MARKETSPAN CORP
PRE 14A, 1999-03-23
NATURAL GAS DISTRIBUTION
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                              SCHEDULE 14A INFORMATION

Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934
                               (Amendment No.      )

Filed by the Registrant                      [X]
Filed by a Party other than the Registrant   [ ]

Check the appropriate box:

[X]   Preliminary Proxy Statement

[ ]  Confidential,  for Use of the  Commission  Only  (as  permitted  by Rule
     14a-6(e)(2))

[ ] Definitive Proxy Statement 

[ ] Definitive  Additional Materials

[ ] Soliciting Material Pursuant to ss. 240.14a-11(c) or ss. 240.14a-12


                               MARKETSPAN CORPORATION
- ------------------------------------------------------------------------------
                  (Name of Registrant as Specified In Its Charter)

- -------------------------------------------------------------------------------
       (Name of Person(s) Filing Proxy Statement if other than the Registrant)

Payment of Filing Fee (Check the appropriate box):

[X]   No fee required.

[   ] Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and 0-11.

      1)    Title of each class of securities to which transaction applies:

            -------------------------------------------------------------------

      2) Aggregate number of securities to which transaction applies:

          ------------------------------------------------------------------ 

     3)   Per unit  price  or other  underlying  value of  transaction  computed
          pursuant to Exchange  Act Rule 0-11 (Set forth the amount on which the
          filing fee is calculated and state how it was determined):

            -----------------------------------------------------------------

      4) Proposed maximum aggregate value of transaction:

            ------------------------------------------------------------------

      5) Total fee paid:

            -------------------------------------------------------------------

[   ] Fee paid previously with preliminary materials.

[     ] Check box if any part of the fee is offset as provided  by Exchange  Act
      Rule  0-11(a)(2)  and identify the filing for which the offsetting fee was
      paid  previously.  Identify the previous filing by registration  statement
      number, or the Form or Schedule and the date of its filing.

      1)    Amount Previously Paid:

            -------------------------------------------------------------------

      2)    Form, Schedule or Registration Statement No.:

            -------------------------------------------------------------------

      3)    Filing Party:

            ------------------------------------------------------------------

      4)    Date Filed:

            ------------------------------------------------------------------


<PAGE>

[KeySpan Logo]                            One MetroTech Center
                                          Brooklyn, New York 11201-3850









MARKETSPAN CORPORATION
D/B/A KEYSPAN ENERGY



NOTICE OF 1999 ANNUAL MEETING OF SHAREHOLDERS AND

PROXY STATEMENT



<PAGE>




[KeySpan Logo]                            One MetroTech Center
                                          Brooklyn, New York 11201-3850




LETTER TO SHAREHOLDERS

April 7, 1999


Dear Shareholder:

You are cordially  invited to attend the first Annual of Meeting of Shareholders
of MarketSpan  Corporation d/b/a KeySpan Energy since the transaction  involving
KeySpan Energy  Corporation  ("KSE") and Long Island Lighting Company  ("LILCO")
(the  "Combination"),  at 10:00 a.m. Eastern Time on Thursday,  May 20, 1999, at
the Opera House of the Brooklyn Academy of Music, 30 Lafayette Avenue, Brooklyn,
New York.  We will  review our 1998  performance  with you and our plans for the
future.

This year we have prepared a proxy  statement in what we believe is a simple and
easy to understand  format. We have also introduced a procedure by which you may
provide a proxy by telephone in order to cast your vote more easily. Whether you
choose to provide a written proxy card, or one by telephone, please vote as soon
as  possible.  We hope you find these two changes  more  convenient  for you and
welcome your comments.

I look forward to seeing you on May 20 at the Annual Meeting.  Enclosed with the
Proxy  Statement is your voting card. I would like to take this  opportunity  to
remind you that your vote is important.





Robert B. Catell
Chairman and Chief Executive Officer




<PAGE>




[KeySpan Logo]                            One MetroTech Center
                                          Brooklyn, New York 11201-3850




NOTICE OF ANNUAL MEETING OF SHAREHOLDERS

April 7, 1999


Dear Shareholder:

The Annual  Meeting of  Shareholders  of  MarketSpan  Corporation  d/b/a KeySpan
Energy  ("KeySpan" or the "Company") will be held on Thursday,  May 20, 1999, at
10:00 a.m. Eastern Time, at the Opera House of the Brooklyn Academy of Music, 30
Lafayette Avenue,  Brooklyn,  New York 11217, to consider and take action on the
following proposals:

      1.    Election of fourteen directors;

      2.    Ratification   of  Arthur   Andersen  LLP  as   independent   public
            accountants  for the Company for the fiscal year ending December 31,
            1999;

      3.    Approval of an  amendment to the  Certificate  of  Incorporation  to
            change the Company's name;

      4.    Approval of an Employee Discount Stock Purchase Plan;

      5.    Approval of a Long-Term Performance Incentive Compensation Plan; and

      6.    Transact any other  business  properly  before the Annual Meeting or
            any adjournment thereof.

Shareholders  of  record  as of the  close of  business  on March  22,  1999 are
entitled  to vote at the  Annual  Meeting  or any  postponement  or  adjournment
thereof.

The meeting room will be open at 9:00 a.m.

If your shares are held through a bank or brokerage  firm and you plan to attend
the meeting,  please  request a letter or some other  evidence of ownership from
your  bank or firm as well as  proper  authorization  if you  wish to vote  your
shares in person.

BY ORDER OF THE BOARD OF DIRECTORS,



Robert R. Wieczorek
Vice President, Secretary and Treasurer




<PAGE>




            [ map and directions to the Brooklyn Academy of Music ]




<PAGE>




                   PROXY STATEMENT OF MARKETSPAN CORPORATION
                   ANNUAL MEETING TO BE HELD ON MAY 20, 1999

Proxies are being  solicited  on behalf of the Board of Directors of the Company
for  use at the  Annual  Meeting  of  Shareholders  on May  20,  1999,  and  any
adjournment  thereof.  This  Proxy  Statement  is  first  being  mailed  to  the
shareholders of the Company on or about April 7, 1999.

Q:   WHAT AM I VOTING ON?
A:   Election of fourteen  directors,  ratification  of Arthur  Andersen  LLP as
     independent  public  accountants  for the fiscal year ending  December  31,
     1999,  approval of a change to the company's name,  approval of an Employee
     Discount Stock Purchase Plan, approval of a Long-Term Performance Incentive
     Compensation Plan and any other business properly before the meeting.

Q:   WHO IS ENTITLED TO VOTE?
A:   Common  stock  shareholders  as of the close of  business on March 22, 1999
     (the "Record Date"). Each share of KeySpan Energy's common stock, par value
     $.01 per share (the "Common Stock") is entitled to one vote.

Q:   HOW DO I VOTE?
A:   As  discussed  in greater  detail  below,  there are two  methods.  You may
     complete  and  return  your  proxy  card or you may  also  give a proxy  by
     telephone, by calling 1- 800-574-6864.  Please have your proxy card in hand
     when you call.  If a  shareholder  wishes to give a proxy to someone  other
     than the  individuals  named as  proxies on the proxy  card,  he or she may
     cross out the names  appearing  on the proxy card,  insert the name of some
     other person or persons,  sign, date and give the proxy card to such person
     or persons for use at the meeting.

Q:   HOW DOES DISCRETIONARY AUTHORITY APPLY? 
A:   If you sign your proxy card, but do not make selections with respect to any
     or all  proposals  submitted  for  vote,  you give  authority  to Donald H.
     Elliott and Stephen W. McKessy to vote on such proposals. A properly signed
     and dated proxy card (or a proxy properly  delivered via  telephone)  gives
     these individuals the authority to vote, in their discretion,  on any other
     matter that may arise at the meeting.

Q:   IS MY VOTE CONFIDENTIAL?
A:   Yes.  Only the  inspectors  of  election,  The Bank of New York and certain
     employees have access to your card. All comments will remain  confidential,
     unless you ask that your name be disclosed.

Q:   WHO WILL COUNT THE VOTES?  
A:   The Bank of New York will  tabulate the votes.  Lance D. Myers and Brian M.
     Nurse of the law firm Cullen and Dykman will act as inspectors of election.



                                      1

<PAGE>



Q:   WHAT IF I GET MORE  THAN ONE  PROXY  CARD? 
A:   Your shares are  probably  registered  differently  or are in more than one
     account. Sign and return all proxy cards to ensure that all your shares are
     voted.  Please have all of your  accounts  registered  in the same name and
     address.  You may do this by contacting our transfer agent, The Bank of New
     York, by calling 1- 800-482-3638.

Q:   WHAT CONSTITUTES A QUORUM?
A:   As of the close of business on March 22, 1999, the Record Date, 142,880,852
     shares of Common  Stock were  issued  and  outstanding.  A majority  of the
     outstanding shares, present or represented by proxy,  constitutes a quorum.
     For purposes of determining the presence of a quorum, shares represented by
     abstentions and "broker non-votes" will be counted as present.  If you vote
     by proxy card or give a proxy by telephone,  you will be considered part of
     the  quorum.  In  the  absence  of a  quorum,  the  Annual  Meeting  may be
     adjourned.

Q:   WHAT  PERCENTAGE  OF  STOCK  DO THE  DIRECTORS  AND  OFFICERS  OWN? 
A:   The directors and certain executive  officers own approximately .08 percent
     of our Common Stock, as of February 26, 1999.

Q:   WHEN ARE THE SHAREHOLDER PROPOSALS DUE FOR THE 2000 ANNUAL MEETING?
A:   Shareholder  proposals  for the 2000  Annual  Meeting  must be  received by
     KeySpan Energy at its offices at One MetroTech Center,  Brooklyn,  New York
     11201-3850,  Attention: Secretary, not less than 120 calendar days prior to
     the  anniversary  date of the release of the Company's  proxy  statement to
     shareholders in connection  with the 1999 Annual Meeting,  to be considered
     by the Company for possible  inclusion in the proxy  materials for the 2000
     Annual Meeting. In addition,  all shareholder  proposals or nominations for
     election as director  for the 2000 Annual  Meeting must be submitted to the
     Company in accordance  with Section 2.7 of the  Company's  By-Laws not less
     than 60 nor more than 90 calendar days in advance of the first  anniversary
     date of the 1999 Annual Meeting.

                                      2

<PAGE>




                                VOTING METHODS


You have the right to revoke  your  proxy any time  before its use at the Annual
Meeting by delivering to the Company (attn: Robert R. Wieczorek, Vice President,
Secretary and Treasurer) a written notice of revocation or a duly executed proxy
bearing a later date or by attending the Annual Meeting and voting in person.  A
proxy given by  telephone  can be revoked by calling the number  listed below in
the telephone proxy instructions and re-entering your voting  instructions or by
either of the methods  described in the preceding  sentence.  Please contact The
Bank of New York, by calling 1-800-482-3638, if you have any questions.

Two methods of voting are available to you:


PROXY CARD VOTING


     1. Mark your selections on the card.

     2. Date and sign your name exactly as it appears on the card.

     3. Return your card in the postage-paid envelope we have provided.


TELEPHONE PROXY - 24 HOURS A DAY, 7 DAYS A WEEK


     1.     Use any  touch-tone  telephone  to give your proxy.  Have your proxy
            card in hand when you call.

     2.     Dial 1-800-574-6864.

     3.     You will be prompted  to enter your  control  number for  telephonic
            proxies found on your proxy card.

     4.     Follow the simple directions.

                                      3

<PAGE>




PROPOSALS

PROPOSAL 1.       ELECTION OF DIRECTORS

THE BOARD OF  DIRECTORS  UNANIMOUSLY  RECOMMENDS A VOTE FOR EACH OF THE FOURTEEN
NOMINEES  NAMED  BELOW TO SERVE  AS  MEMBERS  OF THE  BOARD OF  DIRECTORS  FOR A
ONE-YEAR TERM:

Nominees for election this year are:

            Lilyan H. Affinito
            George Bugliarello
            Robert B. Catell
            Howard R. Curd
            Richard N. Daniel
            Donald H. Elliott
            Alan H. Fishman
            James R. Jones
            Stephen W. McKessy
            Edward D. Miller
            Basil A. Paterson
            James Q. Riordan
            Frederic V. Salerno
            Vincent Tese

Each director has served since May 1998 (except for Ms. Affinito, who has served
since  December  1998) and, if  elected,  will hold office for one year or until
their successors are duly elected or chosen and qualified .

If any  director  is unable to stand for  election,  the Board may provide for a
lesser  number of  directors  or designate a  substitute.  In the latter  event,
shares  represented by proxies may be voted for a substitute  director.  KeySpan
Energy does not  anticipate  that any of the  individuals  listed  above will be
unable  to serve  the full term of  office  to which  they may be  elected.  The
affirmative  vote of a plurality  of the shares of KeySpan  Common Stock cast is
required for the election of directors.

NOMINEES FOR THE BOARD OF DIRECTORS

                    LILYAN H.  AFFINITO - Age 67 Retired  Vice  Chairman  of the
                    Board of Maxxam Group,  Inc.  (formerly  Simplicity  Pattern
                    Co.).  Served as Controller,  Treasurer and Chief  Financial
                    Officer for Maxxam  Group from 1968 to 1976,  President  and
                    Chief Operating Officer from 1976 to 1987, and Director from
                    1972 to 1991.  Serves  on the  Boards of  Caterpiller  Inc.,
                    Jostens Inc. and Kmart Corporation. Also serves on the Board
                    of the Mayo Foundation.

                  GEORGE BUGLIARELLO - Age 71
                  Chancellor of Polytechnic University, since 1994. President of
                  Polytechnic University from 1973 to 1994. Serves on the Boards
                  of  the  Lord  Corporation,   Symbol   Technologies,   Comtech
                  Telecommunications  Corp.,  the  Teagle  Foundation,  the Jura
                  Corp., the Greenwall Foundation and Anser Corporation.

                  ROBERT B. CATELL - Age 62
                  Chairman and Chief Executive Officer of KeySpan Energy since
                  July 1998.  Joined KeySpan Energy's subsidiary, The Brooklyn

                                      4

<PAGE>




                  Union Gas  Company,  in 1958 and was  elected  Assistant  Vice
                  President  in  1974,  Vice  President  in  1977,  Senior  Vice
                  President  in 1981  and  Executive  Vice  President  in  1984.
                  Elected Brooklyn  Union's Chief Operating  Officer in 1986 and
                  President in 1990.  Mr.  Catell  served as President and Chief
                  Executive  Officer  from  1991  to 1996  when  he was  elected
                  Chairman and Chief Executive Officer.  Serves on the Boards of
                  Alberta  Northeast  Gas, Ltd.,  Boundary Gas Inc.,  Taylor Gas
                  Liquids,  Ltd., The Houston Exploration  Company, Gas Research
                  Institute,  Edison Electric  Institute,  New York State Energy
                  Research and  Development  Authority,  Independence  Community
                  Bank Corp., Business Council of New York State, Inc., New York
                  City  Investment  Fund,  New York  City  Partnership  and Long
                  Island Association.

                  HOWARD R. CURD - Age 60
                  Chairman and Chief  Executive  Officer of Uniroyal  Technology
                  Corporation,  since 1992,  a  developer  and  manufacturer  of
                  proprietary   plastic  products  and  specialty  chemical  and
                  polymer  products.  Served as  President  and Chief  Executive
                  Officer of Uniroyal from 1991 to 1992. Formed his own business
                  in  1972  and,  during  the  period  1972  to  1982,  acquired
                  controlling  interests  in a 100-year old  investment  banking
                  firm,  Polycast  Technology  Corporation and the U.S.  Playing
                  Card Corporation.  Serves on the Boards of Emcore  Corporation
                  and Jamesway Corporation.

