| Ballard Power Systems |
| http://www.ballard.com/ |
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Ballard is a world leader in developing, manufacturing, and marketing zero-emission proton exchange membrane (PEM) fuel cells. Many auto manufacturers use Ballard fuel cells to power their vehicles. |

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| UTC Fuel Cells |
| http://www.utcfuelcells.com/utcpower/index.htm |
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The United Technologies Company (UTC) fuel cell division develops applications for both stationary and automotive applications. UTC also develops fuel cells for NASA missions. |

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| Plug Power |
| http://www.plugpower.com/index.cfm |
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Plug Power specializes on stationary fuel cell applications based in Latham, NY. |

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| Pemeas |
| http://www.pemeas.com/ |
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This German manufacturer specializes in stationary high temperature polymer electrolyte membrane (PEM) fuel cell. |

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| General Hydrogen |
| http://www.generalhydrogen.com/index.shtml |
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General Hydrogen is a privately owned company that is focused on developing hydrogen powered systems for commercial industry. |

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| Hydrogenics |
| http://www.hydrogenics.com/default.asp |
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Hydrogenics builds fuel cells for commercial applications in transportation, stationary and portable power markets. |

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