Certification Pursuant to Section
302of the Sarbanes-Oxley Act of 2002

I,John
W. Sheridan,certify that:

|1. |  | I
      have reviewed this annual report on Form 40-F of Ballard Power Systems
      Inc.;                                                                                                                                                                                                                                                                
|-- |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|   |  |                                                                                                                                                                                                                                                                                                                                                           
|2. |  | Based on my knowledge,
      this report does not contain any untrue statement of a material fact or
      omit to state a material fact necessary to make the statements made, in
      light of the circumstances under which such statements were made, not
      misleading with respect to the period covered by this report;                        
|  
|3. |  | Based on my knowledge,
      the financial statements, and other financial information included in this
      report, fairly present in all material respects the financial condition,
      results of operations and cash flows of the issuer as of, and for, the
      periods presented in this report;                                               
|  
|4. |  | The issuers other
      certifying officer and I are responsible for establishing and maintaining
      disclosure controls and procedures (as defined in Exchange Act Rules
      13a-15(e) and 15d-15(e)) and internal control over financial reporting (as
      defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the issuer and
      have:
|  
|   |  | a)                                                                                                                                                                                                                                                                                                                                                        
|  
|   |  | b)                                                                                                                                                                                                                                                                                                                                                        
|  
|   |  | c)                                                                                                                                                                                                                                                                                                                                                        
|  
|   |  | d)                                                                                                                                                                                                                                                                                                                                                        
|  
|5. |  | The issuers other
      certifying officer and I have disclosed, based on our most recent
      evaluation of internal control over financial reporting, to the issuers
      auditors and the audit committee of the issuers board of directors (or
      persons performing the equivalent functions):                                               
|  
|   |  | a)                                                                                                                                                                                                                                                                                                                                                        
|  
|   |  | b)                                                                                                                                                                                                                                                                                                                                                        

|Date: February 23, 2012              
|-------------------------------------
|                                     
|By:                                  
|Name: John W. Sheridan               
|President and Chief Executive
Officer

A signed original of this written
statement required by Section 302 has been provided to Ballard Power Systems
Inc. and will be retained by Ballard Power Systems Inc. and furnished to the
Securities and Exchange Commission or its staff upon request.

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Certification Pursuant to Section
302of the Sarbanes-Oxley Act of 2002

I,Tony Guglielmin,certify that:

1.
    
    I
      have reviewed this annual report on Form 40-F of Ballard Power Systems
      Inc.;2.
    
    Based on my knowledge,
      this report does not contain any untrue statement of a material fact or
      omit to state a material fact necessary to make the statements made, in
      light of the circumstances under which such statements were made, not
      misleading with respect to the period covered by this report;3.
    
    Based on my knowledge,
      the financial statements, and other financial information included in this
      report, fairly present in all material respects the financial condition,
      results of operations and cash flows of the issuer as of, and for, the
      periods presented in this report;4.
    
    The issuers other
      certifying officer and I are responsible for establishing and maintaining
      disclosure controls and procedures (as defined in Exchange Act Rules
      13a-15(e) and 15d-15(e)) and internal control over financial reporting (as
      defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the issuer and
      have:a)
    
    Designed such disclosure controls
      and procedures, or caused such disclosure controls and procedures to be
      designed under our supervision, to ensure that material information
      relating to the issuer, including its consolidated subsidiaries, is made
      known to us by others within those entities, particularly during the
      period in which this report is being prepared;b)
    
    Designed such internal control
      over financial reporting, or caused such internal control over financial
      reporting to be designed under our supervision, to provide reasonable
      assurance regarding the reliability of financial reporting and the
      preparation of financial statements for external purposes in accordance
      with generally accepted accounting principles;c)
    
    Evaluated the effectiveness of
      the issuers disclosure controls and procedures and presented in this
      report our conclusions about the effectiveness of the disclosure controls
      and procedures, as of the end of the period covered by this report based
      on such evaluation; andd)
    
    Disclosed in this report any
      change in the issuers internal control over financial reporting that
      occurred during the period covered by the annual report that has
      materially affected, or is reasonably likely to materially affect the
      issuers internal control over financial reporting; and5.
    
    The issuers other
      certifying officer and I have disclosed, based on our most recent
      evaluation of internal control over financial reporting, to the issuers
      auditors and the audit committee of the issuers board of directors (or
      persons performing the equivalent functions):a)
    
    All significant deficiencies and
      material weaknesses in the design or operation of internal control over
      financial reporting which are reasonably likely to adversely affect the
      issuers ability to record, process, summarize and report financial
      information; andb)
    
    Any fraud, whether or not
      material, that involves management or other employees who have a
      significant role in the issuers internal control over financial
      reporting.

|Date: February 23, 2012                     
|--------------------------------------------
|                                            
|By:                                         
|Name: Tony Guglielmin                       
|Vice President and Chief Financial
  Officer

A signed original of this written
statement required by Section 302 has been provided to Ballard Power Systems
Inc. and will be retained by Ballard Power Systems Inc. and furnished to the
Securities and Exchange Commission or its staff upon request.

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