Exhibit 99.1

                                                                        NEWS
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KeySpan Corporation                                        For Immediate Release

Contacts:  Investors                                        Media Relations
           George Laskaris                                  Andrea Staub
           718.403.2526                                     516.545.5052
                                                            516.824.1241 (pager)



       KeySpan Achieves Strong 1st Quarter Results - Up 8% over Last Year
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                 Solid Growth in Core Businesses Drive Earnings


Brooklyn,  New York, April 30, 2004 - KeySpan  Corporation (NYSE: KSE) announced
strong first quarter results that exceeded expectations and last year's results.
Consolidated   earnings  from  continuing   operations,   less  preferred  stock
dividends,  for the three  months  ended March 31,  2004 were $246.2  million or
$1.54 per share as  compared  to $222.8  million or $1.42 per share for the same
period  last year,  a per share  increase of  approximately  8%.  These  results
exclude  last year's  first  quarter  gain from the partial  sale of the Houston
Exploration Company. Including this gain, first quarter 2003 results were $241.8
million or $1.54 per share.

Operating income for the quarter was up 7% over last year. The solid performance
of the  gas  distribution  business  was  the  main  driver  of  these  results,
benefiting  from new gas load growth and the recently  approved  Boston Gas rate
increase. In addition,  the electric services and gas exploration and production
segments contributed to these positive results through lower electric generation
maintenance costs and higher natural gas production levels and prices.

"We are extremely  pleased with our strong first quarter  results as we continue
to execute our focused  strategy  of growing  our core  businesses.  At the same
time, we are managing our expenses and  strengthening  our financial  position,"
said  Robert  B.  Catell,   Chairman  and  Chief  Executive  Officer.  "Our  gas
distribution  system  performed very reliably  during one of the coldest January
months on record.  We are off to a strong  start in  achieving  our 2004 goal of
adding $55 million in gross profit margin as gas  conversions,  and new customer
additions  are already 20% ahead of last year.  In our electric  operations,  we
have  prepared  our  generation  portfolio  to meet the demands of the  upcoming
summer cooling season.  And we begin the summer with the addition of our new 250
MW unit at the  Ravenswood  site, the first new major baseload plant in New York
City in over 30 years."






Segment Highlights

The results from  continuing  operations  for the first quarter of 2004 and 2003
are reported on an Operating Income basis as follows:



- ------------------------------------------------------------------- ------------------ -------------------
                  Operating Income ($ millions)                        1st Quarter         1st Quarter
                                                                          2004                2003
- ------------------------------------------------------------------- ------------------ -------------------
                                                                                     
Gas Distribution                                                          379.7              364.9
- ------------------------------------------------------------------- ------------------ -------------------
Electric Services                                                         47.2                39.6
- ------------------------------------------------------------------- ------------------ -------------------
Energy Investments
- ------------------------------------------------------------------- ------------------ -------------------
           Exploration & Production                                       62.1                55.6
- ------------------------------------------------------------------- ------------------ -------------------
           Other Energy Investments                                       12.9                10.1
                                                                          ----                ----
- ------------------------------------------------------------------- ------------------ -------------------
           Sub-Total Energy Investments                                   75.0                65.7
- ------------------------------------------------------------------- ------------------ -------------------
Energy Services                                                          (18.5)              (9.1)
- ------------------------------------------------------------------- ------------------ -------------------
Total Operating Segments                                                  483.4              461.1
                                                                          -----              -----
- ------------------------------------------------------------------- ------------------ -------------------
Other                                                                      3.2               (4.5)
- ------------------------------------------------------------------- ------------------ -------------------
Total Operating Income                                                    486.7              456.7
- ------------------------------------------------------------------- ------------------ -------------------

  Notes:
- -    Reported Operating Income includes Equity Income from Investments.
- -    Energy  Investments  Operating Income  represents 100% of the Company's gas
     exploration and production and Canadian subsidiaries' results.


