SECURITIES AND EXCHANGE COMMISSION
                              Washington, DC 20549


                                    FORM 8-K


                             Current Report Pursuant
                          to Section 13 or 15(d) of the
                         Securities Exchange Act of 1934



       Date of report (Date of earliest event reported): February 1, 2006


                               KEYSPAN CORPORATION
             (Exact Name of Registrant as Specified in Its Charter)


                                    New York
                 (State or Other Jurisdiction of Incorporation)


       1-14161                                           11-3431358
(Commission File Number)                      (IRS Employer Identification No.)

175 East Old Country Road, Hicksville, New York                11801
  One MetroTech Center, Brooklyn, New York                     11201
  (Address of Principal Executive Offices)                  (Zip Code)

                           (516) 755-6650 (Hicksville)
                            (718) 403-1000 (Brooklyn)
              (Registrant's Telephone Number, Including Area Code)



                                      N/A
          (Former Name or Former Address, if Changed Since Last Report)





Cautionary Language Concerning Forward-Looking Statements
- ---------------------------------------------------------

     Certain statements contained herein are forward-looking  statements,  which
reflect  numerous  assumptions  and  estimates and involve a number of risks and
uncertainties.  For these statements, we claim the protection of the safe harbor
for  forward-looking  statements  provided by the Private Securities  Litigation
Reform Act of 1995.

     There are  possible  developments  that could  cause our actual  results to
differ  materially  from  those  forecast  or  implied  in  the  forward-looking
statements.   You  are   cautioned   not  to  place  undue   reliance  on  these
forward-looking  statements,  which  are  current  only  as of the  date of this
filing.  We  disclaim  any  intention  or  obligation  to update  or revise  any
forward-looking  statements,  whether  as a result  of new  information,  future
events or otherwise.

     Among the factors that could cause actual results to differ materially are:
general  economic  conditions,   especially  in  the  Northeast  United  States;
available sources and cost of fuel; volatility of energy prices in a deregulated
market  environment  as well as in the  source of  natural  gas and fuel used to
generate  electricity;  potential  write-down  of our  investment in natural gas
properties  when  natural  gas prices are  depressed  or if we have  significant
downward  revisions  in our  estimated  proved gas  reserves;  federal and state
regulatory  initiatives that increase competition,  threaten cost and investment
recovery,  and impact rate  structures;  our ability to successfully  reduce our
cost structures; implementation of new accounting standards; the degree to which
the we develop  unregulated  business  ventures;  as well as  federal  and state
regulatory  policies  affecting our ability to retain and operate those business
ventures; our ability to identify and make complementary  acquisitions,  as well
as the successful  integration of those  acquisitions;  inflationary  trends and
interest rates; and risks detailed from time to time in reports filed by us with
the Securities and Exchange Commission.





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Item 1.01       Entry into a Material Definitive Agreement

     On December 14, 2005,  KeySpan  Corporation  ("KeySpan"  or the  "Company")
filed a Form 8-K under Item 8.01 - Other Events  disclosing that KeySpan and the
Long Island  Power  Authority  ("LIPA")  had  announced  their  intention to (i)
extend,  amend and restate the Management Services  Agreement,  dated as of June
26, 1997 (the "MSA"), pursuant to which KeySpan currently operates and maintains
the electric  transmission and distribution  system ("T&D System") owned by LIPA
on Long Island;  (ii) enter into a new Option and  Purchase  and Sale  Agreement
(the "Option  Agreement"),  to replace the Generation  Purchase Rights Agreement
(as  amended,  the  "GPRA"),  pursuant  to which  LIPA had the  option,  through
December 15, 2005,  to  effectively  acquire  substantially  all of the electric
generating  facilities  owned by  KeySpan  on Long  Island;  (iii)  enter into a
Settlement Agreement (the "Settlement  Agreement")  resolving outstanding issues
between the parties ((i), (ii) and (iii) are collectively  referred to herein as
the "2006 LIPA  Agreements").  Additionally,  it was announced that in the event
LIPA  exercises its rights under the Option  Agreement then the Company and LIPA
will enter into amendments to the Power Supply  Agreement  ("PSA"),  pursuant to
which  KeySpan  supplies  LIPA  with  electric   generating   capacity,   energy
conservation  and ancillary  services from our Long Island  generating units and
the Energy Management  Agreement ("EMA"),  pursuant to which KeySpan manages all
aspects of the fuel supply for our Long Island generating  facilities as well as
all aspects of the capacity and energy owned by or under contract to LIPA

     In our December 14, 2005 Form 8-K, we  indicated  that the 2006  Agreements
were  conditioned  upon,  among other things,  the  successful  negotiation  and
execution  of  definitive   documentation   and  the  receipt  of  all  required
governmental  approvals.  The  parties  have  completed  such  negotiations  and
definitive  agreements were fully executed on February 1, 2006. These agreements
will become effective as of January 1, 2006,  following receipt of all necessary
governmental approvals, which are pending. The effectiveness of each of the 2006
LIPA  Agreements is conditioned  upon all of the 2006 LIPA  Agreements  becoming
effective.

