Exhibit 31(f)




CERTIFICATION






I, Peter M. Scott III, certify
      that:




1. I
      have
      reviewed this quarterly report on Form 10-Q of Florida Power
      Corporation;




2. Based
      on
      my knowledge, this quarterly 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 quarterly
      report;




3. Based
      on
      my knowledge, the financial statements, and other financial information included
      in this quarterly report, fairly present in all material respects the financial
      condition, results of operations and cash flows of the registrant as of, and
      for, the periods presented in this quarterly report;




4. The
      registrant'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)) for the registrant and we 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
      registrant, including its consolidated subsidiaries, is made known to us by
      others within those entities, particularly during the period in which this
      quarterly report is being prepared;


b)   
evaluated
      the effectiveness of the registrant's
      disclosure controls and procedures and presented in this quarterly report our
      conclusions about the effectiveness of the disclosure controls and procedures,
      as of the end of the period covered by this quarterly report based on such
      evaluation; and


c)    
disclosed
      in this quarterly report any change
      in the registrant’s internal control over financial reporting that occurred
      during the registrant’s most recent fiscal quarter (the registrant’s first
      fiscal quarter in the case of this quarterly report) that has materially
      affected, or is reasonably likely to materially affect, the registrant’s
      internal control over financial reporting; and




5. The
      registrant's other certifying officer and I have disclosed, based on our most
      recent evaluation of internal control over financial reporting, to the
      registrant's auditors and the audit committee of registrant's board of
      directors:




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 registrant's
      ability to record, process, summarize and report financial information;
      and


b)   
any
      fraud, whether or not material, that involves
      management or other employees who have a significant role in the registrant's
      internal control over financial reporting.






Date:
                May 9, 2006
            /s/
                Peter M. Scott IIIPeter
                M. Scott IIIExecutive
                Vice President and Chief Financial
                Officer