Exhibit 23.1

INDEPENDENT AUDITORS' CONSENT


We consent to the  incorporation  by reference in  Registration  Statement  Nos.
333-82230,  333-60294,  333-53657,  333-43768,  and  333-92003  on Form  S-3 and
Registration Statement Nos. 333-53765,  333-40472,  333-79151 on Form S-8 of our
report dated  February 10, 2003 (February 26, 2003, as to Note 16) (which report
expresses an unqualified opinion and includes explanatory  paragraphs related to
the adoption of Statement of Financial  Accounting  Standards No. 142, "Goodwill
and Other Intangible Assets" and related revisions made to Note 1G and revisions
made to Note 12, related to subsidiary guarantor information related to the 2001
and 2000 consolidated  financial  statements that were audited by other auditors
who have ceased  operations  and for which we have expressed no opinion or other
form of assurance other than with respect to such disclosures) appearing in this
Annual  Report on Form 10-K/A,  Amendment No. 1 of KeySpan  Corporation  for the
year ended December 31, 2002.


/s/  Deloitte & Touche LLP
     New York, NY
     July 24, 2003