Neah Power Announces Successful Testing of Fuel Cell Prototype Components

Initial Prototype Anticipated September 30, 2007

September 6, 2007

The initial prototype, which is estimated to generate power in the five watt to 12 watt range based on component measurements, specifications and assumptions, is on track for completion by the end of this month and will be another key milestone on the path toward a commercial fuel cell. According to Frost and Sullivan, U.S. demand for batteries in military and aerospace applications should grow from approximately $930 million in 2002 to $1.2 billion by 2009.

“With the successful component unit testing, we achieved another key milestone on the path toward commercialization,” said Dan Rosen, executive chairman of Neah Power.

“We have successfully tested the components of our fuel cell prototype and are now focusing on completing our integration efforts,” said Dave Wine, VP Engineering at Neah Power. “We fully expect by September 30, we will have a working prototype and remain confident in our ultimate goal of extending the operating time of 10 watt to 100 watt devices multiple times beyond that of conventional batteries.”

About Neah Power Systems

Neah Power Systems is a micro fuel cell development company using a patented, silicon-based design to provide long-lasting, efficient and safe power solutions for portable electronic devices, including notebook PCs and other power-hungry computer, entertainment, and communications products. As an emerging leader in fuel cell technology and design, Neah Power Systems believes that its products will allow users to extend the operating time of their devices multiple times beyond that of conventional batteries. Key investors include Alta Partners, Frazier Technology Ventures, Castile Ventures, WestAM and Intel Capital. Neah Power Systems is headquartered just outside of Seattle in Bothell, Washington. Further company information can be found at our Website www.neahpower.com and in the reports that we file with the Securities and Exchange Commission, which are accessible at www.sec.gov.

Statements in this press release that are not statements of historical or current fact constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Such forward-looking statements involve known and unknown risks, uncertainties, and other unknown factors that could cause the actual results of the Company to be materially different from the historical results or from any future results expressed or implied by such forward-looking statements. In addition to statements which explicitly describe such risks and uncertainties, readers are urged to consider statements labeled with the terms “believes,” “belief,” “expects”, “intends”, “anticipates”, “will”, or “plans” to be uncertain and forward-looking. The forward-looking statements contained herein are also subject generally to other risks and uncertainties that are described from time to time in the Company’’s reports and registration statements filed with the Securities and Exchange Commission.

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