                  RICHARD N. DANIEL - Age 63
                  Retired  Chairman  and  Chief  Executive  Officer  of  Handy &
                  Harman, a diversified  industrial  manufacturer and the parent
                  company  of a group of  materials  engineering  and  specialty
                  manufacturing  companies.  Joined  Handy & Harman  in 1971 and
                  held  various  officer   positions  from  Vice  President  and
                  Controller to President  and Chairman.  Serves on the Board of
                  the Treasurer's Fund, Inc.

                  DONALD H. ELLIOTT - Age 66
                  Partner in and  previously  counsel to the law firm of Hollyer
                  Brady Smith Troxell  Barrett  Rockett Hines & Mone LLP,  since
                  1995.  Partner in the law firm of Mudge Rose Guthrie Alexander
                  and  Ferdon  from  1991 to  1995.  Partner  in the law firm of
                  Webster & Sheffield from 1973 to 1991. Counsel to the Mayor of
                  New York City and then  Chairman of the New York City Planning
                  Commission  from  1966  to  1973.  Serves  on  the  boards  of
                  Independence Community Bank Corp. and Long Island University.

                  ALAN H. FISHMAN - Age 53
                  Managing Partner at Columbia Financial Partners, LP, a private

                                      5

<PAGE>




                  investment company,  since 1992. Joined Chemical Bank in 1969,
                  named Chief Financial  Officer in 1979 and elected Senior Vice
                  President   responsible  for  worldwide   investment   banking
                  activities in 1983.  Joined Neuberger & Berman in 1988 and was
                  responsible  for an investment  partnership.  Joined  American
                  International  Group,  Inc. in 1989 as a Senior Vice President
                  and elected President of AIG Financial Services Group.  Joined
                  the firm of Adler &  Shaykin  in 1990 as a  Managing  Partner.
                  Also Chairman of Affinity  Technology Group, Inc., Director of
                  Brooklyn  Academy of Music and Executive  Committee  Member of
                  the Brown University Annual Fund.

                  JAMES R. JONES - Age 59
                  Retired President of Warnaco,  Inc. - International  Division.
                  White  House  Staff,   Special   Assistant  and   Appointments
                  Secretary from 1965 to 1969 and Congressman from Oklahoma from
                  1973 to 1987.  Partner in the law firm of Dickstein  Shapiro &
                  Morin from 1987 to 1989.  Chairman and Chief Executive Officer
                  of the American  Stock  Exchange from 1989 to 1993.  Served as
                  United States Ambassador to Mexico from 1993 to 1997.

                  STEPHEN W. McKESSY - Age 61
                  Retired Vice  Chairman of Coopers & Lybrand  L.L.P.  Served in
                  various  officer  positions  at Coopers & Lybrand from 1960 to
                  1997.  Serves as a  director  for the  Greater  Boy  Scouts of
                  America,  the  Board  of  Advisors  of St.  John's  University
                  College of Business Administration,  the Board of Governors of
                  the Silver  Spring  Country Club and the Board of the Sailfish
                  Point Golf Club.

                  EDWARD D. MILLER - Age 58
                  President  and  Chief  Executive   Officer  of  The  Equitable
                  Companies  Incorporated,  since 1997,  and  Chairman and Chief
                  Executive  Officer of The Equitable Life Assurance  Society of
                  the  United  States,   since  1998,  the  principal  insurance
                  subsidiary of The Equitable Companies. Senior Vice Chairman of
                  Chase Manhattan Corporation from 1995 to 1997 and President of
                  Chemical  Bank (which  merged with Chase in 1995) from 1994 to
                  1995 and Vice Chairman from 1991 to 1994.  Serves on the Board
                  of The Equitable Companies and Equitable Life and the Board of
                  Alliance Capital Management Corporation and Donaldson,  Lufkin
                  & Jenrette,  Inc.,  both  Equitable  investment  subsidiaries.
                  Since  1997,  serves  on the  Executive  Committee  of the AXA
                  Group, Equitable's majority shareholder.  Serves on the Boards
                  of the New York Blood  Center,  Pace  University  and  Phoenix
                  House Foundation.


                                      6

<PAGE>




                  BASIL A. PATERSON - Age 72
                  Partner in the law firm of Meyer,  Suozzi,  English and Klein,
                  P.C., since 1992. Served as Secretary of State of the State of
                  New York from 1979 to 1982,  as Deputy Mayor of New York City,
                  as a New York State Senator and as a commissioner  of the Port
                  Authority of New York and New Jersey. Served as a professor at
                  a number of universities,  as a member of the board of editors
                  of the New York Law  Journal  and as a member  of the New York
                  State Commission on Judicial Nominations.

                  JAMES Q. RIORDAN - Age 71
                  Retired  Vice  Chairman and Chief  Financial  Officer of Mobil
                  Corp.  Joined Mobil in 1957 as Tax  Counsel,  named a Director
                  and  Chief  Financial  Officer  in  1969  and  served  as Vice
                  Chairman  from 1986 until his  retirement  from Mobil Corp. in
                  1989.  Joined  Bekaert  Corporation  in  1989  and  served  as
                  President  until his retirement in 1992.  Serves on the Boards
                  of Dow Jones & Co.,  Inc.,  The Houston  Exploration  Company,
                  Public Broadcasting  Service and Tri-Continental  Corporation.
                  Director/Trustee  of the mutual funds in the Seligman Group of
                  investment  companies,  Trustee of the  Brooklyn  Museum and a
                  member of its Committee for Economic  Development and a member
                  of the Policy Council of the Tax Foundation.

                  FREDERIC V. SALERNO - Age 55
                  Senior Executive Vice President and Chief Financial Officer of
                  Bell Atlantic  Corporation,  since 1997. Vice President of the
                  New  York  Telephone  Company  from  1983  to  1985  and  Vice
                  President  and  Chief  Operating  Officer  of the New  England
                  Telephone  Company  from  1985 to 1987.  President  and  Chief
                  Executive  Officer of New York Telephone  Company from 1987 to
                  1991.  Held the  positions of President of Worldwide  Services
                  Group,   Inc.   and  Vice   Chairman,   Finance  and  Business
                  Development  at NYNEX from 1991 to 1997.  Serves on the Boards
                  of AVNET, Inc., The Bear Stearns Companies Inc., Viacom, Inc.,
                  Orange and Rockland Utilities and Manhattan College.

                  VINCENT TESE - Age 56
                  Chairman of Wireless Cable  International,  Inc.,  since 1995.
                  New  York  Superintendent  of  Banks  from  1983 to  1985  and
                  Chairman and Chief Executive  Officer of the Urban Development
                  Corporation   from  1985  to  1994.   Director   of   Economic
                  Development  for New York State  from 1987 to 1994.  Serves on
                  the Boards of The Bear Stearns  Companies  Inc.,  Allied Waste
                  Industries,  Inc.,  Bowne  &  Co.,  Inc.,  Cablevision,  Inc.,
                  Mack-Cali Realty Corporation, New

                                      7

<PAGE>




                    York  University  School  of  Law,  and  the  New  York  and
                    Presbyterian Hospital.




                                      8

<PAGE>




SECURITY OWNERSHIP OF MANAGEMENT

The following table sets forth information as of February 26, 1999, with respect
to the number of shares of Common  Stock  beneficially  owned and  Common  Stock
equivalents credited to each director,  each executive officer of KeySpan Energy
named in the Summary Compensation Table and all directors and executive officers
as a group.  Unless  otherwise  indicated,  each person shown below has the sole
power to vote and the sole power to dispose of the shares of Common Stock listed
as beneficially  owned. The percentage of shares held by any one person,  or all
directors and officers as a group, does not exceed 1% of all outstanding  shares
of KeySpan Energy's Common Stock.

<TABLE>
<CAPTION>

                          Total of Common         
                         Stock Beneficially     Common Stock       
     Name of                   Owned &         Beneficially        Common Stock
 Beneficial Owner           Equivalents           Owned(1)        Equivalents(2)
- ----------------           -----------           --------        --------------
<S>                            <C>               <C>                 <C>   
L.H. Affinito                      344                 0                344
G. Bugliarello                   4,075               880              3,195
R.B. Catell                    301,669           301,387                282
H.R. Curd                        1,896                 0              1,896
R.N. Daniel                      2,209             1,000              1,209
D.H. Elliott                    13,965             1,705             12,260
A.H. Fishman                     9,647             2,925              6,723
J.R. Jones                       1,435               275              1,160
S.W. McKessy                     2,592               393              2,199
E.D. Miller                     12,994             7,271              5,722
B.A. Paterson                    3,624             1,036              2,588
J.Q. Riordan                    12,861             1,500             11,361
F.V. Salerno                     2,887                 0              2,887
V. Tese                          2,887                 0              2,887
C.G. Matthews                  181,146           180,863                282
D.L. Phillips                   37,652            37,647                  5
W.K. Feraudo                    53,972            53,896                 76
A.J. DiBrita                    48,272            48,155                117
W.J. Catacosinos                49,601            49,601                  0
J.T. Flynn                      19,461            19,461                  0
All directors and              935,880           880,543             55,337
 executive officers
 as a group,
 including those
 named above, a
 total of 31
 persons

<FN>

(1)  Includes  shares  issuable  pursuant to options  that are either  currently
     exercisable  or  exercisable  within  60  days of the  date  of this  Proxy
     Statement as follows:  Mr. Catell - 280,000 shares;  Mr. Matthews - 167,000
     shares;  Mr.  Phillips - 37,000 shares;  Mr.  Feraudo - 50,000 shares;  Mr.
     DiBrita - 42,000 shares.

(2)  The term Common Stock Equivalents  refers to units of value which track the
     performance  of Common Stock.  Such units do not possess  voting rights and
     have been issued  pursuant to the  Directors'  Deferred  Compensation  Plan
     (discussed below) or the Company's employee stock savings plan.
</FN>

</TABLE>
                                            9
<PAGE>


SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS

The following table sets forth  information as of December 31, 1998 with respect
to the number of shares of Common  Stock owned by each  person  known by KeySpan
Energy to be the beneficial owner of more than 5% of the Company's Common Stock.


<TABLE>
<CAPTION>
Name and Address of Beneficial Owner      Amount Beneficially Owned     Percent of Class
- ------------------------------------      -------------------------     ----------------
<S>                                       <C>                           <C>

Capital Research and Management Company   12,960,800                    8.2%
333 South Hope Street
Los Angeles, California 90071

</TABLE>


BOARD OF DIRECTORS - COMMITTEES

The Board of  Directors  is  responsible  under  New York law and the  Company's
Certificate  of  Incorporation  and By-Laws  with  overseeing  the  business and
management  of the Company.  The Board of Directors  met seven times between May
28, 1998, the date of the  Combination  and the  acquisition of the  non-nuclear
electric generation and gas distribution  businesses of the Long Island Lighting
Company ("LILCO") (collectively,  the "Transactions") and December 31, 1998. The
Board  maintains  four standing  committees  and,  during 1998,  maintained  one
additional committee.  The function of such committees,  number of meetings held
and composition of such committees are described below:

                                      10

<PAGE>






                                             Committee
                                             ---------

                               Compensation
                                    and                    Corporate
Director        Executive       Nominating      Audit   Responsibility   Special
- --------        ---------       ----------      -----   --------------   -------
L.H. Affinito                                     X             X
G. Bugliarello                                    X             X
R.B. Catell           X (Chair)
H.R. Curd                                         X             X
R.N. Daniel                                       X             X
D.H. Elliott                        X                           X
A.H. Fishman          X                           X (Chair)
J.R. Jones                          X                           X
S.W. McKessy          X                           X
E.D. Miller           X             X (Chair)                                X
B.A. Paterson                       X                           X (Chair)
J.Q. Riordan                                      X
F.V. Salerno          X             X                                        X
V. Tese               X             X                                        X
Meetings held
 from May 28 to       2             3             2             1           17
 December 31,
 1998

X:       Member.
Chair:   Committee Chairperson.



                                   COMMITTEES
                                   ----------

EXECUTIVE:  Power to act on behalf of the Board of Directors  whenever the Board
is not in session  other than with respect to certain  matters as  prescribed by
New York law.

AUDIT:  Reviews auditing,  accounting,  financial reporting and internal control
functions. Recommends independent public accountants and reviews their services.
All members are non-employee directors.

CORPORATE   RESPONSIBILITY:   Responsible  for  ethics,  community  development,
environmental and equal employment opportunity oversight.

COMPENSATION  AND  NOMINATING:   Administers  executive  compensation  programs,
policies and  practices.  Conducts  director  candidate  searches and recommends
directors. All members are non-employee directors. The Committee will not accept
nominations  for election by  shareholders  at the Annual  Meeting,  unless such
nominations  were received  within the time period  prescribed in Section 2.7 of
the Company's By-Laws.

SPECIAL:  Reviewed  the payment by LILCO to its former  officers  of  retirement
benefits,  incentive compensation and benefits pursuant to contracts with LILCO,
including litigation, investigations and other inquiries.

                                      11

<PAGE>




Each of the directors attended 75% or more of all meetings of the Board and each
committee of which he or she was a member during the period from May 28, 1998 to
December  31,  1998 or such  shorter  period  for which he or she  served on the
Board.

DIRECTOR COMPENSATION

The directors receive the following compensation:

            Non-employee directors:

               $25,000 annual retainer,  $1,500 meeting fee (for each meeting of
               the Board of  Directors  and each  meeting of a committee  of the
               Board of Directors attended), $3,000 committee chairman retainer,
               and 500 share annual Common Stock equivalent grant. Reimbursement
               for expenses incurred in attending Board and committee meetings


            Employee directors:

                  Receive no  additional  compensation  other than their  normal
                  salary for serving on the Board or its committees.

The Board of Directors has adopted the Directors' Deferred  Compensation Plan to
directly align the non-employee  directors' financial interest with those of the
shareholders.   The   Directors'   Deferred   Compensation   Plan  requires  all
non-employee  directors  to  defer a  minimum  of 50% of their  compensation  as
directors  in exchange  for Common  Stock  equivalents  as well as 100% of their
annual  Common  Stock  equivalent  grant,  as  referred to above.  Common  Stock
equivalents are valued by reference to the average of the high and low price per
share of KeySpan  Energy's  Common Stock reported on the New York Stock Exchange
Composite  Transactions  on  the  first  trading  day  of  the  calendar  month.
Compensation  not subject to mandatory  deferral into a Common Stock  equivalent
account may, at the director's  option,  be deferred into a cash account bearing
interest at the prime rate. Upon retirement,  death or termination of service as
a director, all amounts in a director's Common Stock equivalent account and cash
account shall,  at the director's  election,  (i) be paid in a lump sum in cash;
(ii) be  deferred  for up to five years;  and/or  (iii) be paid in the number of
annual installments, up to ten, specified by the director.

EXECUTIVE COMPENSATION

SUMMARY COMPENSATION TABLE

The following table presents the annual  compensation paid to or accrued for the
Chief

                                      12

<PAGE>




Executive Officer and the four other most highly compensated executive officers,
as well as  information  for two former  officers  of the  Company  (the  "Named
Executive  Officers").  The information  shown for 1998 represents  compensation
paid by the Company and its  predecessors  for the twelve months ended  December
31,  1998.  Similarly,  the  information  shown  for 1997  and  1996  represents
compensation  paid by the  Company's  predecessors  for the twelve  months ended
December 31, 1997 and 1996, respectively.

