Department of Defense Purchases 19 GenDrive Power Units From Plug Power

LATHAM, N.Y., June 26, 2009 (GLOBE NEWSWIRE) -- Plug Power Inc. (Nasdaq:PLUG), a
leader in providing clean, reliable energy solutions, today announced it has
been selected to provide 19 class 1 GenDrive fuel cell power units and two years
of managed services for a demonstration project funded by the Department of
Defense (DoD). Plug Power's GenDrive units will be commissioned at the U.S.
Army's Forces Command in Fort Lewis, Washington where they will power a fleet of
sit-down counterbalanced lift trucks.

The two-year project will study and assess the use of wastewater treatment plant
digester gas as a hydrogen source for fuel cells. The hydrogen created will
power the fuel cell forklifts used for heavy maintenance work at Fort Lewis.

Under the project, Plug Power will receive approximately $1.5 M in funding to
supply 19 fuel cell units as well as expertise in system integration, training,
service and support for 24 months. The GenDrive power units will be commissioned
at Fort Lewis during the third quarter of 2010.

"When compared to lead acid batteries, Plug Power's GenDrive fuel cells offer
customers proven economic, operational and environmental benefits," said Andy
Marsh, CEO at Plug Power. "This Army site demonstration project will provide an
opportunity to run our products under rigorous, real-world conditions, adding to
the mounting evidence in support of the commercial viability of hydrogen fuel
cells."

Five industry leaders will partner on the project:

-- The Center for Transportation and the Environment (CTE): overall
project management and administration
-- Plug Power Inc.: provide 19 GenDrive power units for use in
electric lift truck fleet
-- Air Products and Chemicals, Inc.: provide bulk hydrogen storage,
compression and delivery
-- Gas Technology Institute (GTI): supply a hydrogen generation
reformer and gas clean up system for digester gas
-- Proterra LLC: provide a fuel cell hybrid electric bus
This is the third in a series of Defense Logistics Agency (DLA) pilot projects
that demonstrate the economic, operational and environmental benefits of
powering material handling equipment with fuel cells. The projects intend to
build a strong infrastructure for hydrogen delivery and refueling, while
collecting the necessary data for a business case analysis.

About Plug Power Inc.

Plug Power Inc. (Nasdaq:PLUG), an established leader in the development and
deployment of clean, reliable energy solutions, integrates fuel cell technology
into motive, continuous and backup power products. The Company is actively
engaged with private and public customers in targeted markets throughout the
world. For more information about how to join Plug Power's energy revolution as
an investor, customer, supplier or strategic partner, please visit
www.plugpower.com.

The Plug Power Inc. logo is available at
http://www.globenewswire.com/newsroom/prs/?pkgid=4446

Safe Harbor Statement

This communication contains forward-looking statements within the meaning of the
Private Securities Litigation Reform Act of 1995, including but not limited to
statements regarding our growth plan. We believe that it is important to
communicate our future expectations to our investors. However, there may be
events in the future that we are not able to accurately predict or control and
that may cause our actual results to differ materially from the expectations we
describe in our forward-looking statements, including, without limitation, the
risk that unit orders will not ship, be installed and/or convert to revenue, in
whole or in part; Plug Power's ability to develop commercially viable energy
products; the cost and timing of developing Plug Power's energy products; market
acceptance of Plug Power's energy products; Plug Power's ability to manufacture
energy products on a large-scale commercial basis; competitive factors, such as
price competition and competition from other traditional and alternative energy
companies; the cost and availability of components and parts for Plug Power's
energy products; Plug Power's ability to establish relationships with third
parties with respect to product development, manufacturing, distribution and
servicing and the supply of key product components; the cost and availability of
fuel and fueling infrastructures for Plug Power's energy products; Plug Power's
ability to protect its Intellectual Property; Plug Power's ability to lower the
cost of its energy products and demonstrate their reliability; the cost of
complying with current and future governmental regulations; the impact of
deregulation and restructuring of the electric utility industry on demand for
Plug Power's energy products; and other risks and uncertainties discussed under
"Item IA-Risk Factors" in Plug Power's annual report on Form 10-K for the fiscal
year ended December 31, 2008, filed with the Securities and Exchange Commission
("SEC") on March 16, 2009, and the reports Plug Power files from time to time
with the SEC. Plug Power does not intend to and undertakes no duty to update the
information contained in this communication.

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CONTACT: Plug Power Inc.
Media Contact:
Katrina Fritz Intwala
(518) 782-7700 ext. 1360
Investor Relations Contact:
Cathy Yudzevich
(518) 782-7700 ext. 1448