Plug Power Announces Sale to Bridgestone Firestone Tire

LATHAM, N.Y., March 31, 2008 (PRIME NEWSWIRE) -- Plug Power Inc. (Nasdaq:PLUG),
a leader in providing clean, reliable on-site energy solutions, today announced
that officials with Bridgestone Firestone North American Tire, LLC (BFNT) are
moving materials around the Aiken County Bridgestone Firestone tire plant on a
forklift fleet now powered by hydrogen instead of lead-acid batteries. The plant
is converting 22 forklifts to the GenDrive(tm) system this year and expects to
convert the remaining fleet as equipment is retired.

"We are very excited about this new green initiative," said Plant Manager Mike
Rose. "The fuel cells are a direct replacement that last longer than batteries,
take less time to change or refuel and only emit water vapor. This is certainly
a step in the right direction as we work continually to minimize our impact on
our environment."

The project expands on BFNT's success using hydrogen fuel cells to run
industrial vehicles at other facilities. BFNT's current hydrogen-powered
vehicles run two to three times as long on a hydrogen fuel cell and take
one-fourth of the time to refuel compared with battery-powered vehicles. These
changes provide a positive financial return on investment and present the plant
with a viable alternative to traditional vehicles.

This is Bridgestone's fifth order for GenDrive power units in less than two
years. Since delivery of the first units in early 2006, the GenDrive units have
logged more than 10,000 operating hours without service disruption.

"The Bridgestone Aiken County plant continues to demonstrate industry leadership
and environmental stewardship while achieving productivity gains through the
implementation of the GenDrive fuel cell solution. This milestone program
further evidences the value proposition our GenDrive solution offers customers
with large manufacturing operations," said Chris Reid, Vice President, Motive
Power Division, Plug Power.

The GenDrive fuel cell system integrates the proven and reliable Ballard Mark 9
SSL fuel cell with Maxwell ultra-capacitors and high performance on-board
hydrogen storage to produce a "drop-in" replacement for the conventional
industrial lead-acid battery. This unique combination creates a power source
that produces constant output and runs longer before refueling, thereby
increasing daily output and lowering equipment operating costs.

The Bridgestone Firestone plant in Aiken County produces both passenger and
light truck tires. The parent company, Bridgestone Corporation, headquartered in
Tokyo, is the world's largest tire and rubber company.

About Plug Power

Plug Power Inc. (Nasdaq:PLUG), an established leader in the development and
deployment of clean, reliable on-site energy solutions, integrates fuel cell
technology into backup, motive and continuous power products. The Company is
actively engaged with private and public customers in targeted markets
throughout the world, including North America, Europe, the Middle East, Russia,
South Africa and South America. 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.

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Plug Power Inc. 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
our 2008 milestones and statements regarding our growth plans. 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 the anticipated synergies of the Cellex Power
Products, Inc. and General Hydrogen Corp. (now amalgamated as Plug Power Canada
Inc.) acquisitions are not realized; 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 on-site energy products; the cost and timing of
developing Plug Power's on-site energy products; market acceptance of Plug
Power's on-site energy products; Plug Power's ability to manufacture on-site
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
on-site 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; Plug Power's ability to
protect its Intellectual Property; Plug Power's ability to lower the cost of its
on-site 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
on-site 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, 2007, filed with the Securities and Exchange Commission
("SEC") on March 17, 2008, 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 press release.

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CONTACT: Plug Power Inc.
Media Contact:
Eoin Connolly
(518) 782-7700, ext. 1510
Investor Contact:
Cathy Yudzevich
(518) 782-7700, ext. 1448