<TABLE>
<CAPTION>
                             Annual                         Long-Term
                          Compensation                      Compensation
                          ------------                      ------------
                                                     Shares     LTIP
      Name        Year   Salary   Bonus ($)        Underlying  Payouts  
      ----        ----    ($)     ---------          Options     ($)        All Other Comp ($)
                          ---                        -------     ---        ------------------
                                                                           
<S>               <C>   <C>      <C>                <C>        <C>           <C>

Robert B. Catell  1998  562,917  223,583                  0    274,641(1)       25,673 (2)
Chairman & CEO    1997  465,000  495,690            125,000    358,096(1)       20,520 (2)
                  1996  477,000  248,040            100,000    376,169(1)       14,483 (2)


Craig G. Matthews 1998  372,372  345,842                  0    175,419 (1)      109,520 (2)(3)
President & COO   1997  335,833  297,815             75,000    261,703 (1)        6,204 (2)
                  1996  312,252  160,935             60,000    252,338 (1)        6,143 (2)


David L. Phillips 1998  213,750  148,756                  0          0           54,572 (2)(3)
Senior Vice       1997  206,000  128,132             17,000          0          199,092 (2)(4)
President         1996    N/A      N/A                 N/A         N/A             N/A


William K.        1998  206,167  195,845                  0     18,513           54,810 (2)(3)
Feraudo           1997  174,000  109,272             21,000          0            2,057 (2)
Senior Vice       1996  173,083   60,900             21,000          0            2,020 (2)
President


Anthony J.        1998  206,000  145,559                  0     18,513           67,662 (2)(3)
DiBrita           1997  194,500  103,402             17,000          0            9,470 (2)
Senior Vice       1996  189,420   41,400             17,000          0            7,935 (2)
President


William J.        1998  408,333  600,240               N/A     743,750(6)    39,132,803 (7)(8)(9)
Catacosinos       1997  656,567  841,257               N/A     762,982(6)       400,164 (8)(9)
Former Chairman   1996  580,413  195,170               N/A        N/A            18,663 (8)
and CEO (5)                                                        


James T. Flynn    1998  330,000  109,354               N/A     371,803 (6)     1,027,403 (8)(9)(11)
Former Executive  1997  302,500  408,956               N/A     294,362 (6)     1,816,817 (8)(9)(12)
Vice President    1996  263,365  115,362               N/A        N/A              5,800 (8)
(10)
 
<FN>

FOOTNOTES

(1)  Includes Long-Term  Incentive  Compensation paid by subsidiaries of KeySpan
     Energy.

(2)  Includes the cost of life insurance paid by KeySpan Energy and allocated to
     the named individual for income tax purposes during 1998, 1997 and 1996, as
     follows:  Mr. Catell - $25,673,  $20,520,  $14,483;  Mr. Matthews - $9,520,
     $6,204,  $6,143;  Mr.  Phillips - $1,060,  $292,  $0; Mr. Feraudo - $2,470,
     $2,057, $2,020; and Mr. DiBrita - $10,162, $9,470, $7,935.

(3)  Includes  amounts paid upon election as an officer of the Company in August
     1998, as follows:  Mr.  Matthews - $100,000;  Mr.  Phillips - $53,750;  Mr.
     Feraudo - $56,250 and Mr. DiBrita - $57,500.

(4)  Includes   amounts  paid  upon  accepting   employment   with  KeySpan  and
     reimbursement of relocation expenses in the amount of $50,000 and $148,800,
     respectively.

(5)  Dr. Catacosinos resigned from KeySpan Energy on July 31, 1998.

(6)  Represents   Long-Term   Incentive  Awards  paid  by  LILCO  prior  to  the
     Transactions.

(7)  Includes payments by LILCO in connection with the Transactions, as follows:
     $2,100,000  and  $2,660,000  relating  to a  change  of  control  severance
     agreement and consulting agreement,  respectively,  between Dr. Catacosinos
     and  LILCO;  and  $34,284,986  relating  to a  retirement  benefit  payable
     pursuant to an employment agreement between Dr. Catacosinos and LILCO.

(8)  Includes  the cost of life  insurance  paid by LILCO and  allocated  to the
     named individual for income tax purposes.  The amounts shown for 1998, 1997
     and 1996 were as follows:  Dr. Catacosinos - $36,663,  $23,241 and $18,653;
     Mr. Flynn - $12,018, $8,300 and $5,800.

(9)  Includes  payments by LILCO for accrued  and unused  vacation  for 1998 and
     1997, as follows: Dr. Catacosinos:  $51,154,  $376,923; Mr. Flynn: $25,385,
     $12,058.

(10) Mr. Flynn retired from KeySpan Energy effective January 1, 1999.

(11) Includes  $990,000  paid by  LILCO  in  connection  with  the  Transactions
     pursuant to a change of control severance agreement.

(12) Includes  $1,796,459  paid by LILCO in connection with the termination of a
     supplemental retirement benefit plan.
</FN>
</TABLE>


<PAGE>



COMPENSATION AND NOMINATING COMMITTEE REPORT ON EXECUTIVE COMPENSATION

The  Compensation  and Nominating  Committee (the  "Committee")  of the Board of
Directors,  composed of six  independent,  non-employee  Directors,  administers
KeySpan Energy's executive  compensation  program.  The members of the Committee
are

                                      14

<PAGE>




Donald H. Elliott, James R. Jones, Edward D. Miller, Basil A. Paterson, Frederic
V. Salerno and Vincent  Tese.  None of such members is or has been an officer or
employee of KeySpan Energy or any of its subsidiaries.

The  Committee  was  constituted  by  the  Board  of  Directors   following  the
Combination.  Although the Summary  Compensation Table included elsewhere herein
includes compensation paid or accrued by the Company's  predecessors for periods
prior to the  Combination,  the  following  report  relates  solely to  policies
adopted by the Committee and determinations made with respect to compensation of
the Chief  Executive  Officer and other  executive  officers  subsequent  to the
Combination.

During 1998, the Committee used outside consultants from the Hay Group to review
the  compensation  levels of  KeySpan  Energy's  officers,  including  the named
executive officers, and to provide advice with respect to incentive compensation
plan design. The Committee also reviews,  recommends and approves changes to the
Company's  compensation  policies and programs for the chief executive  officer,
other senior  executives and certain key employees.  In addition,  the Committee
makes  recommendations  concerning the Company's  employee  benefit policies and
exercises such powers and makes such other  compensation-related  determinations
as are entrusted to the  Committee by the Board of  Directors.  After review and
approval by the Committee,  all issues  relating to executive  compensation  are
submitted to the entire Board for ratification. There were no material decisions
of the Committee which were overruled or revised by the Board.

EXECUTIVE COMPENSATION PHILOSOPHY AND POLICIES

The philosophy of KeySpan Energy with respect to executive  compensation is that
the Chief  Executive  Officer  and other  executives  should be  compensated  at
market- competitive levels to attract,  motivate, and retain talented executives
needed to achieve KeySpan  Energy's vision of becoming a premier energy company.
Through  the  Committee,  the  Board  of  Directors  has  developed  a "pay  for
performance" executive  compensation  philosophy and approved the implementation
of a total  compensation  plan designed to focus  attention on KeySpan  Energy's
strategic  business  initiatives  and  financial  performance  objectives.   The
Committee adheres to the following  compensation  policies which are intended to
facilitate the achievement of KeySpan Energy's  business  strategies and further
the Company's vision:

            Executives'  total  compensation   programs  should  strengthen  the
            relationship  between pay and  performance by emphasizing  variable,
            at-risk  compensation that is dependent upon the level of success in
            meeting specified corporate and business group performance goals.

            A significant  amount of compensation for executive  officers should
            be comprised of long-term,  at-risk pay to focus such  executives on
            the long-term interests of shareholders and creating long-term value
            for the shareholders.

                                      15

<PAGE>




            The compensation  program elements for base salary,  annual and long
            term  compensation  should be competitive to the median of executive
            positions of similar scope for the  metropolitan  New York City area
            for  general  industry,  with  an  appropriate  recognition  of both
            current and emerging utility and energy sector practice.  If KeySpan
            Energy's   performance   exceeds  that  of  the  comparable   group,
            compensation  should  be above  the  median;  likewise,  if  KeySpan
            Energy's performance falls below that of the group, the compensation
            paid to  executives  should  be below the  median of the  comparable
            companies.

COMPONENTS OF COMPENSATION

The Committee  compares total  compensation  levels for KeySpan  Energy's senior
executives to the compensation paid to executives in comparable general industry
and utility companies. In this regard, the Committee uses analyses prepared by a
national compensation consultant to review the compensation levels of executives
in the utility industry in the regional and national  marketplace.  In addition,
the Committee reviews  compensation data for executive  positions  comparable in
scope to those in general  industry  companies.  The companies  analyzed in this
process tend to have national  business  operations  and have positions that are
similar in scope with comparable revenue size or employment levels. Through this
process,  the Committee  identifies  the median  compensation  level,  both with
respect to base salary and the overall executive compensation program.

The Committee  strives to ensure that  compensation for the Company's  executive
officers provides a direct link to strategic  financial measures and shareholder
value. To achieve this performance linkage, KeySpan Energy has established three
programs  for the direct  compensation  of executive  officers:  the Base Salary
Program,  the Corporate  Annual  Incentive  Compensation  Plan and the Long-Term
Performance  Incentive  Compensation  Plan.  The intent of these  programs is to
place increased emphasis on  performance-based  pay and reduced emphasis on base
salary in determining total compensation.

Each of the three programs is discussed in greater detail below.

THE BASE SALARY PROGRAM

In  setting  base  salary  levels  for each  executive  officer,  the  Committee
considers the competitive market data for executives in comparable  positions in
other  utility and general  industry  markets.  In setting  base salary  levels,
KeySpan Energy  currently  targets the 50th  percentile of the comparable  labor
market. The Committee also considers the experience level and actual performance
achieved by the executive as it relates to KeySpan  Energy's  corporate goals in
setting such executive's base salary.

When Mr.  Catell was  promoted to and elected as  Chairman  and Chief  Executive
Officer on July 31, 1998,  KeySpan Energy  entered into an employment  agreement
with Mr.

                                      16

<PAGE>




Catell  that  provides  a base  salary of  $700,000  per year,  subject  to such
increases that may be approved by the Board. The base salary level for the Chief
Executive  Officer and other named executive  officers,  compared to competitive
market  data,  is  generally  at or below  the  50th  percentile  of  comparable
positions  at  this  time,  as  the  Company  continues  to  align  base  pay to
competitive  market data.  However,  consistent  with KeySpan  Energy's  ongoing
effort to reduce the emphasis upon base salary,  the  Committee,  and the Board,
have determined that Mr. Catell's base salary not be increased during the annual
1999 merit increase review process.

In addition to base salary, on August 13, 1998, the Committee  approved for each
officer,  other than Mr.  Catell,  a cash  payment of 25% of base  salary,  upon
election as an officer of the Company, with such payment vesting over a one year
period.  The purpose of such award was to encourage  retention of such  officers
following consummation of the Combination.

THE CORPORATE ANNUAL INCENTIVE COMPENSATION PLAN

The Board of Directors adopted the Corporate Annual Incentive  Compensation Plan
(the  "Corporate  Plan") for KeySpan Energy on September 10, 1998. The awards to
be earned  under this plan will be paid as cash based  upon  annual  performance
results.  For 1998, the performance  measurement period included the seven-month
period from June 1, 1998 to December 31,  1998.  The awards for this period were
paid in March 1999 and were based upon results  achieved  during the seven month
period.  The Corporate Plan provides annual incentive awards to officers and all
management employees who, by the nature and scope of their positions,  regularly
and directly make a significant contribution to the success of KeySpan Energy in
the achievement of corporate goals that the Committee  believes are important to
the  shareholders  of  KeySpan  Energy.  The  specific  corporate  goals for the
Corporate  Plan are  established  by management and reviewed and approved by the
Committee  and the  Board of  Directors.  The  goals  are  intended  to  improve
corporate  performance and include  objectives which encourage increase in total
return  to  shareholders,   improved   corporate   earnings  results,   improved
competitive  position,  improved customer  satisfaction and control of operating
expenses.  Incentive  awards as a percentage  of base salary are based upon both
Company and strategic business group performance. The incentive award ranges are
established  annually by the Committee for eligible management  employees in the
Corporate  Plan.  Incentive award levels are intended to provide awards that are
competitive within the industry at target award levels when performance  results
are achieved.

The  Corporate  Plan  approved by the Board of Directors on September  10, 1998,
provides  for award  opportunities  to  executives  which  range  from zero to a
maximum  of 60% of base  salary  at  target  levels  of  performance.  The Chief
Executive  Officer  has a target  award of 60% of base  salary for both 1998 and
1999,  based upon corporate  performance  goals  established for total return to
shareholders  and  consolidated  earnings  per  share.  All  executives  in  the
Corporate Plan have a portion of their incentive award target linked directly to
overall corporate performance goals for total

                                      17

<PAGE>




return to shareholders  and  consolidated  earnings per share and to the results
achieved in their strategic business group.

THE LONG-TERM PERFORMANCE INCENTIVE COMPENSATION PLAN

As a result of the Committee's review of the competitiveness of KeySpan Energy's
total  compensation  program,  and  an  independent  consultant  review  of  the
long-term  incentive  plans  used by a  majority  of  utilities,  the  Committee
recommended,  and the Board of Directors  adopted,  the KeySpan Energy Long-Term
Performance  Incentive  Compensation  Plan (the "Incentive Plan") in March 1999.
The Incentive Plan is subject to approval of the shareholders at the 1999 Annual
Meeting of Shareholders.  The Incentive Plan provides for the award of incentive
stock  options,   nonqualified  stock  options,  performance  stock  awards  and
restricted shares to key employees and non-employee directors and consultants of
KeySpan Energy and its subsidiaries as determined by the Committee.  The purpose
of the  Incentive  Plan is to  optimize  KeySpan  Energy's  performance  through
incentives that directly link the participant's  personal  interests to those of
KeySpan Energy's  shareholders  and to attract and retain  participants who make
significant contributions to the success of KeySpan Energy.

The stock option  component of the Incentive Plan entitles the  participants  to
purchase shares of Common Stock at an exercise price per share determined by the
Committee which is no less than the closing price of the Common Stock on the New
York  Stock  Exchange  on the  date  of the  grant.  Following  adoption  of the
Incentive Plan, the Committee approved an initial annual grant for Mr. Catell of
70,000 nonqualified stock options with three year pro-rata vesting,  and 235,000
nonqualified  stock  options as a retention  grant,  vesting in August 1999,  to
purchase shares of KeySpan Energy's Common Stock at an exercise price of $27.75.

In addition, the Committee approved an award to Mr. Catell in recognition of the
extraordinary  efforts  required  to  accomplish  the  Combination.  This  award
provided for the grant of 111,000  nonqualified stock options,  vesting December
1999, to purchase  shares of KeySpan  Energy's Common Stock at an exercise price
of $29.375.  The  Committee  also awarded Mr. Catell 12,698 Shares of restricted
Common Stock,  which  restrictions  lapse on July 31, 1999. In determining award
size,  the Committee  considered  the level of effort  required by Mr. Catell to
achieve the successful Combination,  and the overall total compensation provided
by base salary,  annual awards and long-term  compensation  to target the median
level of total compensation for comparable  executive positions in the merger of
shareholder-owned utilities and gas companies nationwide.

Subject to shareholder approval of the Incentive Plan, an aggregate of 1,676,000
nonqualified  stock options and 12,698  shares of  restricted  Common Stock have
been  granted to the  executive  officers as a group.  These  initial  grants of
nonqualified  stock options and restricted  Common Stock were made to executives
generally  determined on the basis of the  executive's  position  within KeySpan
Energy and the level of such

                                      18

<PAGE>




executive's base salary.

Under applicable  accounting  requirements,  KeySpan Energy could be required to
incur a non-cash  charge to  earnings  in 1999 if the fair  market  value of the
Common Stock exceeds the exercise price of previously granted nonqualified stock
options on the date shareholder  approval of the Incentive Plan is obtained.  In
such event, the Committee may consider replacing  previously-issued  awards with
new awards,  which may be in greater amounts, or otherwise have different terms,
in order to compensate  recipients of awards for any loss in value  attributable
to the replacement awards.

