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 W Fund, LLC (the
Fund) on Form 10-Q for the period ended September 30, 2008 as furnished to
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: | October 22,
 2008 |  |  |  |     |        | RIDGEWOOD
 ENERGY W FUND, LLC
| |        |                   |  |  |  |     |        |                               |                                                                                                    
| |        |                   |  |  |  | By: | /s/    |                               | ROBERT E.
 SWANSON                                                                                 
| |        |                   |  |  |  |     |        |                               |                                                                                                    
| |        |                   |  |  |  |     | Name:  |                               | Robert E.
 Swanson                                                                                 
| |        |                   |  |  |  |     | Title: |                               | President
 and Chief Executive Officer
 (Principal Executive Officer)                              
| |        |                   |  |  |  |     |        |                               |                                                                                                    
| | Dated: | October 22,
 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 W Fund, LLC and will be retained by Ridgewood
Energy W Fund, LLC and furnished to the Securities and Exchange Commission or
its staff upon request.

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