrix available today."

Commercial and Industrial buildings are now being recognized as a major opportunity for distributed generation assets to create "net zero" buildings, introduce power purchase agreements (PPA's) and provide the utilities with sources of energy at critical peak or critical load situations. There are more than 5.5 million existing commercial and industrial buildings in the USA alone, with hundreds of new buildings being constructed every day. ZBB Energy is the only company that can provide complete, innovative and leading C&I building energy storage and energy management systems that unlock opportunities to generate income today, as well as "future proof" for any additional applications and requirements that could be anticipated over the life of the asset. This includes energy management and hybrid energy storage systems.

"We recently announced the introduction of the Agile Hybrid Series energy storage system, which can support any short discharge, high power or long discharge high-energy applications in the building. ZBB has the most innovative, flexible and cost effective systems approach enabling the applications required today, in addition to those of tomorrow, to maximize the return on investment to the building or PPA owner," Hansen continued. "The Matrix is a breakthrough product and immediately makes obsolete the static, reactive and uneconomical energy management systems currently available in the market."

The Matrix Energy Management System begins shipment in the fourth calendar quarter this year.

About ZBB Energy Corporation
ZBB Energy Corporation (NYSE MKT: ZBB) is an applications solutions company providing advanced energy management systems critical to the transition from a "coal-centric economy" to one reliant on an enormous expansion in renewable energy. Whether part of the grid power transmission and distribution network, or behind the meter in commercial, industrial and multi-tenant buildings, ZBB Energy brings vital power control and energy storage solutions to the most pressing problems caused by the incorporation of increasingly pervasive renewable energy generating assets. ZBB Energy also provides energy management systems for off-grid applications such as island or remote power. ZBB is a global corporation, with a joint venture in AnHui, China at Meineng Energy, as well as a strategic partnership with Lotte Chemical in South Korea. For more information, visit: www.zbbenergy.com.

Safe Harbor Statement
Certain statements made in this press release contain forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities and Exchange Act of 1934, as amended that are intended to be covered by the "safe harbor" created by those sections. Forward-looking statements, which are based on certain assumptions and describe our future plans, strategies and expectations, can generally be identified by the use of forward-looking terms such as "believe," "expect," "may," "will," "should," "could," "seek," "intend," "plan," "estimate," "anticipate" or other comparable terms. Forward-looking statements in this press release may address the following subjects among others: statements regarding the sufficiency of our capital resources, expected operating losses, expected revenues, expected expenses and our expectations concerning our business strategy. Forward-looking statements involve inherent risks and uncertainties which could cause actual results to differ materially from those in the forward-looking statements, as a result of various factors including those risks and uncertainties described in the Risk Factors and in Management's Discussion and Analysis of Financial Condition and Results of Operations sections of our most recently filed Annual Report on Form 10-K and our subsequently filed Quarterly Reports on Form 10-Q. We urge you to consider those risks and uncertainties in evaluating our forward-looking statements. We caution readers not to place undue reliance upon any such forward-looking statements, which speak only as of the date made. Except as otherwise required by the federal securities laws, we disclaim any obligation or undertaking to publicly release any updates or revisions to any forward-looking statement contained herein (or elsewhere) to reflect any change in our expectations with regard thereto or any change in events, conditions or circumstances on which any such statement is based.

Investor Contact:
Jeff Elliott
Three Part Advisors, LLC
972-423-7070
or
David Mossberg
817-310-0051

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