The  Committee  believes  that  stock  options  are  directly  linked to KeySpan
Energy's performance. As the value of KeySpan Energy's Common Stock is generally
considered  the  strongest  indicator of overall  corporate  performance,  stock
option awards allow  executives to benefit by  appreciation in stock price at no
direct cost to KeySpan Energy and provide a strong  incentive to participants by
linking compensation to the future value of KeySpan Energy's Common Stock.

POLICY WITH RESPECT TO SECTION 162(M) DEDUCTION LIMIT

Under  Section  162(m) of the  Internal  Revenue  Code of 1986,  as amended (the
"Code"),  the Company cannot deduct compensation in excess of $1,000,000 paid in
any year to the chief  executive  officer or any of the four  other most  highly
compensated  executive officers whose compensation must be detailed in the proxy
statement.  Certain  benefit  plans and  compensation  paid under plans that are
performance-based  is not  subject  to the  $1,000,000  annual  limit if certain
requirements  are  satisfied.  Although  the  Company's  compensation  policy is
generally  designed to relate  compensation to performance,  certain payments do
not  meet  such  requirement  because  they  allow  the  Committee  to  exercise
discretion in setting  compensation.  The Committee is of the opinion that it is
in the Company's  best interest for the Committee to retain  discretion in order
to preserve  flexibility in compensating such executive officers,  especially in
light of an increasingly competitive marketplace.

CONCLUSION

The Committee believes that KeySpan Energy's executive compensation policies and
programs  serve  both the  interests  of  KeySpan  Energy  and its  shareholders
effectively.  The various  compensation  programs are appropriately  balanced to
provide the motivation for executives to contribute to KeySpan  Energy's overall
success and enhance the value of KeySpan Energy for the shareholders' benefit.

The Committee  will continue to monitor the  effectiveness  of KeySpan  Energy's
total  compensation  program to meet the current and the future needs of KeySpan
Energy.


                                      19

<PAGE>
                              COMPENSATION AND NOMINATING COMMITTEE

                                          Edward D. Miller, Chairman
                                          Donald H. Elliott
                                          James R. Jones
                                          Basil A. Paterson
                                          Frederic V. Salerno
                                          Vincent Tese


PERFORMANCE GRAPH

The  following  table  presents,  for the period  beginning May 28, 1998 through
December 31, 1998, a comparison  of  cumulative  total  shareholder  returns for
KeySpan Energy,  the Standard & Poor's Utilities Index and the Standard & Poor's
500 Index.



                              May 28, 1998            December 31, 1998
                              ------------            -----------------
     KeySpan Energy                 $100.00                 $  93.99
     S&P Utilities Index            $100.00                 $ 108.57
     S&P 500 Index                  $100.00                 $ 113.65

Assumes $100 invested on May 28, 1998 in shares of KeySpan  Energy Common Stock,
the S&P  Utilities  Index and the S&P 500  Index,  and that all  dividends  were
reinvested.

COMPENSATION UNDER RETIREMENT PLANS

The  Company's  Retirement  Plan  provides  retirement  benefits  based upon the
individual  participant's years of service and final average annual compensation
(as  defined  below).  The  following  table  sets  forth the  estimated  annual
retirement   benefits   (exclusive  of  Social  Security  payments)  payable  to
participants  in the specified  compensation  and  years-of-service  categories,
assuming  continued  active  service  until normal  retirement  age and that the
Company's Retirement Plan is in effect at such time.

                                      20

<PAGE>






<TABLE>
<CAPTION>

                                            Years of Service
                -------------------------------------------------------------------------
Remuneration       20           25           30           35           40           45
- ------------    ---------    ---------    ---------    ---------    ---------    --------
<S>              <C>          <C>          <C>          <C>          <C>         <C>     

$200,000. . . .   $60,000      $75,000      $90,000     $105,000     $120,000    $135,000
$250,000. . . .   $75,000      $93,750     $112,500     $131,250     $150,000    $168,750
$300,000. . . .   $90,000     $112,500     $135,000     $157,500     $180,000    $202,500
$350,000. . . .  $105,000     $131,250     $157,500     $183,750     $210,000    $236,250
$400,000. . . .  $120,000     $150,000     $180,000     $210,000     $240,000    $270,000
$450,000. . . .  $135,000     $168,750     $202,500     $236,250     $270,000    $303,750
$500,000. . . .  $150,000     $187,500     $225,000     $262,500     $300,000    $337,500
$550,000. . . .  $165,000     $206,250     $247,500     $288,750     $330,000    $371,250
$600,000. . . .  $180,000     $225,000     $270,000     $315,000     $360,000    $405,000
$650,000. . . .  $195,000     $243,750     $292,500     $341,250     $390,000    $438,750
$700,000. . . .  $210,000     $262,500     $315,000     $367,500     $420,000    $472,500
$750,000. . . .  $225,000     $281,000     $337,500     $393,750     $450,000    $506,250
$800,000. . . .  $240,000     $299,500     $360,000     $420,000     $480,000    $540,000
$850,000. . . .  $255,000     $318,000     $382,500     $446,250     $510,000    $573,750
$900,000. . . .  $270,000     $336,500     $405,000     $472,500     $540,000    $607,500
$950,000. . . .  $285,000     $355,000     $427,500     $498,750     $570,000    $641,250

- ---------------
</TABLE>

For purposes of the Retirement  Plan, the final average annual  compensation  is
the average  annual  compensation  for the  highest  five  consecutive  years of
earnings  during the last ten years of credited  service.  The annual salary and
bonus for the current year for the Named Executive  Officers is indicated in the
Annual Compensation column of the Summary Compensation Table.

The number of years of credited service for the Chief Executive  Officer and the
four other highest paid  executive  officers  currently  employed by the Company
based on continued  service to age 65, normal  retirement  age, will be for R.B.
Catell (44 years), C.G. Matthews (42 years), D.L. Phillips (24 years), W.K.
Feraudo (45 years), and A.J. DiBrita (43 years).

The Code limits the annual  compensation  taken into  consideration  for and the
maximum annual retirement  benefits payable to a participant under the Company's
Retirement   Plan.   For  1998,   these  limits  were   $160,000  and  $130,000,
respectively.  Annual retirement  benefits  attributable to amounts in excess of
these limits are provided under the Company's  Supplemental  Employee Retirement
Plan ("SERP") and not under the Company's Retirement Plan.


AGREEMENTS WITH EXECUTIVES

EMPLOYMENT AGREEMENTS

On September 10, 1998, KeySpan Energy entered into an employment  agreement with
Mr. Catell relating to his services as Chairman and Chief Executive Officer. The
agreement covers the period beginning July 31, 1998 and ending July 31, 2003. In
addition to base salary,  annual and long-term incentive  compensation and other
employee  benefits,  Mr. Catell's  employment  agreement  provides for severance
benefits to be paid to him in the event his  employment is terminated by KeySpan
Energy without cause or if Mr. Catell terminates his employment for good reason.
The severance benefits to be provided during the severance period would include:
(a) payment to Mr.  Catell in a single  lump sum of (i) all accrued  obligations
and (ii) the aggregate amount of salary and annual incentive  compensation  that
he  would  have  received  had  he  remained  employed  through  the  end of the
employment  period;  (b) continued  accrual of SERP benefits (as provided in the
agreement) during the severance period; and (c) continuation

                                      21

<PAGE>




of all other  employment  benefits,  as if he had  remained  employed by KeySpan
Energy during the severance  period.  If Mr. Catell  voluntarily  terminates his
employment,  other  than for good  reason,  the  Company  shall pay the  accrued
obligations  to Mr. Catell and he shall be entitled to  supplemental  retirement
benefits.  If Mr. Catell's employment is terminated due to a "change of control"
of KeySpan Energy (as defined in the agreement), the severance period is defined
to  mean  the  period  from  the  date  of  termination  through  the end of the
employment  period,  or,  if  longer,  the  third  anniversary  of the  date  of
termination.  In the  event of a change of  control,  Mr.  Catell  may elect the
benefits  as provided  under his  agreement,  or elect the  benefits as provided
under the Senior  Executive  Change of Control  Severance  Plan (the  "Change of
Control  Plan"),  described  below,  in lieu  of the  benefits  provided  by his
agreement.

KeySpan  Energy  also is  party to an  employment  agreement  with Mr.  Phillips
relating to his services as Senior Vice  President.  The agreement was effective
January 1, 1997 and has an initial  term of three  years,  after  which it shall
extend for successive  one-year renewal terms unless  terminated by either party
upon six months'  prior written  notice.  In addition to the amounts paid to Mr.
Phillips  upon  assuming  employment,  as reflected in the Summary  Compensation
Table, the agreement  provides for Mr. Phillips to receive a minimum base salary
of $206,000  each year,  annual and  long-term  incentive  compensation  and all
employee  benefits  provided to other  senior  executives  of the  Company.  The
agreement also contains provisions concerning noncompetition and confidentiality
applicable to Mr.  Phillips  following  termination of his  employment  with the
Company.


SENIOR EXECUTIVE CHANGE OF CONTROL SEVERANCE PLAN

In October 1998,  the Board of Directors  approved the Change of Control Plan in
which Messrs. Catell, Matthews,  Phillips,  Feraudo, DiBrita and 28 other senior
executives are participants. The Change of Control Plan provides for the payment
of severance and other  benefits upon certain  qualifying  terminations  of such
executives  within  three (3) years of a "change of control of the  Company" (as
defined in the Change of Control Plan). The benefits payable under the Change of
Control Plan generally provide for (i) the payment of the sum of the executive's
base salary,  incentive compensation and compensation previously deferred by the
executive,  all through the date of  termination;  (ii) the payment of an amount
equal to three times an executive's  base salary and incentive  compensation for
the Chief  Executive  Officer,  President  and Chief  Operating  Officer and all
Senior Vice  Presidents and two times an  executive's  base salary and incentive
compensation  for Vice  Presidents of the Company;  (iii) the payment of amounts
under retirement  plans; and (iv) the continuation of certain other benefits for
a period of two to three years  depending on the  executive's  position with the
Company.  The Change of Control Plan expires  October 30, 2003,  unless extended
for an additional period by the Board of Directors;  provided,  that following a
"change of control," the Change of Control Plan shall  continue  until after all
the  executives  who  become  entitled  to any  payments  thereunder  shall have
received such payments in full.

The Change of Control  Plan  supersedes  any and all prior  severance  plans and
agreements  between  or binding  the  Company or any  predecessor  thereof  with
respect to a change of control that occurred prior to October 1998,  except that
in certain  circumstances some of the executives may be able to elect to receive
payments and benefits provided pursuant to a prior agreement or plan rather than
the payments and benefits provided under the Change of Control Plan.


PROPOSAL 2. RATIFICATION OF ARTHUR ANDERSEN LLP AS INDEPENDENT PUBLIC
            ACCOUNTANTS

In accordance  with the  recommendations  of its Audit  Committee,  the Board of
Directors recommends that the shareholders ratify the appointment of the firm of
Arthur Andersen LLP ("Arthur  Andersen"),  independent  public  accountants,  to
audit the books, records and accounts of KeySpan Energy and its subsidiaries for
the fiscal year ending December 31, 1999.

On  September  10,  1998,  the  Board  of  Directors  of  KeySpan   Energy,   on
recommendation  of its Audit  Committee,  named Arthur  Andersen as  independent
public  accountants for KeySpan Energy's  nine-month  period ending December 31,
1998.  Arthur  Andersen  were  independent  public  accountants  for KSE and The
Brooklyn Union Gas Company ("Brooklyn  Union"),  and Ernst & Young LLP ("Ernst &
Young") were independent public accountants for LILCO, during such corporations'
respective fiscal years prior to consummation of the Combination.

During  the past two  fiscal  years,  there has been no report on the  financial
statements of KSE and

                                      22

<PAGE>




Brooklyn Union by Arthur Andersen or of LILCO by Ernst & Young,  which contained
an adverse  opinion or a disclaimer of opinion,  or was qualified or modified as
to  uncertainty,  audit scope,  or  accounting  principles.  During the past two
fiscal years and the interim period through  September 10, 1998, there have been
no  disagreements  with  Arthur  Andersen  or  Ernst & Young  on any  matter  of
accounting  principles or practices,  financial statement disclosure or auditing
scope or  procedure,  which,  if not  resolved  to the  satisfaction  of  Arthur
Andersen  or Ernst & Young,  would  have  caused  either  of such  firms to make
reference to the subject  matter of such  disagreements  in connection  with its
report.

Arthur  Andersen  representatives  have direct access to the Audit Committee and
regularly  attend the Committee's  meetings.  An Arthur Andersen  representative
will attend the Annual Meeting to answer shareholder questions and will have the
opportunity to make a statement if he or she desires to do so.

The affirmative  vote of a majority of the votes cast at the meeting is required
for approval of this proposal.

    THE BOARD OF DIRECTORS UNANIMOUSLY RECOMMENDS A VOTE FOR THIS PROPOSAL.


PROPOSAL 3. CORPORATE NAME CHANGE

In the fall of 1998, based on research that showed strong customer acceptance of
the KeySpan brand name, it was determined  that the Company  should  continue to
employ the brand building strategy  implemented by KSE prior to the consummation
of the Combination.  As a result, at such time the Board of Directors authorized
the Company to conduct its business under the assumed name "KeySpan  Energy" and
to adopt the  symbol  "KSE" as its  trading  symbol on the New York and  Pacific
Stock Exchanges.

The Company now wishes to formally  adopt the "KeySpan"  name as it continues to
integrate  its  operations   and  enhance  the  value  of  such   operations  to
shareholders.  In  furtherance of these  objectives,  the Board of Directors has
authorized  and  shareholders  are  requested  to  approve an  amendment  to the
Company's  Certificate  of  Incorporation  to change  its name  from  MarketSpan
Corporation to KeySpan Corporation.  Accordingly,  the following resolution will
be offered at the Annual Meeting:

            RESOLVED,  That  the  Certificate  of  Incorporation  of  MarketSpan
     Corporation  d/b/a  KeySpan  Energy be  amended  to read  substantially  as
     follows and that the Board of Directors be authorized  and directed to take
     all steps  necessary to amend the  Certificate of  Incorporation  as may be
     required by the laws of the State of New York:

                                  "Article I

                                     Name

          The name of the corporation shall be KeySpan Corporation."

The affirmative vote of a majority of the outstanding shares of KeySpan Energy's
Common Stock is required for approval of this proposal.

    THE BOARD OF DIRECTORS UNANIMOUSLY RECOMMENDS A VOTE FOR THIS PROPOSAL.


PROPOSAL 4. EMPLOYEE DISCOUNT STOCK PURCHASE PLAN

In May 1998, the Board of Directors adopted the Employee Discount Stock Purchase
Plan (the "Plan"),  which is intended to encourage ownership of KeySpan Energy's
Common  Stock by  eligible  employees  of  KeySpan  Energy  or its  wholly-owned
subsidiaries  by  providing a  convenient  and  systematic  method for  employee
acquisition.  The Board has  authorized  the issuance of up to 750,000 shares of
Common Stock and requests that KeySpan  Energy's  shareholders  approve the Plan
and authorize the issuance of such shares under the Plan.

                                      23

<PAGE>




The Plan  provides  that  eligible  employees  may  purchase  Common  Stock each
calendar  month  at 95% of the  average  of the high and low  sales  price  (the
"Purchase  Price") for such shares on the last day of the month on which  shares
are traded on the New York Stock Exchange.  Generally,  all of the approximately
7,100 employees of KeySpan Energy or its wholly-owned  subsidiaries are eligible
to participate in the Plan except (i) employees who have not been on the payroll
for at least  three  months  as of the  beginning  of a  purchase  period;  (ii)
employees  who  customarily  are employed  less than five months in any calendar
year;  (iii) part-time  employees;  (iv) Directors who are not also employees of
KeySpan Energy; and (v) employees of KeySpan Energy's wholly-owned  subsidiaries
(or similar entities) which entities have not been approved by KeySpan Energy as
eligible to participate in the Plan.

