[EXHIBIT 10yy TO COLONIAL GAS COMPANY
                FORM 10-K FOR YEAR ENDING 12/31/93]


                                                        0003-LG


                        SERVICE AGREEMENT
               (APPLICABLE TO RATE SCHEDULE AIT-1)
                                
This  Agreement ("Agreement") is made and entered into  this 15th
day of September, 1993, by and between Algonquin Gas Transmission
Company, a Delaware Corporation (herein called "Algonquin"),  and
Colonial  Gas  Company (herein called "Customer" whether  one  or
more persons).
                      W I T N E S S E T H :
                                
      WHEREAS, under the superseded Rate Schedule T-LG, Algonquin
transported  gas  received by displacement  from  Providence  Gas
Company ("Providence Gas"), which delivery by Providence Gas  was
accomplished  by physical deliveries to Providence Gas  from  the
storage  facilities of Algonquin LNG, Inc. in  Providence,  Rhode
Island; and

      WHEREAS, as a result of restructuring under Order No.  636,
Rate  Schedule T-LG has been superseded and replaced  by  service
under  Rate  Schedule AIT-1 with the quantities being treated  as
"old interruptible service" for purposes of scheduling of service
under Section 23 of the General Terms and Conditions;

      NOW, THEREFORE, in consideration of the premises and mutual
agreements, herein contained, Algonquin and Customer do agree  as
follows:

                            ARTICLE I
                       SCOPE OF AGREEMENT
                                
     1.1  Subject to the terms, conditions and limitations hereof
          and  of  Algonquin's  Rate  Schedule  AIT-1,  Algonquin
          agrees  to receive from or for the account of  Customer
          for transportation on an interruptible basis quantities
          of  natural gas tendered by Customer on any date at the
          Point(s) of Receipt; provided, however, Customer  shall
          not  tender without the prior consent of Algonquin,  at
          any  Point of Receipt on any day a quantity of  natural
          gas  in  excess of the applicable Maximum Daily Receipt
          Obligation   for  such  Point  of  Receipt   plus   the
          applicable  Fuel Reimbursement Quantity;  and  provided
          further  that Customer shall not tender at all Point(s)
          of  Receipt  on  any  day or in any year  a  cumulative
          quantity  of  natural gas, in excess of  the  following
          quantities  of  natural gas plus  the  applicable  Fuel
          Reimbursement Quantities:

          The Maximum Daily Transportation Quantity which, on any
          day, shall be equal to (i) the sum of the Maximum Daily
          Transportation Quantities for service under  Customer's
          existing  service agreements under firm rate  schedules
          in  Algonquin's  FERC Gas Tariff minus (ii)  the  total
          quantity  of  gas  actually scheduled for  delivery  to
          Customer under such rate schedules and the Backup
                        SERVICE AGREEMENT
               (APPLICABLE TO RATE SCHEDULE AIT-1)
                                
                                
                            ARTICLE I
                       SCOPE OF AGREEMENT
                           (Continued)
                                
          Portion  of Storage Demand under former Rate  Schedules
          STB  and SS-III on that day, as applicable.  Customer's
          Maximum Daily Receipt Obligation shall equal Customer's
          Maximum  Daily  Transportation Quantity for  each  day;
          provided,  however,  that only quantities  received  by
          displacement  from  Providence Gas  at  the  Providence
          Point of Receipt shall be treated as "old interruptible
          service"  under Section 23.1 of the General  Terms  and
          Conditions; and
          
          The  Maximum Annual Transportation Quantity,  which  is
          equal  to  the  yearly aggregate of Customer's  Maximum
          Daily Transportation Quantity.
          
     1.2  Algonquin agrees to transport and deliver to or for the
          account  of  Customer at the Point(s) of  Delivery  and
          Customer  agrees  to  accept  or  cause  acceptance  of
          delivery of the quantity received by Algonquin  on  any
          day,  less  the Fuel Reimbursement Quantity;  provided,
          however, Algonquin shall not be obligated to deliver at
          any  Point of Delivery on any day a quantity of natural
          gas  in excess of the applicable Maximum Daily Delivery
          Obligation  ("MDDO").  Customer's MDDO  for  each  such
          Point of Delivery on any day shall be equal to (i)  the
          sum  of  the  MDDOs  set forth in  Customer's  existing
          service   agreements  under  firm  rate  schedules   in
          Algonquin's  FERC  Gas  Tariff  minus  (ii)  the  total
          quantity  of  gas  actually scheduled for  delivery  to
          Customer at each such Point of Delivery under such rate
          schedules  and  the  Backup Portion of  Storage  Demand
          under   former  Rate  Schedules  STB  and  SS-III,   as
          applicable, on that day.