     Below is a summary of each of the 2006 LIPA Agreements:


         1.       Management Services Agreement
                  -----------------------------

     The MSA is between the Long Island  Lighting  Company  ("LILCO") d/b/a LIPA
and KeySpan Electric  Services LLC. The amended and restated MSA provides a five
year  extension of the term through  December 31, 2013.  Under the MSA,  KeySpan
will  continue to perform  day-to-day  operation  and  maintenance  services and
capital improvements on LIPA's T&D System,  including among other functions, T&D
facility operations, customer service, meter reading, planning, engineering, and
construction,  all in accordance with prudent utility  practice and policies and
procedures adopted by LIPA.


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     In  place of the  previous  compensation  structure  (whereby  KeySpan  was
reimbursed  for  budgeted  costs,  and  earned  a  management  fee  and  certain
performance and cost-based incentives),  KeySpan's compensation for managing the
T&D System  under the MSA  consists of two  components:  a minimum  compensation
component  of $224 million per year and a variable  component  based on electric
sales. The $224 million component will remain unchanged for three years and then
increase annually by 1.7%, plus inflation.  The variable  component,  which will
comprise no more than 20% of KeySpan's compensation,  is based on electric sales
on Long Island  exceeding a base amount of 16,558 gigawatt hours,  increasing by
1.7% in each year.  Above that level,  KeySpan will receive  approximately  1.34
cents per kilowatt  hour for the first  contract  year,  1.29 cents per kilowatt
hour in the second  contract year (plus an annual  inflation  adjustment),  1.24
cents per kilowatt  hour in the third  contract  year (plus an annual  inflation
adjustment),  with the per kilowatt hour rate  thereafter  adjusted  annually by
inflation.  Subject to certain  limitations,  KeySpan will be able to retain all
operational efficiencies realized during the term of the MSA.

     LIPA will continue to reimburse KeySpan for certain  expenditures  incurred
in connection  with the operation and  maintenance of the T&D System,  and other
payments made on behalf of LIPA,  including:  real property and other T&D System
taxes, return postage, capital construction expenditures and storm costs.

     The MSA  provides for a number of  performance  metrics  measuring  various
aspects of KeySpan's  performance in the operations and customer  service areas.
Poor  performance  in any metric may  subject  KeySpan  to  financial  and other
non-cost  penalties  (such  financial  penalties not to exceed $7 million in the
aggregate for all performance metrics in any contract year).  Subject to certain
limitations,  superior  performance  in  certain  metrics  can be used to offset
underperformance  in  other  metrics.   Consistent  failure  to  meet  threshold
performance levels for two metrics,  System Average Interruption  Duration Index
(two out of three  consecutive  years) and  Customer  Satisfaction  Index (three
consecutive years), will constitute an event of default under the MSA.

     Should LIPA sell the T&D System to a private  entity during the term of the
MSA, LIPA shall have the right to terminate the MSA,  provided that LIPA will be
required to pay KeySpan's  reasonable  transition costs and a termination fee of
(a) $28 million if the  termination  date occurs on or before December 31, 2009,
and (b) $20 million if the termination date occurs after December 31, 2009.

     A copy of the MSA is  attached  hereto  as  Exhibit  10.1 and  incorporated
herein by reference.  The foregoing  description  of the MSA is qualified in its
entirety by reference to such Exhibit.



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         2.       Option Agreement
                  ----------------

     The Option Agreement is between KeySpan Generation LLC (as seller) and Long
LILCO d/b/a LIPA (as buyer).  The Option Agreement grants LIPA the option during
the period  January 1, 2006 to December 31, 2006 to purchase only  KeySpan's Far
Rockaway and/or E.F. Barrett Generating Stations (and certain related assets) at
a price  equal to the net book  value of each  facility.  The  Option  Agreement
replaces the GPRA, the expiration of which has been stayed pending effectiveness
of the Option  Agreement and the MSA. In the event such agreements do not become
effective by reason of failure to secure  requisite  regulatory  approvals,  the
GPRA will be  reinstated  for a period of 90 days.  If LIPA were to exercise the
option  and  purchase  one or both of the  generation  facilities  (i)  LIPA and
KeySpan  will enter into an operation  and  maintenance  agreement,  pursuant to
which KeySpan will continue to operate these  facilities for a fixed  management
fee plus  reimbursement  for certain  costs;  and (ii) the  existing PSA and EMA
between  LIPA  and  KeySpan  will be  amended  to  reflect  that  the  purchased
generating  facilities  would no longer be  covered by those  agreements.  It is
anticipated  that the fees received  pursuant to the  operation and  maintenance
agreement  will offset the reduction in the operation  and  maintenance  expense
recovery component of the PSA and the reduction in fees under the EMA.