Employees  will be able to purchase  shares  either by payroll  deduction  or by
making lump sum payments or both. In any one month  purchase  period,  the total
payments by an employee to purchase  shares,  including both payroll  deductions
and lump sum  payments,  cannot exceed 20% of his or her salary at the beginning
of such  period.  Moreover,  the fair  market  value of shares  purchased  by an
employee under the Plan,  during any calendar year,  cannot exceed $25,000,  nor
may any employee  purchase  shares if the purchase would cause him/her to own 5%
or more of the  total  combined  voting  power or value of all  shares of Common
Stock of KeySpan Energy.

Employees may also sell any or all of their shares  acquired under the Plan at a
price based on the weighted average of all shares sold by the Plan Administrator
during a given selling period, adjusted to exclude brokerage commissions.

The Board of Directors will have the right,  without  shareholder  approval,  to
suspend,  terminate or modify the Plan. In the event shareholders do not vote to
approve the Plan, the Plan will not be qualified under current Code regulations,
and employees  will be taxed on the  difference  between the market price of the
Common Stock and the discounted purchase price.

The proceeds  received by KeySpan Energy from  purchases  under the Plan will be
used for general  corporate  purposes or for the  purchase of shares on the open
market on behalf of a participant.

On February  26, 1999,  the closing  price of KeySpan  Energy's  Common Stock as
reported on the NYSE listing of composite transactions was $26.50 per share.

The  following  resolution  will be proposed  for approval by holders of KeySpan
Energy's Common Stock:

            RESOLVED,  that the Employee  Discount  Stock  Purchase Plan and the
     issuance of shares thereunder is hereby approved, ratified and confirmed.

The affirmative  vote of a majority of the votes cast at the meeting is required
for approval of this proposal.

    THE BOARD OF DIRECTORS UNANIMOUSLY RECOMMENDS A VOTE FOR THIS PROPOSAL.


PROPOSAL 5. LONG-TERM PERFORMANCE INCENTIVE
            COMPENSATION PLAN

THE COMPANY'S LONG-TERM PERFORMANCE
INCENTIVE COMPENSATION PLAN

TERMS OF THE PLAN

In March 1999,  the Board of  Directors  of KeySpan  Energy  adopted the KeySpan
Energy Long-Term Performance Incentive  Compensation Plan (the "Plan"),  subject
to  shareholder  approval  prior to  December  31,  1999.  The Plan will  become
effective on the date of its approval by the shareholders.  The Plan is intended
to promote the interests of KeySpan  Energy and its  shareholders  by attracting
and retaining key employees, directors and

                                      24

<PAGE>





consultants of KeySpan Energy and its  subsidiaries,  motivating such persons by
means of performance-related incentives to achieve long-range performance goals,
and enabling such persons to participate  in the long-term  growth and financial
success  of  KeySpan  Energy.  The Plan will be  administered  by the  Committee
consisting  solely of directors who are  "non-employee  directors" as defined in
Rule 16b-3 under the Exchange Act and "outside  directors" as defined in Section
162(m) of the Code.

The Plan  provides  for the  granting of four types of awards on a stand  alone,
combination  or tandem  basis,  specifically,  stock  options,  incentive  stock
options,  restricted shares and performance stock awards. The Plan provides that
the total  number of shares of Common  Stock with respect to which awards may be
granted  under the Plan may not  exceed  10,500,000  shares,  and that the total
number of shares of Common Stock with respect to which stock options  (including
incentive stock options) and performance  stock awards may be granted in any one
year to any individual  participant may not exceed 750,000 shares  (subject,  in
each  case,  to  adjustment  in the  event  of a stock  split,  stock  dividend,
combination   or   exchange   of   shares,   exchange   for  other   securities,
reclassification,    reorganization,   redesignation,   merger,   consolidation,
recapitalization,  or other such change).  As of the date hereof,  approximately
2,500  persons  are  eligible  to  participate  in  the  Plan.  No  payments  or
contributions are required to be made by the persons who participate in the Plan
other than the payment of any purchase price upon the exercise of a stock option
and any payment required by the Committee with respect to an award of restricted
shares.

A stock option award grants the recipient the right to buy a specified number of
shares of Common Stock at a fixed  exercise  price during a specified  time, and
subject to such other terms and conditions,  all as the Committee may determine;
provided that the exercise price of any stock option shall not be less than 100%
of the fair market  value of the Common Stock on the date of grant of the award.
An incentive stock option award granted  pursuant to the Plan is an award in the
form of a stock option which  complies with the  requirements  of Section 422 of
the Code or any  successor  Section as it may be amended from time to time.  All
other stock option awards granted under the Plan are nonqualified stock options.
The  exercise  price of all stock option  awards  under the Plan is payable,  as
determined by the Committee, in cash, in shares of already owned Common Stock of
KeySpan Energy,  in any  combination of cash and shares,  or by any other method
deemed  appropriate  by the  Committee.  Each option  grant may be  exercised in
whole,  at any  time,  or in part,  from time to time,  after the grant  becomes
exercisable.

A grant of  restricted  shares  pursuant  to the Plan is a transfer of shares of
Common Stock, for such consideration and subject to such  restrictions,  if any,
on transfer or other  incidents  of  ownership,  for such periods of time as the
Committee may determine.  The certificates  representing  the restricted  shares
shall be held by KeySpan  Energy as escrow agent until the end of the applicable
period of  restriction,  during  which  the  shares  may not be sold,  assigned,
transferred,  pledged, exchanged, encumbered or disposed of. However, during the
period of  restriction,  the recipient of restricted  shares will be entitled to
vote the restricted shares and to retain cash dividends paid thereon.

A  performance  stock  award is a right  granted  to a  participant  to  receive
restricted  shares  that are not  issued  to the  participant  until  after  the
satisfaction of the performance goals during a performance period. A performance
stock award is earned by the  participant  over a time period  determined by the
Committee on the basis of performance  goals established by the Committee at the
time of grant.  Performance  goals  established by the Committee may be based on
one or more of the following criteria: earnings or earnings growth; earnings per
share;  return on equity,  assets,  capital employed or investment;  revenues or
revenue growth; gross profit; gross margin;  operating profit; operating margin;
operating cash flow; stock price  appreciation and total shareholder  return. If
the performance goals set by the Committee are not met, no restricted shares may
be issued pursuant to the performance stock award.

In the event of a change of control of KeySpan Energy, the following shall occur
with  respect  to any and all awards  outstanding:  (i)  automatic  lapse of all
restrictions and acceleration of any time periods relating to the

                                      25

<PAGE>





exercise or vesting of stock options and restricted shares so that awards become
immediately  exercisable or vested;  and automatic  satisfaction  of performance
goals on a pro rata or other basis set forth in the award agreement with respect
to the number of restricted  shares  issuable  pursuant to a  performance  stock
award so that such pro rata or other portion of such  restricted  shares becomes
immediately vested and (ii) all awards become non-cancelable.

Except as otherwise  provided in the Plan, the Board may at any time  terminate,
and, from time to time,  amend or modify the Plan.  Any such action of the Board
may be taken without the approval of KeySpan Energy's shareholders,  but only to
the extent that such  shareholder  approval is not required by applicable law or
regulation.  Furthermore, no amendment, modification, or termination of the Plan
shall adversely  affect any awards already granted to a participant  without his
or her  consent.  No  amendment  or  modification  of the  Plan may  change  any
performance  goal,  or increase the benefits  payable for the  achievement  of a
performance goal, once established for a performance stock award.

GRANTS UNDER THE PLAN

Following adoption of the Plan by the Board of Directors, the Committee approved
the  following  grants  of stock  options  under  the  Plan to  Named  Executive
Officers:


Name                           Number of Options        Exercise Price Per Share
- ------------------------    ------------------------    ------------------------

Robert B. Catell            305,000                     27.75
                            111,000                     29.375
Craig G. Matthews           220,000                     27.75
William K. Feraudo          101,000                     27.75
Anthony J. DiBrita          101,000                     27.75
David L. Phillips           101,000                     27.75
Executive Officers          1,676,000                   see below

Options to purchase  1,292,000  shares,  described in the foregoing table, at an
exercise price of $27.75 will become exercisable in August 1999, with options to
purchase an additional  86,000 shares  becoming  exercisable in each of 2000 and
2001.  Options to  purchase  89,666 and 111,000  shares at an exercise  price of
$29.375 will become exercisable in October 1999 and December 1999, respectively,
with options to purchase an additional 5,667 shares becoming exercisable in each
of October 2000 and 2001.  The  Committee  also  approved an aggregate  grant of
929,000 stock options to the Executive  Officers at an exercise  price per share
equal to the closing price of KeySpan Energy's Common Stock on the date the Plan
is approved by  shareholders.  These  options  vest  rateably  over a three-year
period from such date.  Awards of such options to the Named  Executive  Officers
were made as  follows:  Mr.  Catell - 280,000  options;  Mr.  Matthews - 135,000
options;  Mr. Feraudo - 45,000 options;  Mr. DiBrita - 45,000  options;  and Mr.
Phillips - 45,000 options.

In addition to the stock  options  granted,  as set forth above,  the  Committee
approved  the grant of 12,698  restricted  shares to Mr.  Catell.  Except as set
forth above, no other awards have been granted under the Plan, and the grants of
all of the above  awards are subject to  shareholder  approval of the Plan.  The
benefits accruing pursuant to the above awards are not presently determinable.

FEDERAL INCOME TAX CONSEQUENCES OF GRANTS UNDER THE PLAN

The  following   discussion   generally   summarizes   the  Federal  income  tax
consequences to participants who may receive grants of awards under the Plan.

                                      26

<PAGE>






STOCK  OPTIONS.  For Federal  income tax purposes,  no income is recognized by a
participant  upon the grant of a stock option under the Plan.  Upon the exercise
of an option, however,  compensation taxable as ordinary income will be realized
by the  participant in an amount equal to the excess of the fair market value of
a share of KeySpan  Energy's  Common Stock on the date of such exercise over the
exercise price. A subsequent sale or exchange of such shares will result in gain
or loss measured by the difference between (i) the exercise price,  increased by
any compensation  reported upon the  participant's  exercise of the option,  and
(ii) the amount  realized  on such sale or  exchange.  Such gain or loss will be
capital  in  nature  if the  shares  were  held as a  capital  asset and will be
long-term if such shares were held for more than one year.

The Company  generally is entitled to a deduction  (subject to the provisions of
Section 162(m) of the Code) for  compensation  paid to a participant at the same
time and in the same amount as the  participant  is  considered to have realized
compensation by reason of the exercise of an option.

INCENTIVE  STOCK  OPTIONS.  No  taxable  income  generally  is  realized  by the
participant  for Federal  income tax  purposes  upon the grant or exercise of an
incentive stock option. If shares of KeySpan Energy's Common Stock are issued to
a  participant  pursuant to the  exercise of an incentive  stock option  granted
under the Plan,  and if no  disqualifying  disposition of such shares is made by
such  participant  within  two years  after the date of grant or within one year
after the transfer of such shares to a  participant,  then (a) upon sale of such
shares,  any amount realized in excess of the option price will be taxed to such
participant  as a  long-term  capital  gain  and any  loss  sustained  will be a
long-term  capital loss, and (b) no deduction will be allowed KeySpan Energy for
Federal  income tax purposes.  Upon exercise of an incentive  stock option,  the
participant  may be subject to  alternative  minimum tax on certain items of tax
preference.

If shares of KeySpan  Energy's  Common  Stock  acquired  upon the exercise of an
incentive  stock  option  are  disposed  of  prior  to  the  expiration  of  the
two-years-from-grant/one-year-from-transfer  holding  period,  generally (a) the
participant  will  realize  ordinary  income in the year of  disposition  in the
amount  equal to the excess (if any) of the fair  market  value of the shares at
exercise (or, if less,  the amount  realized on the  disposition  of the shares)
over the option price thereof, and (b) KeySpan Energy will be entitled to deduct
such  amount  (subject to the  provisions  of Section  162(m) of the Code).  Any
further gain or loss realized will be taxed as capital gain or loss,  which will
be  long-term or  short-term  depending on whether the shares were held for more
than one year, and will not result in any deduction by KeySpan Energy.

If an incentive stock option is exercised at a time when it no longer  qualifies
as an incentive  stock  option,  the option is treated as a  nonqualified  stock
option.

RESTRICTED  SHARES;  PERFORMANCE  STOCK  AWARDS.  Awards  of  restricted  shares
generally  will not result in taxable  income to the employee for Federal income
tax purposes at the time of grant.  A recipient of restricted  shares  generally
will receive compensation subject to tax at ordinary income rates on the excess,
if any, of the fair market  value of KeySpan  Energy's  Common Stock at the time
the restricted  shares are no longer subject to forfeiture  over the amount,  if
any, paid for the shares. However, a recipient who so elects under Section 83(b)
of the Code within 30 days of the date of the grant will have  ordinary  taxable
income  on the  date  of the  grant  equal  to the  amount  of any  such  excess
determined as if such shares were unrestricted and could be sold immediately. If
the restricted shares subject to such election are forfeited, the recipient will
not be entitled to any  deduction,  refund or loss for tax purposes with respect
to the amount included in taxable income as a result of the election.  Upon sale
of the restricted  shares after the forfeiture  period has expired,  the holding
period to determine  whether the recipient  has long-term or short-term  capital
gain or loss begins when the  restriction  period expires and the tax basis will
be equal to the fair  market  value  of the  restricted  shares  on the date the
restriction period expires.  However, if the recipient timely elects to be taxed
as of the date of the grant,  the holding  period  commences  on the date of the
grant and the tax basis will be equal to the fair market value of the restricted
shares on the date of the grant as if such  shares  were then  unrestricted  and
could be sold immediately.

                                      27

<PAGE>






The award of a  performance  stock  award  generally  will not result in taxable
income to the employee for Federal  income tax purposes at the time of grant.  A
recipient of a performance  stock award  generally will be subject to tax at the
same time and in the same  manner as  applicable  to  recipients  of  restricted
shares as described above.

The Company is generally  entitled to a deduction  (subject to the provisions of
Section 162(m) of the Code) for  compensation  paid to a participant in the same
amount as the  participant  is  considered to have  realized  compensation  with
respect to restricted shares or a performance stock award.

LIMITS ON DEDUCTIONS.  Under Section 162(m) of the Code, the deduction allowable
to the Company in a taxable year for  compensation  paid to the Chief  Executive
Officer and the four other most highly paid executive officers of KeySpan Energy
(including its  subsidiaries)  is limited to $1,000,000 per person,  except that
compensation  that  is  performance-based  will  be  excluded  for  purposes  of
calculating  the amount of compensation  subject to this $1,000,000  limitation.
The ability of KeySpan Energy to claim a deduction for compensation  paid to any
other person is not affected by this provision.

The Company has structured the Plan so that any  compensation  for which KeySpan
Energy may claim a deduction in  connection  with the  exercise of  nonqualified
stock  options,  the  disposition  by an  optionee of shares  acquired  upon the
exercise of incentive  stock options and the lapse of restrictions on restricted
shares  received  pursuant  to  performance  stock  awards  is  intended  to  be
performance-based  within the meaning of Section  162(m) of the Code.  All other
awards under the Plan are not  performance-based,  and  therefore  any deduction
KeySpan  Energy may claim with respect to such awards made to the persons listed
above will be subject to the limitations on  deductibility  in Section 162(m) of
the Code.

Information  contained  herein relating to the Plan is qualified in its entirety
by reference to such plan, which is attached to this Proxy Statement as Appendix
A.