                           ARTICLE II
                        TERM OF AGREEMENT
                                
     2.1  This  Agreement shall become effective as of  the  date
          set  forth hereinabove and shall continue in effect for
          a  term ending May 31, 1994 ("Primary Term") and  shall
          remain  in force from month to month thereafter  unless
          terminated by either party by written notice  one  year
          or  more  prior to the end of the Primary Term  or  any
          successive term thereafter.
                        SERVICE AGREEMENT
               (APPLICABLE TO RATE SCHEDULE AIT-1)
                                
                           ARTICLE II
                        TERM OF AGREEMENT
                           (Continued)
                                
     2.2  This  Agreement  may  be  terminated  at  any  time  by
          Algonquin  in the event Customer fails to pay  part  or
          all of the amount of any bill for service hereunder and
          such failure continues for thirty days after payment is
          due;  provided  Algonquin gives ten days prior  written
          notice  to  Customer of such termination  and  provided
          further  such  termination shall not be  effective  if,
          prior to the date of termination, Customer either  pays
          such   outstanding  bill  or  furnishes  a   good   and
          sufficient   surety   bond  guaranteeing   payment   to
          Algonquin  of  such  outstanding  bill;  provided  that
          Algonquin  shall  not be entitled to terminate  service
          pending  the resolution of a disputed bill if  Customer
          complies  with the billing dispute procedure  currently
          on file in Algonquin's tariff.

                           ARTICLE III
                          RATE SCHEDULE
                                
     3.1  Customer  shall pay Algonquin for all services rendered
          hereunder  and  for the availability  of  such  service
          under Algonquin's Rate Schedule AIT-1 as filed with the
          Federal  Energy Regulatory Commission and as  the  same
          may  be hereafter revised or changed.  The rate  to  be
          charged Customer for transportation hereunder shall not
          be  more  than  the  maximum rate under  Rate  Schedule
          AIT-1,  nor  less  than  the minimum  rate  under  Rate
          Schedule AIT-1.

     3.2  This  Agreement and all terms and provisions  contained
          or incorporated herein are subject to the provisions of
          Algonquin's   applicable   rate   schedules   and    of
          Algonquin's General Terms and Conditions on  file  with
          the Federal Energy Regulatory Commission, or other duly
          constituted authorities having jurisdiction, and as the
          same  may be legally amended or superseded, which  rate
          schedules and General Terms and Conditions are by  this
          reference made a part hereof.

     3.3  Customer   agrees  that  Algonquin   shall   have   the
          unilateral   right   to  file  with   the   appropriate
          regulatory authority and make changes effective in  (a)
          the rates and charges applicable to service pursuant to
          Algonquin's  Rate Schedule AIT-1, (b) Algonquin's  Rate
          Schedule AIT-1, pursuant to which service hereunder  is
          rendered or (c) any provision of the General Terms  and
          Conditions   applicable   to   Rate   Schedule   AIT-1.
          Algonquin  agrees that Customer may protest or  contest
          the  aforementioned filings, or may seek  authorization
          from  duly constituted regulatory authorities for  such
          adjustment of Algonquin's existing FERC Gas  Tariff  as
          may be found necessary to assure that the provisions in
          (a), (b), or (c) above are just and reasonable.
                        SERVICE AGREEMENT
               (APPLICABLE TO RATE SCHEDULE AIT-1)
                                
                                
                           ARTICLE IV
                            ADDRESSES
                                
     Except  as herein otherwise provided or as provided  in  the
     General Terms and Conditions of Algonquin's FERC Gas Tariff,
     any  notice,  request, demand, statement,  bill  or  payment
     provided  for  in  this Agreement, or any notice  which  any
     party  may desire to give to the other, shall be in  writing
     and  shall  be considered as duly delivered when  mailed  by
     registered,  certified,  or first class  mail  to  the  post
     office address of the parties hereto, as the case may be, as
     follows:
     
     (a)   Algonquin:    Algonquin Gas  Transmission Company
                         1284  Soldiers Field Road, Boston, MA  02135
                         Attn:  John J. Mullaney
                                Vice President, Marketing

          (b)  Customer: Colonial Gas Company
                         40 Market Street, P. O. Box 3064
                         Lowell, MA  01853
                         Attn:     John P. Harrington
                                   Vice President, Gas Supply

     or  such  other address as either party shall  designate  by
     formal written notice.
     
                            ARTICLE V
                         INTERPRETATION
                                
     The interpretation and performance of the Agreement shall be
     in   accordance  with  the  laws  of  the  Commonwealth   of
     Massachusetts,  excluding conflicts of law  principles  that
     would  require  the application of the laws of  a  different
     jurisdiction.
     
                           ARTICLE VI
                   AGREEMENTS BEING SUPERSEDED
                                
                                
     When  this  Agreement becomes effective, it shall  supersede
     the following agreements between the parties hereto.
     
     Service  Agreement executed by Customer and Algonquin  under
     Rate Schedule T-LG dated November 1, 1984.
                                    
                                
     IN  WITNESS  WHEREOF, the parties hereto  have  caused  this
     Agreement  to be signed by their respective agents thereunto
     duly authorized, the day and year first above written.
     
     
     
     
                         ALGONQUIN GAS TRANSMISSION COMPANY

                         By:  /s/ John J. Mullaney

                         Title:  Vice President, Marketing




                         COLONIAL GAS COMPANY

                         By:  /s/ John P. Harrington

                         Title:  Vice President, Gas Supply


                 [EXHIBIT 10yy TO COLONIAL GAS COMPANY
                  FORM 10-K FOR YEAR ENDING 12/31/93]