Key Operating Income Drivers by Segment

o    Our Gas Distribution  segment,  which serves New York City, Long Island and
     New England,  reported  operating  income of $380 million,  exceeding  2003
     results by approximately  $15 million,  or 4%. These results benefited from
     new load growth, as well as from a rate increase in the New England service
     territory.  During the  quarter,  KeySpan  completed  more than  10,300 gas
     installations,  which should add  approximately  $10.5 million in new gross
     profit  margin in the future.  The rate  increase for the former Boston Gas
     Company,  which became effective last November,  contributed  approximately
     $11 million to net margins.  Weather for the quarter was  approximately  7%
     colder  than  normal but 2% warmer  than last year.  Positive  year to date
     results were offset by an increase in operating  expenses of  approximately
     $12  million,   primarily   attributable   to  higher   pension  and  other
     post-retirement   benefit  costs,  a  larger  provision  for  uncollectible
     accounts  mainly  driven by higher  gas  prices,  and  higher  depreciation
     expense  resulting  from the  continued  expansion of the gas  distribution
     system.

o    The Electric Services segment owns and operates  generation in the New York
     City and Long Island  "load  pockets"  and  manages  the Long Island  Power
     Authority's transmission and distribution system under long-term contracts.
     Operating income for the first quarter was approximately $47 million, which
     was  $7.5   million  or  19%  higher   than  the  same  period  last  year,
     predominantly  attributable  to a  decrease  in  operating  expenses.  This
     decrease in operating expenses was primarily the result of lower repair and
     maintenance  costs on the electric  generating  units,  the  sequencing  of
     certain  projects  related  to the  LIPA  agreements,  and  the  impact  of
     recording the Ravenswood  facility lease on the balance sheet as debt under
     the  implementation  of FASB's  Financial  Interpretation  Number 46.


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o    The Energy  Investments  segment includes the Company's gas exploration and
     production  operations  --  primarily  its  55%  ownership  of The  Houston
     Exploration   Company  (NYSE:  THX)  --  as  well  as  pipeline  and  other
     investments.  This segment  realized a 14% increase in operating income for
     the first quarter,  largely due to higher  production  volumes and a slight
     increase in gas  commodity  prices in the  Company's  gas  exploration  and
     production operations.

o    The  Energy  Services  segment  reported  an  operating  loss that was $9.4
     million  higher  than last year.  During the  quarter,  in the Home  Energy
     Services division, operating expenses increased, principally as a result of
     the  determination  that certain accounts  receivable and contract revenues
     were uncollectible,  and inventory  adjustments.  In the Business Solutions
     Division, gross profit margin increased,  primarily attributable to BR+A, a
     company  that was  acquired  in the third  quarter of 2003.  The backlog of
     awarded contracts at quarter end increased to $508 million,  as compared to
     $479  million  at March 31,  2003,  due to the BR+A  acquisition.  Overall,
     however,  these results continue to be below  expectations,  and management
     continues to evaluate this segment and the profitability of its components,
     and will make the necessary changes as appropriate.


Financial Update

The Company continues to move ahead with its commitment to monetize its non-core
businesses and strengthen its balance sheet. On April 1, 2004, KeySpan completed
the sale of an  additional  36% of its  ownership  interest  in KeySpan  Canada,
reducing its holdings from 61% to 25%.  KeySpan's interest was monetized through
a Canadian income trust and yielded net proceeds of approximately  $140 million.
A pre-tax  gain of  approximately  $20 million is expected  to be  reflected  in
second quarter results.  The Company will continue to pursue  opportunities  for
the sale of its remaining  non-core assets,  including its ownership interest in
The Houston Exploration Company.

At the end of the first  quarter,  the  Company's  debt to total  capitalization
ratio, as calculated by the Company's credit  facilities,  improved to 56.1%, as
compared  to  58.2%  at year  end  2003.  On a GAAP  basis,  the  debt to  total
capitalization  ratio was 59.8% at the end of the quarter,  as compared to 61.9%
at year-end.

The Company  expects to finance the  construction  of the new 250 MW  Ravenswood
unit by replacing outstanding commercial paper with the proceeds from a proposed
sale/leaseback  transaction anticipated to be completed in the second quarter of
2004. This transaction will be accounted for as an operating lease in accordance
with SFAS 98. The benefits of this lease transaction are lower cost of financing
and reduced leverage.