The  following  resolution  will be proposed  for approval by holders of KeySpan
Energy's Common Stock:


               RESOLVED, that the KeySpan Energy Long-Term Performance Incentive
          Compensation Plan is hereby approved, ratified and confirmed.


The affirmative  vote of a majority of the votes cast at the meeting is required
for approval of this proposal.


THE BOARD OF DIRECTORS RECOMMENDS A VOTE "FOR" APPROVAL OF THIS PROPOSAL.


TRANSACTIONS WITH MANAGEMENT AND OTHERS

LEGAL SERVICES

Frederick  M.  Lowther  was  appointed  General  Counsel  of  KeySpan  Energy on
September  10,  1998 and is also a member of the law firm of  Dickstein  Shapiro
Morin & Oshinsky LLP.  During 1998,  this firm  represented  KeySpan Energy in a
variety of matters. The total fees paid to this firm during 1998 (including fees
attributable to Mr.  Lowther's  service as General  Counsel) were  approximately
$1,300,000.  Mr.  Lowther is not  separately  compensated by the Company for his
services as General Counsel.


                                      28

<PAGE>





Steven L.  Zelkowitz was  appointed  Senior Vice  President  and Deputy  General
Counsel of KeySpan Energy effective October 1, 1998. Prior to such date he was a
member  of the law firm of  Cullen  and  Dykman.  During  1998,  this  firm also
represented  KeySpan  Energy in a variety of general and specific  matters.  The
total fees paid to this firm during 1998 were approximately $5,900,000.

DIRECTORS AND OFFICERS LIABILITY INSURANCE AND INDEMNITY

KeySpan  Energy  currently has in place Director and Officer  ("D&O")  liability
insurance for the purpose of reimbursing the Company when it has indemnified its
Directors and Officers.  D&O liability insurance also provides direct payment to
KeySpan Energy's Directors and Officers under certain circumstances when KeySpan
Energy has not  previously  provided  indemnification.  KeySpan  Energy also has
liability  insurance which provides  fiduciary  coverage for KeySpan Energy, its
Directors, Officers and employees for any alleged breach of fiduciary duty under
ERISA. The D&O liability  insurance was purchased from Associated Electric & Gas
Insurance  Services ("AEGIS") for a one-year period commencing May 28, 1998 at a
total cost of $1,294,299.  The fiduciary  liability insurance was also purchased
from AEGIS for a one-year period  commencing  August 26, 1998 at a total cost of
$80,000.

LITIGATION

Subsequent  to the  closing of the  Combination,  former  shareholders  of LILCO
commenced 13 class action  lawsuits in the New York State Supreme Court,  Nassau
County,  against KeySpan Energy and each of the former officers and directors of
LILCO.  These actions were consolidated in August 1998. The consolidated  action
alleges that, in connection  with certain  payments  LILCO had  determined  were
payable in connection  with the Combination to LILCO's  chairman,  and to former
officers of LILCO (the  "Payments"):  (i) the named  defendants  breached  their
fiduciary  duty owed to LILCO  and KSE  former  and/or  current  KeySpan  Energy
shareholders as a result of the Payments;  (ii) the named defendants intended to
defraud  such  shareholders  by means of  manipulative,  deceptive  and wrongful
conduct, including materially inaccurate and incomplete news reports and filings
with the SEC;  and (iii)  the named  defendants  recklessly  and/or  negligently
failed to disclose material facts associated with the Payments.

In addition,  three shareholder  derivative actions have been commenced pursuant
to which such  shareholders seek the return of the Payments or damages resulting
from among other things,  an alleged breach of fiduciary duty on the part of the
former LILCO officers and  directors.  One action was brought on behalf of LILCO
in federal court. KeySpan Energy moved to dismiss this action in September 1998.
The other two actions were brought on behalf of KeySpan Energy in New York State
Supreme  Court,  Nassau  County.  In one of these state court  actions,  KeySpan
Energy's  directors  and the  recipients  of the  Payments  are  also  named  as
defendants.

Finally,  two class action securities suits were filed in federal court alleging
that certain  officers and  directors of LILCO  violated the federal  securities
laws by failing to properly  disclose  that the  Combination  would  trigger the
Payments. These actions were consolidated in October 1998.

On March 17, 1999, Keyspan Energy signed a Memorandum of Understanding to settle
the  above-referenced  actions,  except the federal court derivative  action, in
exchange  for (i) $7.9 million to be  distributed  (less  plaintiffs'  attorneys
fees) to former LILCO and KSE shareholders  and (ii) KeySpan Energy's  agreement
to implement certain corporate governance and executive compensation procedures.
The entire $7.9 million settlement commitment will be funded from insurance. The
parties  intend to submit the  settlement to the Nassau County Supreme Court for
its review and approval. If that Court approves the settlement, the parties will
then make an application  to the federal court for an order and final  judgment,
dismissing  the  three  federal  court  actions,  including  the  federal  court
derivative action, based, among other things, on the binding effect of the state
court judgment.

In addition to the above-mentioned actions, a class action lawsuit has also been
filed in the New York State

                                      29

<PAGE>





Supreme Court,  Suffolk County,  by the County of Suffolk against LILCO's former
officers and/or directors.  The County of Suffolk alleges that the Payments were
improper,  and seeks to recover the Payments  for the benefit of Suffolk  County
ratepayers.   KeySpan  Energy  moved  to   consolidate   this  action  with  the
above-mentioned consolidated action in October 1998.

Finally,  certain other proceedings have been commenced relating to the Payments
and disclosures made by LILCO with respect thereto.  These  proceedings  include
investigations by the New York State Attorney General, the NYPSC and LIPA, joint
hearings  conducted by two  committees  of the New York State  Assembly,  and an
informal,  non-public  inquiry by the SEC.  In  December  1998,  KeySpan  Energy
settled  with LIPA and the  NYPSC.  The  agreement  includes  a payment  of $5.2
million  by the  KeySpan  Energy  to LIPA  that  will be used by LIPA to  supply
postage-paid  bill  return  envelopes  to  customers  for the next three  years.
KeySpan  Energy  also agreed to fully  reimburse  and  indemnify  LIPA for costs
incurred by LIPA, amounting to approximately  $765,000,  for attorneys and other
consultants  involved  in the  investigation.  Such  amounts  are not covered by
insurance.  KeySpan Energy is cooperating  fully with the  investigations of the
New York State  Attorney  General and the SEC. To date, no action has been taken
either by the New York State Attorney General or the SEC.

At this time KeySpan  Energy is unable to  determine  the outcome of the ongoing
proceedings, or any of the remaining lawsuits described above.

OTHER INFORMATION

DEADLINE FOR SHAREHOLDER PROPOSALS

Shareholder  proposals  for the 2000  Annual  Meeting  must be  received  by the
Secretary at KeySpan  Energy's  principal  executive  office,  not less than 120
calendar  days prior to the  anniversary  date of the  release of the  Company's
proxy statement to  shareholders in connection with the 1999 Annual Meeting,  to
be considered by the Company for possible  inclusion in the proxy  materials for
the 2000 Annual Meeting.

In  addition,  all  shareholder  proposals  for the 2000 Annual  Meeting must be
submitted to the Company in accordance with Section 2.7 of the Company's By-Laws
not less than 60 nor more than 90  calendar  days in advance of the  anniversary
date of the 1999 Annual Meeting.

ADDITIONAL INFORMATION

KeySpan Energy's Annual Report for the nine-month period ended December 31, 1998
is being  mail to  shareholders  on or about the date of this  Proxy  Statement.
KeySpan  Energy  files an Annual  Report on Form  10-K with the  Securities  and
Exchange Commission (the "SEC") which includes additional information concerning
KeySpan Energy and its operations.  THE COMPANY'S ANNUAL REPORT OR ANNUAL REPORT
ON FORM 10-K, EXCEPT FOR EXHIBITS,  WILL BE FURNISHED AT NO COST TO SHAREHOLDERS
UPON WRITTEN  REQUEST TO THE SECRETARY,  KEYSPAN ENERGY,  ONE METROTECH  CENTER,
BROOKLYN, NEW YORK 11201-3850.


SECTION 16(A) BENEFICIAL OWNERSHIP REPORTING COMPLIANCE

Section 16(a) of the Exchange Act requires KeySpan Energy's directors, executive
officers and persons who own more than ten percent  (10%) of a registered  class
of KeySpan  Energy's  equity  securities to file with the SEC initial reports of
beneficial  ownership and reports of changes in  beneficial  ownership of Common
Stock and  other  equity  securities  of  KeySpan  Energy.  Executive  officers,
directors  and greater than ten percent (10%)  shareholders  are required by SEC
regulation  to furnish  KeySpan  Energy with  copies of all Section  16(a) forms
which they file.


                                      30

<PAGE>





To KeySpan Energy's knowledge,  based solely on review of information  furnished
to KeySpan Energy, reports filed through KeySpan Energy and representations that
no other reports were required, all Section 16(a) filing requirements applicable
to its  directors,  executive  officers  and  greater  than  ten  percent  (10%)
beneficial owners were complied with during the nine-month period ended December
31, 1998,  except that James R. Jones, a director of KeySpan  Energy,  failed to
timely file two reports relating to two transactions.

METHOD AND COST OF SOLICITATION OF PROXIES

KeySpan Energy will bear the cost of soliciting  proxies. In addition to the use
of the mails,  proxies may be  solicited  personally  or by telephone by KeySpan
Energy  directors,  officers and employees for no  additional  compensation.  In
addition,  KeySpan  Energy  will  reimburse  brokers,  bank  nominees  and other
institutional holders for their reasonable  out-of-pocket expenses in forwarding
proxy materials to the beneficial owners of the Company's Common Stock.

DISCLOSURE OF "BROKER NON-VOTES" AND ABSTENTIONS

Securities and Exchange  Commission rules provide that  specifically  designated
blank  spaces are  provided on the proxy card for  shareholders  to mark if they
wish either to withhold  authority to vote for one or more nominees for director
or to abstain on one or more of the proposals. Votes withheld in connection with
the election of one or more of the nominees for director  will not be counted as
votes cast for or  against  such  individuals.  With  respect  to the  proposals
relating to selection of auditors  and approval of the Employee  Discount  Stock
Purchase Plan and Long-Term Performance Incentive Compensation Plan, abstentions
are not counted in determining the number of votes cast in connection with these
proposals, since New York State law requires a majority of only those votes cast
"for" or "against"  approval,  while broker  non-votes are treated as shares not
entitled to vote,  thus giving both  abstentions  and non-votes no effect.  With
respect  to  the  proposal  relating  to an  amendment  to  the  Certificate  of
Incorporation to change the Company's name,  abstentions from voting are treated
as votes against,  while broker  non-votes are treated as shares not entitled to
vote. The proposal relating to the Long-Term Performance Incentive  Compensation
Plan  is  considered  "non-discretionary"  and  brokers  who  have  received  no
instructions  from  their  clients  do not  have the  authority  to vote on this
proposal.   All  abstentions  and  broker  non-votes  are  counted  towards  the
establishment of a quorum.

CONFIDENTIAL VOTING

KeySpan  Energy  has  adopted a policy  to the  effect  that all  proxy  (voting
instruction)  cards,  ballots and vote tabulations which identify the particular
vote of a shareholder are to be kept secret from KeySpan Energy,  its directors,
officers  and  employees.  Accordingly,  proxy cards are  returned in  envelopes
addressed to the tabulator,  The Bank of New York,  which receives and tabulates
the  proxies and is  independent  of KeySpan  Energy.  The final  tabulation  is
inspected by inspectors of election who also are  independent of KeySpan Energy,
its directors,  officers and employees. The identity and vote of any shareholder
shall not be disclosed to KeySpan Energy,  its directors  officers or employees,
nor to any  third  party  except  (i) to allow  the  independent  inspectors  of
election  to certify the results of the vote to KeySpan  Energy,  its  directors
officers and employees;  (ii) as necessary to meet applicable legal requirements
and to assert or defend claims for or against KeySpan Energy; (iii) in the event
of a proxy  solicitation  based  on an  opposition  proxy  statement  filed,  or
required to be filed,  with the Securities and Exchange  Commission;  or (iv) in
the event a shareholder has made a written comment on such form of proxy.

OTHER MATTERS

As of the date of this proxy statement, KeySpan Energy knows of no business that
will be  presented  for  consideration  at the  Annual  Meeting  other  than the
proposals  discussed above. If any matter is properly brought before the meeting
for action by the  shareholders,  proxies in the form returned to KeySpan Energy
will be voted in accordance  with the  recommendation  of the Board of Directors
or, in the absence of such a recommendation, in

                                      31

<PAGE>





accordance with the judgment of the proxy holder.

By Order of the Board of Directors

Robert B. Catell
Chairman and Chief Executive Officer


Dated:  April 7, 1999


                                      32

<PAGE>





[KeySpan Logo]

One MetroTech Center
Brooklyn, New York 11201-3850









MARKETSPAN CORPORATION
D/B/A KEYSPAN ENERGY



LONG-TERM PERFORMANCE INCENTIVE COMPENSATION PLAN



APPENDIX A



                                      33

<PAGE>





KEYSPAN ENERGY
LONG-TERM PERFORMANCE
INCENTIVE COMPENSATION PLAN

1. ADOPTION AND PURPOSE

MarketSpan  Corporation  d/b/a KeySpan Energy (the "Company") hereby adopts this
Long-Term  Performance  Incentive  Compensation  Plan,  subject to the  approval
required under Section 17 (the "Plan").  The purposes of the Plan are to promote
the  interests  of the  Company  and  its  stockholders  by (a)  attracting  and
retaining  key  employees,  directors  and  consultants  of the  Company and its
Subsidiaries  (as  defined  below);  (b)  motivating  such  persons  by means of
performance-related  incentives to achieve long-range performance goals; and (c)
enabling  such persons to  participate  in the  long-term  growth and  financial
success of the Company.

2. DEFINITIONS

The  following  words and phrases  shall have the  following  meanings  unless a
different meaning is plainly required by the context:

"Award" means,  individually or  collectively,  a grant under this Plan of Stock
Options or  Restricted  Shares or a  Performance  Stock  Award.  The issuance of
Restricted Shares pursuant to a Performance Stock Award shall not be a new Award
under this Plan.

"Award Agreement" means a written agreement entered into between the Company and
a Participant  setting  forth the terms and  conditions of an Award made to such
Participant under this Plan, in the form prescribed by the Committee.

"Beneficial  Owner or Beneficial  Ownership"  shall have the meaning ascribed to
such terms in Rule 13d-3 of the General Rules and Regulations under the Exchange
Act.

"Board" means the Board of Directors of the Company.

"Business Combination" shall have the meaning specified in Section 12(b)(iii).

"Change of Control" shall have the meaning specified in Section 12(b).

"Code"  means the  Internal  Revenue  Code of 1986,  as amended.  Reference to a
specific section of the Code or regulation thereunder shall include such section
or regulation,  any valid  regulation  promulgated  under such section,  and any
comparable   provision  of  any  future  legislation  or  regulation   amending,
supplementing or superseding such section or regulation.

"Committee"  means the  Compensation  and Nominating  Committee of the Board, or
such other  committee  appointed  by the Board,  each member of which shall be a
"Non-Employee  Director" within the meaning of Rule 16b-3 under the Exchange Act
and shall be an "outside  director"  within the meaning of Section 162(m) of the
Code. The Committee shall be composed of at least two (2) such directors.

"Common Stock" means the common stock of the Company.

"Company"  means  MarketSpan  Corporation  d/b/a  KeySpan  Energy,  a  New  York
corporation.

"Consultant"  means any  Person  who is not a  Director  or an  employee  of the
Company or a Subsidiary  and who provides bona fide services to the Company or a
Subsidiary,  provided that such services are not rendered in connection with the
offer or sale of securities in a capital-raising transaction.

