GreenMan Technologies Fiscal 2007 Second Quarter Financial Release and Conference Call Alert

SAVAGE, MN -- (MARKET WIRE) -- May 4, 2007 -- GreenMan Technologies, Inc. (OTCBB: GMTI), a leading recycler of over 12 million scrap tires per year in the United States, today announced that it plans to release the results for its second fiscal quarter ended March 31, 2007 on Wednesday, May 9, 2007, after the close of the market.

On Thursday, May 10, 2007, GreenMan will host a conference call at 12:00 PM EDT in which we will discuss the results for the quarter ended March 31, 2007. To participate, please call 1-800-632-2975 and ask for the GreenMan call. A replay of the conference call can be accessed until 11:50 PM on May 11, 2007 by calling 877-519-4471 and entering pass code 8774067.

GreenMan was founded in 1992 and today operates facilities in Iowa and Minnesota which collect, process and market over 12 million scrap tires in whole, shredded or granular form. Our products are used as an efficient alternative fuel by pulp and paper producers and electric utilities; as a substitute for crushed stone in civil engineering applications, such as road beds, landfill and septic field construction; or as crumb rubber which is used for playground and athletic surfaces, running tracks and landscaping/groundcover applications. To learn more, please visit our website at www.greenman.biz

"Safe Harbor" Statement: Under the Private Securities Litigation Reform Act

With the exception of the historical information contained in this news release, the matters described herein contain "forward-looking" statements that involve risk and uncertainties that may individually or collectively impact the matters herein described, including but not limited to the possibility that we may not be able to secure the financing necessary to return to profitability, the possibility that the delisting of our stock by the American Stock Exchange could substantially limit our stock's future liquidity and our ability to raise capital, the possibility that we may not realize the benefits of product acceptance, economic, competitive, governmental, seasonal, management, technological and/or other factors outside the control of the Company, which are detailed from time to time in the Company's SEC reports, including the annual report on Form 10-KSB for the fiscal period ended September 30,2006. The Company disclaims any intent or obligation to update these "forward-looking" statements.

Contact Information: Contacts: Chuck Coppa CFO Lyle Jensen CEO GreenMan Technologies 800-526-0860