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 the report of Ridgewood Energy P Fund, LLC (the Fund) on Form 10-Q for
the period ended June 30, 2008 as filed with the Securities and Exchange
Commission on the date hereof (the Report), each of the undersigned hereby
certifies, pursuant to 18 U.S.C. section 1350, as adopted pursuant to Section
906 of the Sarbanes-Oxley Act of 2002, that:

(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: August 5,
  2008 |  |     |        | RIDGEWOOD
  ENERGY P FUND, LLC
|                        |  |     |        |                                |                                                       
|                        |  | By: | /s/    |                                | ROBERT E.
  SWANSON                                   
|                        |  |     |        |                                |                                                       
|                        |  |     | Name:  |                                | Robert E.
  Swanson                                   
|                        |  |     | Title: |                                | President
  and Chief Executive Officer               
|                        |  |     |        |                                | (Principal
  Executive Officer)                       
|                        |  |     |        |                                |                                                       
|Dated: August 5,
  2008 |  |     |        |                               
|                        |  |     |        |                                |                                                       
|                        |  | 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.

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