The Company  declared a  quarterly  common  stock  dividend of $0.445 per share,
payable May 1, 2004, to shareholders of record as of April 16, 2004. This is the
Company's  24th  consecutive  quarter of paying a dividend,  and builds upon its
long-standing commitment of dividend payments to its shareholders. The $1.78 per
share annual dividend,  supported by strong cash flows, provides a current yield
to shareholders of approximately 5%.

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2004 Earnings Outlook

KeySpan's  2004  earnings  guidance  remains  at $2.55 to $2.75  per  share,  as
announced in December 2003. The Company's  earnings  guidance  includes earnings
from continuing core operations of  approximately  $2.20 to $2.30 per share, and
from exploration and production  operations of approximately  $0.35 to $0.45 per
share. The Company's earnings  forecasts may vary significantly  during the year
due to, among other things,  changing energy market conditions and weather.  The
Company once again  reaffirms  its dividend at the current  annual rate of $1.78
per share.

"Our strong  performance in the first quarter  demonstrates the effectiveness of
our growth  strategy and  establishes  the foundation for achieving our earnings
objectives  in 2004," said Mr.  Catell.  "Our core  businesses  continue to grow
through natural gas conversions and the addition of generation to our portfolio.
The new Ravenswood unit will contribute to both New York City's generation needs
for the upcoming  summer  cooling season and to our earnings in 2004 and beyond.
We are continuing to assess our options with respect to the  monetization of our
remaining  non-core  assets,  as exemplified by the recent 36%  monetization  of
KeySpan  Canada.  The growth of our core  businesses and the dividend yield will
continue to provide value to our shareholders."


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Investors  are  invited  to  listen  to the  KeySpan  Corporation  2003 Year End
Earnings Conference Call on:

Friday, April 30, 2004, at 10:30 AM (EST)

Dial-In Number: 888-552-7850
International Dial Number: (706) 645-9166
Conference ID # 4885686

Replay will begin two hours after completion of the call until 5/7/04
Replay Number: 800-642-1687
International Replay Number: (706) 645-9291
Access Code: 7293456

Audio webcast available at http://investor.keyspanenergy.com
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A member of the Standard & Poor's 500 Index,  KeySpan Corporation  (NYSE:KSE) is
the fifth  largest  distributor  of  natural  gas in the  United  States and the
largest  in the  Northeast,  operating  regulated  gas  utilities  in New  York,
Massachusetts  and  New  Hampshire,   serving  2.5  million   customers.   These
customer-focused businesses are complemented by a portfolio of service companies
which  offer  energy-related  products,  services  and  solutions  to homes  and
businesses. KeySpan is also the largest electric generator in New York State. We
own approximately 6,600 megawatts of generating capacity, providing power to 1.1
million  customers  of the  Long  Island  Power  Authority  on Long  Island  and
supplying  approximately  25  percent  of New York  City's  capacity  needs.  In
addition to these  assets,  KeySpan  has  strategic  investments  in natural gas
exploration, production, pipeline transportation,  distribution and storage, and
Canadian gas processing.  KeySpan has headquarters in Brooklyn,  New England and
Long   Island.   For   more   information,   visit   KeySpan's   web   site   at
www.keyspanenergy.com.

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Certain  statements  contained  herein  are  forward-looking  statements,  which
reflect  numerous  assumptions  and  estimates and involve a number of risks and
uncertainties.  For these statements, we claim the protection of the safe harbor
for  forward-looking  statements  provided by the Private Securities  Litigation
Reform Act of 1995. There are possible  developments that could cause our actual
results  to  differ   materially   from  those   forecast   or  implied  in  the
forward-looking  statements.  You are cautioned  not to place undue  reliance on
these forward-looking statements,  which are current only as of the date of this
filing.  We  disclaim  any  intention  or  obligation  to update  or revise  any
forward-looking  statements,  whether  as a result  of new  information,  future
events or otherwise. Among the factors that could cause actual results to differ
materially are: general economic conditions,  especially in the Northeast United
States;  available  sources and costs of fuel;  volatility of energy prices in a
deregulated  market environment as well as in the source of natural gas and fuel
used to generate electricity;  potential write-down of our investment in natural
gas properties  when natural gas prices are depressed or if we have  significant
downward  revisions  in our  estimated  proved gas  reserves;  federal and state
regulatory  initiatives that increase competition,  threaten cost and investment
recovery and impact rate structure;  our ability to successfully reduce our cost
structures;  implementation of new accounting standards;  the degree to which we
develop unregulated  business ventures,  as well as federal and state regulatory
policies  affecting our ability to retain and operate those  business  ventures;
our  ability to identify  and make  complementary  acquisitions,  as well as the
successful  integration of those acquisitions;  inflationary trends and interest
rates; and risks detailed from time to time in reports and other documents filed
by us with the Securities and Exchange Commission.