     It  is  also   contemplated   that  to  the  extent  any  emission  credits
attributable to the acquired  facilities are not needed to satisfy the operating
requirements of such plants,  such excess  emissions  credits will be pooled and
applied pro rata to satisfy the operating  requirements of KeySpan's  generating
facilities subject to the PSA. Thereafter, any remaining credits attributable to
the  acquired  plants  may be sold by LIPA,  who  shall  retain  100% of the net
proceeds.

     A copy of the Option  Agreement and related exhibits are attached hereto as
Exhibit 10.2 and incorporated herein by reference.  The foregoing description of
the Option Agreement is qualified in its entirety by reference to such Exhibit.


         3.       Settlement Agreement
                  --------------------

     The Settlement Agreement is among KeySpan,  KeySpan Generation LLC, KeySpan
Electric  Services LLC,  KeySpan Energy Trading Services LLC and. The Settlement
Agreement  resolves  issues that have  existed  between the parties  relating to
various  agreements,  including the MSA, EMA, GPRA, PSA and the Merger Agreement
between KeySpan and LIPA.

     Pursuant to the terms of the Settlement Agreement,  KeySpan and LIPA agreed
to resolve issues that have existed between the parties  relating to the various
agreements  effective  in June 1998.  In  addition  to the  resolution  of these
matters,  KeySpan's  entitlement  to utilize  LILCO's  available tax credits and
other  tax  attributes   will  increase  from   approximately   $50  million  to
approximately $200 million.  These credits and attributes may be used to satisfy
KeySpan's  previously  incurred  indemnity  obligation  to LIPA for any  federal


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income tax liability  that may result from the settlement of a pending IRS audit
for LILCO's tax year ended March 31, 1999.  In  recognition  of these items,  as
well as for the modification and extension of the MSA and the elimination of the
GPRA,  upon  effectiveness  of the  Settlement  Agreement  KeySpan will record a
contractual  asset  in the  amount  of  approximately  $160  million,  of  which
approximately  $110  million  will be  attributed  to the right to utilize  such
additional  credits  and  attributes  and  approximately  $50  million  will  be
amortized  over the eight year term of the MSA. In order to compensate  LIPA for
the foregoing, KeySpan will pay LIPA $69 million in cash and will settle certain
accounts  receivable in the amount of approximately $90 million due from LIPA. A
copy of the  Settlement  Agreement  is  attached  hereto  as  Exhibit  10.3  and
incorporated herein by reference.  The foregoing  description of this Settlement
Agreement is qualified in its entirety by reference to such Exhibit.

     As previously indicated,  the effectiveness of the 2006 LIPA Agreements are
conditioned  upon the receipt of all  governmental  approvals which are pending.
The  effectiveness  of each of the 2006 LIPA Agreements is also conditioned upon
all of the 2006 LIPA Agreements becoming effective.











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Item 9.01.      Financial Statements and Exhibits.
                ----------------------------------

                Exhibits

               10.1 Management  Services  Agreement  dated as of January 1, 2006
                    between the Long Island  Lighting  Company  ("LILCO")  d/b/a
                    LIPA and KeySpan Electric Services LLC

               10.2 Option  Agreement  dated as of January 1, 2006  between  the
                    Long  Island  Lighting  Company  ("LILCO")  d/b/a  LIPA  and
                    KeySpan Electric Services LLC

               10.3 Settlement  Agreement  dated as of  January  1,  2006  among
                    KeySpan,  KeySpan  Generation LLC, KeySpan Electric Services
                    LLC, KeySpan Energy Trading Services LLC and LIPA











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                               INDEX TO EXHIBITS
                               -----------------


Exhibit No.         Exhibit
- -----------         -------

10.1                Management  Services  Agreement  dated as of January 1, 2006
                    between the Long Island  Lighting  Company  ("LILCO")  d/b/a
                    LIPA and KeySpan Electric Services LLC

10.2                Option  Agreement  dated as of January 1, 2006  between  the
                    Long  Island  Lighting  Company  ("LILCO")  d/b/a  LIPA  and
                    KeySpan Electric Services LLC

10.3                Settlement  Agreement  dated as of  January  1,  2006  among
                    KeySpan,  KeySpan  Generation LLC, KeySpan Electric Services
                    LLC, KeySpan Energy Trading Services LLC and LIPA








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                                   SIGNATURES


     Pursuant to the  requirements  of the Securities  Exchange Act of 1934, the
registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned hereunto duly authorized.



                                        KEYSPAN CORPORATION

Dated: February 7, 2006                 By:    /s/ John J. Bishar, Jr.
                                               -----------------------
                                        Name:  John J. Bishar, Jr.
                                        Title: Executive Vice President, General
                                               Counsel, Chief Governance Officer












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