HYGSD Hydrogenics - Common Shares (MM)

Hydrogenics Corporation (TSX: HYG)(NASDAQ: HYGS)(NASDAQ: HYGSD) (trading under "HYGSD" temporarily), a leading developer and manufacturer of hydrogen generation and fuel cell products, today clarified the company's recent ticker symbol change on the NASDAQ Global Market. As a result of NASDAQ's internal procedures following the completion of the non-dilutive financing transaction involving Algonquin Power Income Fund, as announced on October 27, 2009, the suffix character "D" will be appended to the company's trading symbol for approximately 20 trading days. Accordingly, Hydrogenics will trade under the symbol "HYGSD" for approximately 20 trading days. After that time, the symbol will revert back to HYGS. This temporary adjustment in the company's ticker does not reflect any change in Hydrogenics' operations or trading status.

ABOUT HYDROGENICS

Hydrogenics Corporation (www.hydrogenics.com) is a globally recognized developer and provider of hydrogen generation and fuel cell products and services, serving the growing industrial and clean energy markets of today and tomorrow. Based in Mississauga, Ontario, Canada, Hydrogenics has operations in North America and Europe.

Contacts: Hydrogenics Corporation Lawrence Davis Chief Financial Officer (905) 361-3633 investors@hydrogenics.com Hydrogenics Corporation Chris Witty Investor Relations (646) 438-9385 cwitty@darrowir.com www.hydrogenics.com