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                               KeySpan Corporation
                        Consolidated Summary of Earnings
               (In Thousands of Dollars, Except Per Share Amounts)


- ---------------------------------------------------------------------------------------------------------------------------
                                                                                              Quarter Ended March 31
                                                                                          2004                     2003
- ---------------------------------------------------------------------------------------------------------------------------
                                                                                                          
Revenues
Gas Distribution                                                                    $  1,927,779              $  1,832,701
Electric Services                                                                        359,136                   397,700
Energy Services                                                                          129,059                   129,065
Gas Exploration and Production                                                           152,419                   127,847
Energy Investments                                                                        27,180                    25,212
- ---------------------------------------------------------------------------------------------------------------------------
Total Revenues                                                                         2,595,573                 2,512,525
- ---------------------------------------------------------------------------------------------------------------------------

Operating Expenses
Purchased gas for resale                                                               1,226,573                 1,196,165
Fuel and purchased power                                                                 101,612                    97,522
Operations and maintenance                                                               492,466                   498,189
Depreciation, depletion and amortization                                                 171,684                   144,971
Operating taxes                                                                          122,279                   124,713
- ---------------------------------------------------------------------------------------------------------------------------
Total Operating Expenses                                                               2,114,614                 2,061,560
- ---------------------------------------------------------------------------------------------------------------------------

Income from equity investments                                                             5,717                     5,729

- ---------------------------------------------------------------------------------------------------------------------------
Operating Income                                                                         486,676                   456,694
- ---------------------------------------------------------------------------------------------------------------------------

Other Income and (Deductions)
Interest charges                                                                         (84,066)                  (68,939)
Minority interest                                                                        (20,293)                  (18,054)
Cost of debt redemption                                                                        -                   (18,194)
Gain of sale of subsidiary stock                                                               -                    19,020
Other                                                                                      2,761                    15,397
- ---------------------------------------------------------------------------------------------------------------------------
Total Other Income (Deductions)                                                         (101,598)                  (70,770)
- ---------------------------------------------------------------------------------------------------------------------------

Income Taxes
     Current                                                                             147,702                   129,575
     Deferred                                                                            (10,320)                   13,258
- ---------------------------------------------------------------------------------------------------------------------------
Total Income Taxes                                                                       137,382                   142,833
- ---------------------------------------------------------------------------------------------------------------------------

Earnings before Effect of Change in Accounting Principle                                 247,696                   243,091
Cumulative Effect of Change in Accounting Principle                                            -                       174

- ---------------------------------------------------------------------------------------------------------------------------
Net Income                                                                               247,696                   243,265
Preferred Stock Dividend Requirements                                                      1,461                     1,461
- -------------------------------------------------------------------
Earnings for Common Stock                                                           $    246,235              $    241,804
- -------------------------------------------------------------------

Basic Earnings Per Share:
   Before Change in Accounting Principle,
        less preferred stock dividends                                                     $1.54                     $1.54
   Change in Accounting Principle                                                              -                         -
- -------------------------------------------------------------------
Basic Earnings Per Share                                                                   $1.54                     $1.54
- -------------------------------------------------------------------
Diluted Earnings Per Share:
   Before Change in Accounting Principle,                                                  $1.53                     $1.53
        less preferred stock dividends
   Change in Accounting Principle                                                              -                         -
- -------------------------------------------------------------------
Diluted Earnings Per Share                                                                 $1.53                     $1.53
- -------------------------------------------------------------------

