Exhibit 24.2


                               KEYSPAN CORPORATION

                                POWER OF ATTORNEY



     WHEREAS,  KeySpan  Corporation,  a New York  corporation  (the  "Company"),
intends to file with the Securities and Exchange Commission under the Securities
Exchange Act of 1934, as amended, an Annual Report on Form 10-K as prescribed by
said Commission  pursuant to said Act and the rules and regulations  promulgated
thereunder.

     NOW,  THEREFORE,  in my capacity as a director of the Company,  I do hereby
appoint GERALD LUTERMAN, JOHN J. BISHAR, JR. and MICHAEL J. TAUNTON, and each of
them  severally,  as my  attorneys-in-fact  with power to execute in my name and
place, and in my capacity as a director of KeySpan Corporation, said Report, any
amendment  to said  Report  and  any  other  documents  required  in  connection
therewith, and to file the same with the Securities and Exchange Commission.

     IN WITNESS WHEREOF, I have executed this power of attorney this 21st day of
February, 2007.


                                                       /s/Robert J. Fani