Hydrogenics Delivers Energy Storage System to E.ON in Germany

Hydrogenics Delivers Energy Storage System to E.ON in Germany

MISSISSAUGA, Ontario, Dec. 21, 2012 (GLOBE NEWSWIRE) -- Hydrogenics
Corporation (Nasdaq:HYGS) (TSX:HYG), a leading developer and manufacturer of
hydrogen generation and hydrogen-based power modules, today announced that it
has delivered, on time, a two megawatt "Power-to-Gas" energy storage system to
E.ON, one of the world's largest power and gas companies. Installed in
Falkenhagen, Germany, the groundbreaking application will be fully
commissioned early in 2013 and use surplus renewable energy to produce
hydrogen for storage in the country's existing natural gas pipeline network.
Under this contract, first announced in June, 2012, Hydrogenics provided the
entire hydrogen production facility and will service and maintain the site for
a period of five years.

"We are very pleased to see this energy storage system delivered on time and
ready for commissioning," said Daryl Wilson, President and CEO of Hydrogenics.
"The hydrogen produced by our E.ON equipment in Falkenhagen will be injected
into the natural gas pipeline, making it an effective storage system for the
surplus electrical power currently generated from renewable resources in the
region. Over a 24 hour period the facility will be able to store over 30 MWh
of energy, providing critical electrical grid support.With delivery taking
place in under six months, we have demonstrated our ability to produce
large-scale power-to-gas applications and are confident that we can continue
scaling this business segment going forward.We expect to see many more such
projects in the future that leverage our leading position in the design,
manufacture and installation of large-scale electrolysis systems."

About Hydrogenics

Hydrogenics Corporation is a world leader in engineering and building the
technologies required to enable the acceleration of a global power shift.
Headquartered in Mississauga, Ontario, Hydrogenics provides hydrogen
generation, energy storage and hydrogen power modules to its customers and
partners around the world. Hydrogenics has manufacturing sites in Germany,
Belgium and Canada and service centers in Russia, China, India, Europe, the US
and Canada.

Forward-looking Statements

This release contains forward-looking statements within the meaning of the
"safe harbor" provisions of the U.S. Private Securities Litigation Reform Act
of 1995, and under applicable Canadian securities law. These statements are
based on management's current expectations and actual results may differ from
these forward-looking statements due to numerous factors, including: our
inability to increase our revenues or raise additional funding to continue
operations, execute our business plan, or to grow our business; inability to
address a slow return to economic growth, and its impact on our business,
results of operations and consolidated financial condition; our limited
operating history; inability to implement our business strategy; fluctuations
in our quarterly results; failure to maintain our customer base that generates
the majority of our revenues; currency fluctuations; failure to maintain
sufficient insurance coverage; changes in value of our goodwill; failure of a
significant market to develop for our products; failure of hydrogen being
readily available on a cost-effective basis; changes in government policies
and regulations; failure of uniform codes and standards for hydrogen fuelled
vehicles and related infrastructure to develop; liability for environmental
damages resulting from our research, development or manufacturing operations;
failure to compete with other developers and manufacturers of products in our
industry; failure to compete with developers and manufacturers of traditional
and alternative technologies; failure to develop partnerships with original
equipment manufacturers, governments, systems integrators and other third
parties; inability to obtain sufficient materials and components for our
products from suppliers; failure to manage expansion of our operations;
failure to manage foreign sales and operations; failure to recruit, train and
retain key management personnel; inability to integrate acquisitions; failure
to develop adequate manufacturing processes and capabilities; failure to
complete the development of commercially viable products; failure to produce
cost-competitive products; failure or delay in field testing of our products;
failure to produce products free of defects or errors; inability to adapt to
technological advances or new codes and standards; failure to protect our
intellectual property; our involvement in intellectual property litigation;
exposure to product liability claims; failure to meet rules regarding passive
foreign investment companies; actions of our significant and principal
shareholders; dilution as a result of significant issuances of our common
shares and preferred shares; inability of US investors to enforce US civil
liability judgments against us; volatility of our common share price; and
dilution as a result of the exercise of options; and failure to meet continued
listing requirements of Nasdaq. Readers should not place undue reliance on
Hydrogenics' forward-looking statements. Investors are encouraged to review
the section captioned "Risk Factors" in Hydrogenics' regulatory filings with
the Canadian securities regulatory authorities and the US Securities and
Exchange Commission for a more complete discussion of factors that could
affect Hydrogenics' future performance. Furthermore, the forward-looking
statements contained herein are made as of the date of this release, and
Hydrogenics undertakes no obligations to revise or update any forward-looking
statements in order to reflect events or circumstances that may arise after
the date of this release, unless otherwise required by law. The
forward-looking statements contained in this release are expressly qualified
by this.

CONTACT: Chris Witty
         Hydrogenics Investor Relations
         (646) 438-9385
         Bob Motz, Chief Financial Officer
         Hydrogenics Corporation
         (905) 361-3660
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