                                      34

<PAGE>





"Director"  means a  member  of the  Board  of  Directors  of the  Company  or a
Subsidiary who is not an employee of the Company or a Subsidiary.

"Effective Date" means the effective date of this Plan as defined in Section 17.

"Employee" means a key employee of the Company or a Subsidiary.

"Exchange Act" means the Securities Exchange Act of 1934, as amended.  Reference
to a specific section of the Exchange Act or regulation thereunder shall include
such section or regulation, any valid regulation promulgated under such section,
and any comparable  provision of any future legislation or regulation  amending,
supplementing or superseding such section or regulation.

"Fair Market  Value" means the closing  price of the Common Stock as reported on
the New York Stock Exchange on the relevant  valuation date or, if there were no
Common Stock  transactions  on the valuation date, on the next preceding date on
which there were Common Stock transactions.

"Incentive Stock Option" has the meaning specified in Section 6(b).

"Incumbent Board" shall have the meaning specified in Section 12(b)(ii).

"Negative  Discretion"  means other  factors to be applied by the  Committee  in
reducing the number of Restricted  Shares to be issued pursuant to a Performance
Stock  Award if the  Performance  Goals  have  been met or  exceeded  if, in the
Committee's  sole judgment,  such  application is appropriate in order to act in
the best interest of the Company and its shareholders.

"Outstanding  Company Common Stock" shall have the meaning  specified in Section
12(b)(i).

"Outstanding  Company  Voting  Securities"  shall have the meaning  specified in
Section 12(b)(i).

"Participant" means an Employee,  Director or Consultant who has been granted an
Award under this Plan.

"Performance Goals" means, with respect to any Performance  Period,  performance
goals based on any of the following  criteria and  established  by the Committee
prior to the beginning of such Performance  Period or performance goals based on
any of the  following  criteria  and  established  by the  Committee  after  the
beginning of such Performance Period that meet the requirements to be considered
pre-established  performance goals under Section 162(m) of the Code: earnings or
earnings growth;  earnings per share; return on equity, assets, capital employed
or investment; revenues or revenue growth; gross profit; gross margin; operating
profit;  operating  margin;  operating cash flow;  stock price  appreciation and
total  shareholder  return.  Such  Performance  Goals  may  be  particular  to a
Participant or the division, department, branch, line of business, Subsidiary or
other unit in which the Participant works, or may be based on the performance of
the Company generally.

"Performance  Period"  means the  period  of time  designated  by the  Committee
applicable to a Performance Stock Award during which the Performance Goals shall
be measured.

"Performance Stock Award" shall have the meaning specified in Section 6(d).

"Person" shall have the meaning  ascribed to such term in Section 3(a)(9) of the
Exchange Act and used in Sections 13(d) and 14(d) thereof,  including a group as
defined in Section 13(d) thereof.

"Plan" means this KeySpan Energy Long-Term  Performance  Incentive  Compensation
Plan.


                                      35

<PAGE>





"Plan Year" means an annual period coinciding with the Company's fiscal year.

"Reporting  Person"  means an officer or director of the Company  subject to the
reporting requirements of Section 16 of the Exchange Act.

"Restricted Shares" shall have the meaning specified in Section 6(c).

"Restriction Period" shall have the meaning specified in Section 6(c).

"Securities  Act" means the Securities  Act of 1933, as amended.  Reference to a
specific  section of the Securities Act or regulation  thereunder  shall include
such section or regulation, any valid regulation promulgated under such section,
and any comparable  provision of any future legislation or regulation  amending,
supplementing or superseding such section or regulation.

"Stock Option" has the meaning specified in Section 6(a).

"Subsidiary" means any corporation or other entity, whether domestic or foreign,
in which the Company  has or obtains,  directly  or  indirectly,  a  proprietary
interest of more than 50% by reason of stock ownership or otherwise.

3. ELIGIBILITY

Any Employee,  Director or  Consultant  selected by the Committee is eligible to
receive an Award.

4. PLAN ADMINISTRATION

(a) This Plan  shall be  administered  by the  Committee.  The  Committee  shall
periodically make determinations with respect to participation in this Plan and,
except as  otherwise  required  by law or this Plan,  the grant  terms of Awards
including vesting schedules, price, performance standards (including Performance
Goals), length of relevant performance,  restriction or option period,  dividend
rights,  post-retirement  and  termination  rights,  and such  other  terms  and
conditions as the Committee deems  appropriate.  Except as otherwise required by
this Plan,  the  Committee  shall have  authority to interpret  and construe the
provisions  of this  Plan  and the  Award  Agreements  and  make  determinations
pursuant to any Plan provision or Award Agreement, which determinations shall be
final and binding on all persons.

(b) The Committee, in its sole discretion and on such terms and conditions as it
may provide, may delegate all or any part of its authority and powers under this
Plan to one or more  directors  or officers of the Company;  provided,  however,
that the Committee may not delegate its authority and powers (i) with respect to
Reporting  Persons,  or (ii) in any  way  which  would  jeopardize  this  Plan's
qualification  under  Section  162(m) of the Code or Rule 16b-3 of the  Exchange
Act.

(c) All  determinations  and decisions made by the Committee,  the Board and any
delegate of the Committee  pursuant to Section 4(b) shall be final,  conclusive,
and binding on all persons,  and shall be given the maximum deference  permitted
by law.

5. STOCK SUBJECT TO THE PROVISIONS OF THIS PLAN

(a) The stock  subject to the  provisions of this Plan shall either be shares of
authorized  but unissued  Common Stock,  shares of Common Stock held as treasury
stock or  previously  issued  shares of Common Stock  reacquired by the Company,
including  shares  purchased  on the  open  market.  Subject  to  adjustment  in
accordance  with the  provisions  of Section  10, the total  number of shares of
Common Stock with respect to which Awards may be granted under this Plan may not
exceed 10,500,000 shares.

                                      36

<PAGE>





(b) Subject to adjustment in accordance  with Section 10, and subject to Section
5(a),  the total  number of shares of Common  Stock with  respect to which Stock
Options  and  Performance  Stock  Awards  may be granted in any Plan Year to any
Participant shall not exceed 750,000 shares.

(c) For  purposes  of  calculating  the total  number of shares of Common  Stock
available for grants of Awards,  the grant of an Award of Restricted Shares or a
Performance  Stock Award  shall be deemed to be equal to the  maximum  number of
shares of Common Stock which may be issued under the Award.

(d) Subject to Section  5(b),  there shall again be  available  for Awards under
this Plan,  all of the  following:  (i) shares of Common  Stock  represented  by
Awards which have been canceled,  forfeited,  surrendered,  terminated or expire
unexercised  during preceding Plan Years; and (ii) the excess amount of variable
Awards which become fixed at less than their maximum limitations.

6. AWARDS UNDER THIS PLAN

Subject to the  provisions of this Plan,  the Committee  shall have the sole and
complete authority to determine the Employees, Directors and Consultants to whom
Awards shall be granted and the type, terms and conditions of such Awards (which
need not be the same for each Participant).  As the Committee may determine, the
following  types of Awards  may be  granted  under  this Plan on a stand  alone,
combination or tandem basis:

(a) Stock Option. A right to buy a specified number of shares of Common Stock at
a fixed exercise price during a specified  time, and subject to such other terms
and conditions,  all as the Committee may determine;  provided that the exercise
price of any Stock  Option  shall not be less than 100% of the Fair Market Value
of the Common Stock on the date of grant of the Award.

(b)  Incentive  Stock  Option.  An  award in the  form of a Stock  Option  to an
Employee which shall comply with the  requirements of Section 422 of the Code or
any successor Section as it may be amended from time to time.

(c)  Restricted  Shares.  A transfer of shares of Common Stock to a Participant,
for such consideration and subject to such restrictions,  if any, on transfer or
other  incidents of  ownership,  for such periods of time (with  respect to each
Award,  a  "Restriction  Period")  as the  Committee  may  determine.  The stock
certificate or certificates  representing  Restricted Shares shall be registered
in the name of the  Participant to whom such  Restricted  Shares shall have been
awarded. During the Restriction Period, certificates representing the Restricted
Shares  shall bear a  restrictive  legend to the effect  that  ownership  of the
Restricted  Shares,  and the enjoyment of all rights  appurtenant  thereto,  are
subject to the restrictions,  terms and conditions  provided in the Plan and the
applicable Award Agreement. Such certificates shall remain in the custody of the
Company and the Participant shall deposit with the Company stock powers or other
instruments of assignment, each endorsed in blank, so as to permit retransfer to
the  Company  of all or any  portion  of the  Restricted  Shares  that  shall be
forfeited or otherwise  not become  vested in  accordance  with the Plan and the
applicable Award Agreement.

Restricted Shares shall constitute issued and outstanding shares of Common Stock
for all corporate  purposes.  The  Participant  will have the right to vote such
Restricted Shares, to receive and retain all dividends and distributions paid or
distributed on such Restricted Shares, and to exercise all other rights,  powers
and  privileges  of a holder of Common  Stock with  respect  to such  Restricted
Shares;  except that (i) the Participant will not be entitled to delivery of the
stock certificate or certificates  representing such Restricted Shares until the
Restriction Period shall have expired and unless all other vesting  requirements
with respect thereto shall have been fulfilled or waived;  (ii) the Company will
retain  custody  of the  stock  certificate  or  certificates  representing  the
Restricted  Shares during the Restriction  Period;  (iii) any such dividends and
distributions paid in shares of Common Stock shall constitute  Restricted Shares
and be subject to all of the same restrictions  during the Restriction Period as
the Restricted Shares with respect to which they were paid; (iv) the Participant
may not sell, assign,  transfer,  pledge,  exchange,  encumber or dispose of the
Restricted  Shares or his or her interest in any of them during the  Restriction
Period; and (v) a breach of any restrictions, terms

                                      37

<PAGE>





or conditions  provided in the Plan or established by the Committee with respect
to any Restricted  Shares will cause a forfeiture of such  Restricted  Shares on
the terms and conditions established by the Committee.

(d)  Performance  Stock Awards.  A right,  granted to a Participant,  to receive
Restricted  Shares (as defined in Section 6(c) hereof) that are not to be issued
to the Participant  until after the satisfaction of the Performance Goals during
a Performance Period.

7. PERFORMANCE STOCK AWARDS

(a)  Administration.  Performance  Stock  Awards may be granted to  Participants
either  alone or in  addition  to other  Awards  granted  under this  Plan.  The
Committee shall  determine the  Participants  to whom  Performance  Stock Awards
shall be awarded for any  Performance  Period,  the  duration of the  applicable
Performance  Period, the number of Restricted Shares to be awarded at the end of
a  Performance  Period  to  Participants  if the  Performance  Goals  are met or
exceeded (which  Restricted  Shares may, but need not,  contain  restrictions on
transfer or other incidents of ownership as permitted in Section 6(c)),  and the
terms  and  conditions  of the  Performance  Stock  Award in  addition  to those
contained in this Section 7.

(b)  Payment  of Award.  During or after the end of a  Performance  Period,  the
financial  performance  of the Company during such  Performance  Period shall be
measured against the Performance Goals. If the Performance Goals are not met, no
Restricted  Shares shall be issued pursuant to the  Performance  Stock Award. If
the Performance Goals are met or exceeded, the Committee shall certify that fact
in writing in the  Committee  minutes or  elsewhere  and  certify  the number of
Restricted  Shares to be issued under each Performance Stock Award in accordance
with the related Award  Agreement.  The Committee  may, in its sole  discretion,
apply Negative Discretion to reduce the number of Restricted Shares to be issued
under a Performance Stock Award.

8. OTHER TERMS AND CONDITIONS

(a)  Assignability.  Except as otherwise  determined by the Committee,  no Stock
Option or Performance Stock Award shall be assignable or transferable  except by
will or by the laws of descent  and  distribution  and during the  lifetime of a
Participant, Stock Options shall be exercisable only by such Participant.

(b) Award  Agreement.  Each Award under this Plan shall be evidenced by an Award
Agreement.

(c) Rights as a Shareholder. Except as otherwise provided in this Plan or in any
Award  Agreement,  a  Participant  shall  have no rights as a  shareholder  with
respect  to  shares  of  Common  Stock  covered  by an Award  until the date the
Participant is the holder of record of such shares.

(d) No Obligation to Exercise.  The grant of an Award shall impose no obligation
upon the Participant to exercise the Award.

(e) Payments by Participants.  The Committee may determine that Awards for which
a payment  is due from a  Participant  may be  payable:  (i) in U.S.  dollars by
personal  check,  bank draft or money order payable to the order of the Company,
by money transfers or direct account debits; (ii) through the delivery or deemed
delivery  based on attestation to the ownership of shares of Common Stock with a
Fair Market Value equal to the total payment due from the Participant;  (iii) by
a combination  of the methods  described in (i) and (ii) above;  or (iv) by such
other methods as the Committee may deem appropriate.

(f) Tax Withholding. The Company shall have the power and the right to deduct or
withhold, or require a Participant to remit to the Company, an amount sufficient
to satisfy  federal,  state and local taxes  (including the  Participant's  FICA
obligation) required to be withheld with respect to an Award or any dividends or
other distributions payable with respect thereto. Subject to the requirements of
Rule 16b-3 of the Exchange Act, the Committee, in its

                                      38

<PAGE>





sole  discretion and pursuant to such  procedures as it may specify from time to
time, may permit a Participant to satisfy such tax  withholding  obligation,  in
whole  or in  part,  by (i)  electing  to have the  Company  withhold  otherwise
deliverable  shares of Common Stock having a Fair Market Value not exceeding the
minimum amount required to be withheld, or (ii) delivering to the Company shares
of Common  Stock then owned by the  Participant.  The amount of the  withholding
obligation  satisfied by shares of Common Stock  withheld or delivered  shall be
the Fair Market  Value of such shares  determined  as of the date that the taxes
are required to be withheld.

(g)  Restrictions on Sale and Exercise.  If and to the extent required to comply
with rules  promulgated  under  Section  16 of the  Exchange  Act,  (i) no Award
providing for exercise, a vesting period, a Restriction Period or the attainment
of performance standards shall permit unrestricted ownership of shares of Common
Stock by the  Participant  for at least six months  from the date of grant,  and
(ii) shares of Common Stock  acquired  pursuant to an Award  granted  under this
Plan may not be sold or otherwise  disposed of for at least six months after the
date of the grant of the Award.

(h)  Requirements  of Law.  The granting of Awards and the issuance of shares of
Common  Stock upon the  exercise  of Awards  shall be subject to all  applicable
requirements  imposed by federal and state  securities and other laws, rules and
regulations and by any regulatory agencies having jurisdiction, and by any stock
exchanges upon which the Common Stock may be listed. As a condition precedent to
the issuance of shares of Common  Stock  pursuant to the grant or exercise of an
Award, the Company may require the Participant to take any reasonable  action to
meet such requirements.

(i)  Non-Exclusivity  of the Plan. Neither the adoption of the Plan by the Board
nor the submission of the Plan to the  stockholders  of the Company for approval
shall be  construed  as creating  any  limitations  on the power of the Board to
adopt such other incentive  arrangements  as it may deem  desirable,  including,
without limitation,  the granting of stock options and the awarding of stock and
cash  otherwise  than  under  the  Plan,  and such  arrangements  may be  either
generally applicable or applicable only in specific cases.

(j) Unfunded Plan.  Neither the Company nor any Subsidiary  shall be required to
segregate  any cash or any  shares  of  Common  Stock  which  may at any time be
represented  by Awards and the Plan shall  constitute an "unfunded"  plan of the
Company.  Neither the Company nor any Subsidiary shall, by any provisions of the
Plan, be deemed to be a trustee of any Common Stock or any other  property,  and
the liabilities of the Company and any Subsidiary to any Participant pursuant to
the Plan shall be those of a debtor pursuant to such contract obligations as are
created  by or  pursuant  to the  Plan,  and the  rights of any  Participant  or
beneficiary  under the Plan shall be limited to those of a general  creditor  of
the  Company  or the  applicable  Subsidiary,  as the case  may be.  In its sole
discretion, the Board may authorize the creation of trusts or other arrangements
to meet the obligations of the Company under the Plan, provided,  however,  that
the  existence  of such  trusts or other  arrangements  is  consistent  with the
unfunded status of the Plan.

