Exhibit 32

CERTIFICATIONS PURSUANT TO 
18 U.S.C. SECTION 1350, 
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with this
Annual Report on Form 10-K of the Ridgewood Energy P Fund, LLC (the Fund) for
the fiscal year ended December 31, 2008, as filed with the Securities and
Exchange Commission on the date hereof (the Report), each of the undersigned
officers of the Fund hereby certifies, pursuant to 18 U.S.C. (section) 1350, as
adopted pursuant to (section) 906 of the Sarbanes-Oxley Act of 2002, that, to
the best of their knowledge:

| |                                                                                                                                                        
| | -------------------------------------------------------------------------------------------------------------------------------------------------------
| | (1) The Report fully
 complies with the requirements of Section 13(a) or 15(d) of the Securities
 Exchange Act of 1934; and                            
| |                                                                                                                                                        
| | (2) The information
 contained in the Report fairly presents, in all material respects, the
 financial condition and results of operations of the Fund.

|                      |     |        |                                                      
|--------------------- | --- | ------ | -----------------------------------------------------
|Dated: March 16, 2009 |     |        | RIDGEWOOD
 ENERGY P FUND, LLC                        
|                      |     |        |                                                      
|                      | By: | /s/    | ROBERT E. SWANSON                                    
|                      |     |        |                                                      
|                      |     | Name:  | Robert E. Swanson                                    
|                      |     | Title: | President and Chief
 Executive Officer               
|                      |     |        | (Principal Executive
 Officer)                       
|                      |     |        |                                                      
|Dated: March 16, 2009 |     |        |                                                      
|                      | By: | /s/    | KATHLEEN P. McSHERRY                                 
|                      |     |        |                                                      
|                      |     | Name:  | Kathleen P. McSherry                                 
|                      |     | Title: | Executive Vice President
 and Chief Financial Officer
|                      |     |        | (Principal Financial and
 Accounting Officer)        

A signed original of this
written statement or other document authenticating, acknowledging, or otherwise
adopting the signature that appears in typed form within the electronic version
of this written statement has been provided to Ridgewood Energy P Fund, LLC and
will be retained by Ridgewood Energy P Fund, LLC and furnished to the
Securities and Exchange Commission or its staff upon request. The foregoing
certification is being furnished solely pursuant to 18 U.S.C. Section 1350 and
is not being filed as part of this report or as a separate disclosure document.

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