Average Shares Outstanding (000)                                                         159,892                   156,886
Average Shares Outstanding - Diluted (000)                                               161,164                   158,045


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                               KeySpan Corporation
                               Segment Information
                        Three Months Ended March 31, 2004
                            (In Thousands of Dollars)


                                                            Energy Investments
                                                        -------------------------
                                                             Gas                               Total
                                 Gas         Electric    Exploration     Other       Energy   Operating    Reconcil-        Total
                             Distribution    Services    & Production  Investments  Services   Segments     iations    Consolidation
                                                                                                 
 Unaffiliated Revenues          1,927,779      359,136     152,419        27,180     129,059   2,595,573                  2,595,573
 Intersegment Revenues                               -                     1,265       3,436       4,701     (4,701)              -
                            --------------------------------------------------------------------------------------------------------
                                1,927,779      359,136     152,419        28,445     132,495   2,600,274     (4,701)      2,595,573
                            --------------------------------------------------------------------------------------------------------

 Operation Expenses
 Purchased Gas                  1,226,573            -           -                         -   1,226,573          -       1,226,573
                                                                                                       -                          -
 Purchased Fuel                         -      101,489           -           123           -     101,612          -         101,612
                                                                                                       -                          -
 Operations and Maintenance       172,399      147,185      25,151        15,388     148,083     508,206    (15,740)        492,466
                                                                                                       -                          -
 Depreciation, Depletion
  and Amortization                 76,940       21,605      61,921         4,981       2,485     167,932      3,752         171,684
                                                                                                       -          -               -
 Operating Taxes                   72,214       41,657       3,239           748         401     118,259      4,020         122,279
                                                                                                       -
                            --------------------------------------------------------------------------------------------------------
 Total Operating Expenses       1,548,126      311,936      90,311        21,240     150,969   2,122,582     (7,968)      2,114,614
                            --------------------------------------------------------------------------------------------------------

Earnings from equity
 investments                            -            -           -         5,717           -       5,717          -           5,717

                            --------------------------------------------------------------------------------------------------------
 Operating Income                 379,653       47,200      62,108        12,922     (18,474)    483,409      3,267         486,676
                            ========================================================================================================



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                               KeySpan Corporation
                               Segment Information
                        Three Months Ended March 31, 2003
                            (In Thousands of Dollars)




                                                          Energy Investments
                                                       -------------------------
                                                           Gas                                 Total
                                Gas        Electric     Exploration     Other      Energy     Operating   Reconcil-       Total
                            Distribution   Services    & Production  Investments  Services    Segments    iations     Consolidation
                                                                                               
 Unaffiliated Revenues        1,832,701     397,700      127,847       25,212     129,065    2,512,525                  2,512,525
 Intersegment Revenues                           25                     1,252       1,426        2,703     (2,703)              -
                           ---------------------------------------------------------------------------------------------------------
                              1,832,701     397,725      127,847       26,464     130,491    2,515,228     (2,703)      2,512,525
                           ---------------------------------------------------------------------------------------------------------

 Operation Expenses
 Purchased Gas                1,154,132      42,033            -            -           -    1,196,165          -       1,196,165
                                                                                                     -                          -
 Purchased Fuel                       -      97,388            -          134           -       97,522          -          97,522
                                                                                                     -                          -
 Operations and Maintenance     166,090     164,401       20,106       16,644     137,178      504,419     (6,230)        498,189
                                                                                                     -
 Depreciation, Depletion
  and Amortization               70,817      16,620       47,443        4,471       2,114      141,465      3,506         144,971
                                                                                                     -
 Operating Taxes                 76,725      37,639        4,708          748         321      120,141      4,572         124,713

                           ---------------------------------------------------------------------------------------------------------
 Total Operating Expenses     1,467,764     358,081       72,257       21,997     139,613    2,059,712      1,848       2,061,560
                           ---------------------------------------------------------------------------------------------------------

Earnings from equity
 investments                          -           -            -        5,657           -        5,657         72           5,729

                           ---------------------------------------------------------------------------------------------------------
 Operating Income               364,937      39,644       55,590       10,124      (9,122)     461,173     (4,479)        456,694
                           =========================================================================================================



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