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| For the fiscal year ended      December 31, 2009   |  Commission File Number      000-53543 |
|--------------------------------------------------------------|---------------------------------------------|

|  Securities      registered or to be registered pursuant to Section 12(b) of the      Act.  |
|-------------------------------------------------------------------------------------------------------|
| Title of each class                                                                                   | Name of each exchange on which      registered |
| Common      Shares                                                                                    | NASDAQ      Global Market |

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|  Securities      registered or to be registered pursuant to Section 12(g) of the      Act.                                                                                                                                                 Not      Applicable |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| Securities      for which there is a reporting obligation pursuant to Section 15(d) of the      Act.                                                                                                                                                 Not      Applicable |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| [X] Annual information      form   |  [X] Audited annual      financial statements  |
|----------------------------------------------|----------------------------------------------------------|

| Yes      [X] | No      [   ] |
|--------------|------------------------------|

| Yes      [   ] | No      [   ] |
|-------------------------------|------------------------------|

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| By      (Signature and Title) | /s/ John W.      Sheridan                                                                                          John      W. Sheridan |
|-------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|                          | President      and Chief Executive Officer                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |

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| Exhibit |                           | Description                                                                                                                 |
|---------|--------------------------------|-----------------------------------------------------------------------------------------------------------------------------|
|    |                           |                                                                                                                        |
| 99.1    |       | Ballard      Power Systems Inc. Consolidated Financial Statements for the years ended      December 31, 2009 and 2008. |
|    |
| 99.2    |                           | Ballard      Power Systems Inc. Management’s Discussion and Analysis for the year ended      December 31, 2009.       |
|    |
| 99.3    |                           | Annual      Information Form for Ballard Power Systems Inc. dated as of March 15,      2010.                                |
|    |
| 99.4    |                           | Certifications      pursuant to Section 302 of the Sarbanes-Oxley Act of  2002                                              |
|    |
| 99.5    |                           | Certifications      pursuant to Section 906 of the Sarbanes-Oxley Act of  2002                                              |
|    |
| 99.6    |                           | Consent      of KPMG LLP                                                                                                    |
|    |

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