Hamilton Sundstrand and Proton Energy Systems Successfully Qualify Next Generation Electrolysis Cell Stack for Submarine Oxygen Generation Systems

December 1, 2008

WINDSOR LOCKS, Conn., Dec. 1 /PRNewswire/ — Hamilton Sundstrand, a
subsidiary of United Technologies Corporation (NYSE: UTX), and Proton Energy
Systems have successfully qualified the next generation electrolysis cell
stack for use in nuclear submarine oxygen generating systems.

The cell stacks enable the water electrolysis-based oxygen generation
systems to split water into its hydrogen and oxygen elements. This advanced
design will provide customers a high quality and reliable product at a low
cost. The first production delivery is scheduled for June 2009.

The design, development and qualification program, initiated in 2007,
followed rigorous business and technical processes. This proven “design to
cost” approach identified technology improvements that meet system
requirements while maintaining or improving the product’s quality and
reliability. Hamilton Sundstrand and Proton Energy Systems will continue to
implement low cost, technically superior solutions for customers.

“This milestone validates Proton Energy Systems’ selection to supply
Hamilton Sundstrand this key military equipment,” said Larry McNamara,
Hamilton Sundstrand Space, Land & Sea director of Strategy and Development.
“This success now allows us to provide a low cost, quality product to our Navy
customers, and is the first step to continuously reducing the cost of the
oxygen generating system that is operating flawlessly today on Virginia Class submarines.”

“Proton Energy Systems is dedicated to developing the latest and most
advanced hydrogen technologies, and is proud to partner with Hamilton
Sundstrand Space, Land & Sea to bring the next generation electrolysis cell
stacks to fruition,” said Rob Friedland, Proton Energy Systems president and
chief executive officer. “Our efficient production process ensures we can
create the highest quality products at the lowest cost. Proton Energy Systems
looks forward to continuing to work with Hamilton Sundstrand Space, Land & Sea
to bring these cutting edge technologies to market.”

Proton Energy Systems designs, develops, and manufactures proton exchange
membrane (PEM) electrochemical products that meet a variety of needs for
hydrogen generation and advanced energy storage applications. Proton Energy
Systems’ HOGEN(R) hydrogen generators produce hydrogen from electricity and
water in a clean and efficient process using its proprietary PEM technology.
Business segments served by this technology include industrial hydrogen,
vehicle fueling, backup power, military and aerospace, and renewable energy
storage. For more information, visit http://www.protonenergy.com.

With 2007 revenues of $5.6 billion, Hamilton Sundstrand employs
approximately 18,600 people worldwide and is headquartered in Windsor Locks,
. It provides a number of systems for the International Space Station,
including those that control electrical power and process water, waste and
air. The company has been the prime contractor to NASA for the spacesuit since
1981. In addition to its space business, Hamilton Sundstrand is among the
world’s largest suppliers of technologically advanced aerospace and industrial
products. The company also designs, manufactures and services aerospace
systems and provides integrated system solutions for commercial, regional,
corporate and military aircraft.

United Technologies Corp., based in Hartford, Conn., is a diversified
company providing high technology products and services to the building and
aerospace industries worldwide.

     Contact:  Dan Coulom
               Hamilton Sundstrand

               Mark Schiller
               Proton Energy Systems

SOURCE Hamilton Sundstrand

Source: newswire

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