(k)  Legends.  In  addition to any legend  contemplated  by Section  6(c),  each
certificate  evidencing Common Stock subject to an Award shall bear such legends
as the  Committee  deems  necessary  or  appropriate  to reflect or refer to any
terms,  conditions  or  restrictions  of the Award  applicable  to such  shares,
including,  without  limitation,  any to the effect that the shares  represented
thereby may not be  disposed  of unless the  Company has  received an opinion of
counsel,  acceptable to the Company,  that such disposition will not violate any
federal or state securities laws.

(l) Company's Rights.  The grant of Awards pursuant to the Plan shall not affect
in any way  the  right  or  power  of the  Company  to  make  reclassifications,
reorganizations  or other changes of or to its capital or business  structure or
to merge,  consolidate,  liquidate, sell or otherwise dispose of all or any part
of its business or assets.

(m) Designation of Beneficiaries.  If permitted by the Committee,  a Participant
may designate a beneficiary  or  beneficiaries  in the event of the death of the
Participant  and may  change  such  designation  from  time to time by  filing a
written designation of beneficiary or beneficiaries with the Committee on a form
to be prescribed by it,  provided  that no such  designation  shall be effective
unless so filed prior to the death of such Participant.

                                      39

<PAGE>





9. AMENDMENTS

(a)  Except  as  otherwise  provided  in this  Plan,  the  Board may at any time
terminate and, from time to time, may amend or modify this Plan. Any such action
of the Board may be taken  without the approval of the  Company's  shareholders,
but only to the  extent  that  such  shareholder  approval  is not  required  by
applicable  law or  regulation,  including  specifically  Rule  16b-3  under the
Exchange Act and Section 162(m) of the Code.

(b) No amendment,  modification  or termination of this Plan shall in any manner
adversely affect any Awards theretofore granted to a Participant under this Plan
without the consent of such  Participant.  No amendment or  modification of this
Plan may change any  Performance  Goal,  or increase  the  benefits  payable for
achievement of a Performance  Goal,  once  established  for a Performance  Stock
Award.

10.RECAPITALIZATION

The aggregate number of shares of Common Stock as to which Awards may be granted
to Participants, the number of shares thereof covered by each outstanding Award,
and the price per share thereof in each such Award, shall all be proportionately
adjusted for any  increase or decrease in the number of issued  shares of Common
Stock resulting from a stock split,  stock dividend,  combination or exchange of
shares,  exchange  for  other  securities,   reclassification,   reorganization,
redesignation, merger, consolidation, recapitalization or other such change. Any
such adjustment may provide for the elimination of fractional shares.

11.NO RIGHT TO EMPLOYMENT

No person shall have any claim or right to be granted an Award, and the grant of
an Award shall not be construed as giving a Participant the right to be retained
in the  employ of the  Company  or a  Subsidiary.  Nothing  in this  Plan  shall
interfere with or limit in any way the right of the Company or any Subsidiary to
terminate  any  Participant's  employment  at any  time,  nor  confer  upon  any
Participant  any  right  to  continue  in  the  employ  of  the  Company  or any
Subsidiary.

12.CHANGE OF CONTROL

(a)  Notwithstanding  anything  contained in this Plan or any Award Agreement to
the  contrary,  in the event of a Change  of  Control,  as  defined  below,  the
following shall occur with respect to any and all Awards  outstanding as of such
Change of Control:

(i) automatic  lapse of all  restrictions  and  acceleration of any time periods
relating to the exercise or vesting of Stock  Options and  Restricted  Shares so
that such Awards become  immediately  exercisable (and shall remain  exercisable
until the end of the original expiration period fixed in the Award Agreement) or
vested in full; and automatic  satisfaction  of Performance  Goals on a pro rata
basis with respect to the maximum number of Restricted  Shares issuable pursuant
to a Performance  Stock Award,  or on such other basis as set forth in the Award
Agreement,  so that such pro rata or other  portion  of such  Restricted  Shares
becomes immediately vested; and

(ii) all Awards become non-cancellable.

(b) A "Change of Control" of the Company  shall be deemed to have  occurred upon
the happening of any of the following events:

(i) The  acquisition  by any Person of  Beneficial  Ownership  of 20% or more of
either  (x) the then  outstanding  shares of common  stock of the  Company  (the
"Outstanding Company Common Stock") or (y) the combined voting power of the then
outstanding  voting  securities of the Company entitled to vote generally in the
election of directors (the "Outstanding Company Voting  Securities");  provided,
however, that for purposes of this subsection (i), the following

                                      40

<PAGE>





acquisitions  shall not  constitute  a Change of  Control:  (A) any  acquisition
directly  from  the  Company,  (B)  any  acquisition  by the  Company,  (C)  any
acquisition  by any  employee  benefit  plan (or  related  trust)  sponsored  or
maintained by the Company or any Person  controlled  by the Company,  or (D) any
acquisition by any Person pursuant to a transaction  which complies with clauses
(A), (B), and (C) of paragraph (iii) below; or

(ii)  Individuals  who,  as of the  Effective  Date,  constitute  the Board (the
"Incumbent Board") cease for any reason to constitute at least a majority of the
Board; provided,  however, that any individual becoming a director subsequent to
the Effective Date whose  election,  or nomination for election by the Company's
shareholders,  was  approved by a vote of at least a majority  of the  directors
then  comprising  the  Incumbent  Board  shall  be  considered  as  though  such
individual  were a  member  of the  Incumbent  Board,  but  excluding,  for this
purpose,  any such  individual  whose  initial  assumption of office occurs as a
result of an actual or threatened  election contest with respect to the election
or removal of directors or other actual or threatened solicitation of proxies or
consents by or on behalf of a Person other than the Board; or

(iii) Consummation of a reorganization, merger or consolidation or sale or other
disposition  of all or  substantially  all of the  assets of the  Company or the
acquisition of assets of another corporation (a "Business Combination"), in each
case, unless, following such Business Combination,  (A) all of substantially all
of the individuals and entities who were the Beneficial Owners, respectively, of
the Outstanding  Company Common Stock and Outstanding  Company Voting Securities
immediately  prior to such Business  Combination  beneficially  own, directly or
indirectly, more than 60% of, respectively, the Outstanding Company Common Stock
and the  combined  voting power of the  Outstanding  Company  Voting  Securities
entitled to vote generally in the election of directors,  as the case may be, of
the  corporation  resulting from such Business  Combination  including,  without
limitation, a corporation which as a result of such transaction owns the Company
or all or  substantially  all of the Company's assets either directly or through
one or more  subsidiaries)  in  substantially  the  same  proportions  as  their
ownership,  immediately  prior to such Business  Combination of the  Outstanding
Company Common Stock and Outstanding Company Voting Securities,  as the case may
be,  (B) no Person  (excluding  any  corporation  resulting  from such  Business
Combination  or any employee  benefit plan (or related  trust) of the Company or
such corporation  resulting from such Business  Combination)  beneficially owns,
directly or indirectly,  20% or more, of, respectively,  the Outstanding Company
Common Stock of the corporation  resulting from such Business Combination or the
combined  voting power of the  Outstanding  Company  Voting  Securities  of such
corporation  except to the  extent  that  such  ownership  existed  prior to the
Business Combination, and (C) at least a majority of the members of the Board of
Directors of the  corporation  resulting  from such  Business  Combination  were
members  of the  Incumbent  Board at the time of the  execution  of the  initial
agreement,  or  of  the  action  of  the  Board,  providing  for  such  Business
Combination; or

(iv) Approval by the  shareholders  of the Company of a complete  liquidation or
dissolution of the Company.

13.GOVERNING LAW

To the extent that federal  laws do not  otherwise  control,  this Plan shall be
construed in accordance with and governed by the law of the State of New York.

14.CAPTIONS

Captions are provided  herein for  convenience of reference  only, and shall not
serve as a basis for interpretation or construction of this Plan.

15.RESERVATION OF SHARES

The  Company,  during the term of the Plan,  will at all times  reserve and keep
available the number of shares of Common Stock as shall be sufficient to satisfy
the  requirements  of the Plan.  The  inability  of the  Company  to obtain  the
necessary  approvals from any regulatory  body having  jurisdiction  or approval
deemed necessary by the Company's

                                      41

<PAGE>



counsel to the lawful  issuance and sale of any shares of Common Stock under the
Plan shall relieve the Company of any liability in respect of the nonissuance or
sale of such shares of Common Stock as to which such requisite  authority  shall
not have been obtained.

16.SAVINGS CLAUSE

This  Plan is  intended  to  comply  in all  respects  with  applicable  law and
regulation,  including,  with respect to those  Participants  who are  Reporting
Persons,  Rule  16b-3  under the  Exchange  Act.  In case any one or more of the
provisions of this Plan shall be held invalid,  illegal or  unenforceable in any
respect  under  applicable  law  and  regulation  (including  Rule  16b-3),  the
validity,  legality and enforceability of the remaining  provisions shall not in
any  way  be  affected  or  impaired   thereby  and  the  invalid,   illegal  or
unenforceable  provision shall be deemed null and void;  however,  to the extent
permissible  by law,  any  provision  which  could be deemed null and void shall
first be construed,  interpreted or revised retroactively to permit this Plan to
be construed in compliance with all applicable laws (including Rule 16b-3) so as
to foster the intent of this Plan.  Notwithstanding anything in this Plan to the
contrary, the Committee, in its sole and absolute discretion, may bifurcate this
Plan so as to restrict, limit or condition the use of any provision of this Plan
to Participants  who are Reporting  Persons without so restricting,  limiting or
conditioning this Plan with respect to other  Participants.  All Awards of Stock
Options and Performance  Stock Awards are intended to comply with Section 162(m)
of the Code.

17.EFFECTIVE DATE AND TERM

The effective date (the "Effective  Date") of this Plan shall be the date of its
approval by the Company's  shareholders.  If such approval is not obtained on or
before  December 31, 1999, this Plan shall terminate on such date. No new Awards
shall be granted  under this Plan after the tenth  anniversary  of the Effective
Date. Unless otherwise  expressly provided in the Plan or in an applicable Award
Agreement,  any Award granted  hereunder  may, and the authority of the Board or
the Committee  under this Plan shall,  continue after the authority for grant of
new Awards hereunder has been exhausted.






<PAGE>

[KEYSPAN ENERGY LOGO]

PROXY CARD

The shares  represented  by this proxy when signed and returned will be voted as
directed by the Shareholder. If no direction is given, such shares will be voted
FOR all  proposals  and as said proxies deem  advisable on such other matters as
may properly come before the meeting.

THE BOARD OF DIRECTORS RECOMMENDS A VOTE "FOR" ALL PROPOSALS.

1. PROPOSAL NUMBER 1
   Election of Directors
   The Board of Directors recommends a vote "FOR" the nominees listed below:

   Nominees:01 Lilyan H. Affinito   08 James R. Jones
            02 George Bugliarello   09 Stephen W. McKessy
            03 Robert B. Catell     10 Edward D. Miller
            04 Howard R. Curd       11 Basil A. Paterson
            05 Richard N. Daniel    12 James Q. Riordan
            06 Donald H. Elliott    13 Frederic V. Salerno
            07 Alan H. Fishman      14 Vincent Tese

         FOR all              WITHHOLD AUTHORITY              FOR all nominees
     nominees listed   to vote for all nominees listed      except as indicated
        /     /                       /     /                     /     /

(INSTRUCTIONS:  TO WITHHOLD AUTHORITY TO VOTE FOR ANY INDIVIDUAL  NOMINEE,  MARK
THE "FOR ALL NOMINEES  EXCEPT AS INDICATED"  BOX AND WRITE THE NOMINEE'S NAME IN
THE SPACE PROVIDED BELOW.)

Exceptions _____________________________________________________________________

2. PROPOSAL NUMBER 2
   Ratification of Arthur Andersen LLP as independent public accountants

               For                  Against                 Abstain
               /     /              /     /                 /     /

3. PROPOSAL NUMBER 3
   Approval to change the Company's name to KeySpan Corporation

               For                  Against                 Abstain
               /     /              /     /                 /     /

4. PROPOSAL NUMBER 4
   Approval of the Employee Discount Stock Purchase Plan

               For                  Against                 Abstain
               /     /              /     /                 /     /



                                    - 1 -

<PAGE>



5. PROPOSAL NUMBER 5
   Approval of the Long-Term Performance Incentive Compensation Plan

               For                  Against                 Abstain
               /     /              /     /                 /     /


I have included comments, or have included a change of address.       /  /

I already receive an Annual Report and do not wish to receive one
   for this account.                                                  /  /

I plan to attend the Annual Meeting.                                  /  /

Please sign exactly as name or names appear on this proxy.
When  signing  as an  attorney,  executor,  administrator,  trustee,  custodian,
guardian or corporate  officer,  give full title. If more than one trustee,  all
should sign.

Dated:  __________________________________, 1999


- -------------------------------------------------------
            Signature of Shareholder

- -------------------------------------------------------

MARK, SIGN, DATE AND RETURN THE PROXY CARD PROMPTLY USING THE ENCLOSED ENVELOPE.

Votes MUST be indicated (x) in Black or Blue ink.




                                    - 2 -

<PAGE>



MARKETSPAN CORPORATION D/B/A KEYSPAN ENERGY      PROXY/VOTING INSTRUCTION CARD
- -------------------------------------------      -----------------------------

THIS  PROXY IS  SOLICITED  ON  BEHALF OF THE BOARD OF  DIRECTORS  OF  MARKETSPAN
CORPORATION  D/B/A KEYSPAN ENERGY FOR THE ANNUAL MEETING OF  SHAREHOLDERS ON MAY
20, 1999.

      The  undersigned  appoints  Donald H. Elliott and Stephen W. McKessy,  and
each of them,  with full  power of  substitution  in each,  the  proxies  of the
undersigned,  to represent  the  undersigned  and vote all shares of  MarketSpan
Corporation  d/b/a  KeySpan  Energy  Common Stock which the  undersigned  may be
entitled  to vote at the Annual  Meeting of  Shareholders  to be held on May 20,
1999,  and at any  adjournment  or  postponement  thereof,  as  indicated on the
reverse side. IN THEIR DISCRETION,  THE PROXIES ARE AUTHORIZED TO VOTE UPON SUCH
OTHER  BUSINESS  AS MAY  PROPERLY  COME BEFORE THE  MEETING  INCLUDING,  WITHOUT
LIMITATION,  ANY  MOTION  TO  ADJOURN  THE  MEETING  TO  ANOTHER  TIME OR  PLACE
(INCLUDING FOR THE PURPOSE OF SOLICITING ADDITIONAL PROXIES).

      THIS PROXY, WHEN PROPERLY  EXECUTED,  WILL BE VOTED IN THE MANNER DIRECTED
HEREIN BY THE UNDERSIGNED SHAREHOLDER. IF NO DIRECTION IS GIVEN, THIS PROXY WILL
BE VOTED FOR ALL  PROPOSALS  AND AS SAID  PROXIES  DEEM  ADVISABLE ON SUCH OTHER
MATTERS AS MAY PROPERLY COME BEFORE THE MEETING.

Comments: _________________________________________________________________

- ---------------------------------------------------------------------------

- ---------------------------------------------------------------------------

- ---------------------------------------------------------------------------

If you have  written in the above space,  please mark the comments  notification
box on the reverse side.

MARKETSPAN CORPORATION
P.O. BOX 11278
NEW YORK, NY  10203-0278







                                    - 3 -



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