Exhibit 32.2

                              CERTIFICATION OF THE

              EXECUTIVE VICE PRESIDENT AND CHIEF FINANCIAL OFFICER

                             PURSUANT TO SECTION 906

                        OF THE SARBANES-OXLEY ACT OF 2002



     In connection  with the Report on Form 10-Q for the period ended  September
30,  2006  of  KeySpan  Corporation  (the  "Corporation"),  as  filed  with  the
Securities and Exchange Commission on the date hereof (the "Report"),  I, Gerald
Luterman,   Executive  Vice  President  and  Chief  Financial   Officer  of  the
Corporation, certify, 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, as amended; and

     (2)  The  information  contained  in the  Report  fairly  presents,  in all
          material respects,  the financial  condition and results of operations
          of the Company.



Date:    November 3, 2006

                                                     /s/Gerald Luterman
                                                     ------------------------
                                                     Gerald Luterman
                                                     Executive Vice President
                                                     and Chief Financial Officer