Exhibit 10.18.1

                                           Amendment of FTNN Contract No. 100015


                             AMENDMENT OF AGREEMENT

     AGREEMENT  made as of this 1st day of August 2002, by and between  DOMINION
TRANSMISSION,  INC., a Delaware corporation,  hereinafter called "Pipeline," and
BOSTON GAS COMPANY D/B/A KEYSPAN ENERGY  DELIVERY NEW ENGLAND,  a  Massachusetts
corporation, hereinafter called "Customer."

     In consideration of the mutual  covenants  herein  contained,  Pipeline and
Customer  agree to replace  the  provisions  of Exhibit A and Article III to the
"Agreement  Applicable  To  Transportation  Of Natural  Gas Under Rate  Schedule
FTNN,"  between  Pipeline and Customer  dated October 1, 1993, to extend Term of
Agreement.

     NOW  THEREFORE,  in  consideration  of the mutual  covenants  and  promises
contained herein, the parties agree to amend the Service Agreement as follows:

     1. Article III, Term of Agreement is deleted and replaced by the following:

                                   Article III
                                Term of Agreement

          Subject to all the terms and conditions  herein,  this Agreement shall
     be  effective  as of October 1, 1993,  and shall  continue  in effect for a
     primary term through and  including  October 31, 2005 and from year to year
     thereafter  until either party  terminates this Agreement by giving written
     notice to the other at least  twelve  months prior to the start of the next
     contract year.

     2.   Exhibit A to the Agreement Applicable To The Transportation Of Natural
          Gas Under Rate Schedule FTNN dated October 1, 1993 is hereby  replaced
          with the attached Revised Exhibit A, effective April 1, 2003.

     3.   This amendment shall be effective April 1, 2003.

     In all other respects the above  referenced  Service  Agreement  remains in
full force and effect.

     IN WITNESS WHEREOF,  the parties hereto intending to be legally bound, have
caused  this  amendment  of  agreement  to be  signed by their  duly  authorized
officials, as of the day and year first written above.

DOMINION TRANSMISSION, INC.                    BOSTON GAS COMPANY
(Pipeline) D/B/A KEYSPAN ENERGY                DELIVERY NEW ENGLAND
                                                  (Customer)


By:    /s/                                     By: /s/ Nickolas Stavropoulos
-------------------------------                ---------------------------------
Its:  Authorized Representative                Its: President
                                                  (Title)

<PAGE>



                                           Amendment of FTNN Contract No. 100015


                                REVISED EXHIBIT A
                              To The FTNN Agreement
                              Dated October 1, 1993
                       Between Dominion Transmission, Inc.
                             And Boston Gas Company
                    D/B/A KeySpan Energy Delivery New England
                             Effective April 1, 2003

A.         Quantities

     The maximum quantities of gas that Pipeline shall deliver and that Customer
may tender shall be as follows:

     1.   A Maximum Daily Transportation  Quantity ("MDTQ") of 12,978 Dekatherms
          ("Dt") per day; and

     2.   A Maximum Annual Transportation Quantity ("MATQ") of 4,736,970 Dt.

B.         Point of Receipt and Delivery

          1.   The Point of Receipt  and the maximum  quantities  for such point
               shall be as set forth  below.  Each of the  parties  will use due
               care and  diligence  to assure  that  uniform  pressures  will be
               maintained at the Receipt Point as reasonably  may be required to
               render service hereunder. In addition to the quantities specified
               below, Customer may increase the quantities furnished to Pipeline
               at the Receipt Point, so long as such quantities, when reduced by
               the  fuel  retention  percentage  specified  in  Pipeline's  then
               currently-effective  FERC Gas Tariff,  do not exceed the quantity
               limitation specified below for the Receipt Point.

               Up to 12,978 Dt per Day at the interconnections of the facilities
               of Pipeline and Texas Gas Transmission Corporation,  ANR Pipeline
               Company, or other pipelines in Warren County,  Ohio, known as the
               Lebanon Interconnection.

          2.   The Points of  Delivery  and  maximum  quantities  for each point
               shall be as follows:

     Each of the parties will use due care and  diligence to assure that uniform
pressures  will be  maintained  at the Point of  Delivery as  reasonably  may be
required to render service hereunder.

               Up to 12,978 Dt per Day at the interconnections of the facilities
               Pipeline and  Transcontinental  Gas Pipeline Corporation or Texas
               Eastern Transmission Corporation in Clinton County,  Pennsylvania
               known as the Leidy Interconnection.

                                       2