EXHIBIT 10-A-41

                     AMENDMENT TO FS SERVICE AGREEMENTS

         This Amendment to FS Service  Agreements (this  "Amendment") is made by
and  between  TRANSCONTINENTAL  GAS PIPE LINE  CORPORATION  ("TGPL")  and PUBLIC
SERVICE  COMPANY OF NORTH  CAROLINA,  INC.  ("Buyer")  related to three (3) Rate
Schedule  FS  Service   Agreements  dated  August  1,  1991,  with  Daily  Sales
Entitlements of 16,204 Mcf per day (16,771  Dekatherms  ("Dt") per day);  24,306
Mcf per day  (25,157 Dt per day);  and  32,408  Mcf per day  (33,542 Dt per day)
(collectively, "FS Agreements").

         WHEREAS,  Buyer requested  renegotiation  of the Firm Service Fee under
  Section 3d) of Exhibit "A" of the FS Agreements; and

         WHEREAS,  Buyer and Williams Energy Services Company, as agent for TGPL
("Seller"),  have  reached  agreement  as set  forth  below  regarding  the  Gas
Commodity Charge for swing service, the Firm Service Fee renegotiation,  and the
term, all as related to the FS Agreements; and

         WHEREAS,  Buyer and Seller desire to amend the FS Agreements previously
  entered into to reflect such agreement;

         NOW,  THEREFORE,  for and in  consideration of the mutual covenants and
  agreements contained herein, Seller and Buyer agree to amend the FS Agreements
  as follows:

I.       Definitions.  Capitalized terms used in this Amendment but not defined
         shall have the meaning ascribed to them in the FS Agreements.

2.       Term.  Buyer and Seller agree the FS Agreements  shall have an extended
         term  ending no earlier  than March 31,  2002,  and  neither  Buyer nor
         Seller  shall  exercise  its  right  not to  extend  the term of the FS
         Agreements  under  Article II[ of the FS  Agreements to the extent such
         exercise  would result in an extended term of the FS Agreements  ending
         prior to March 31, 2002.

3.       FS Fee.  Effective  April 1,  1999,  and  during  the  remaining  term
         (including  any  extended  term)  of the FS  Agreements  (i) the  Firm
         Service Fee shall be $4.5625 per Dt per month,  and (ii) neither Buyer
         nor  Seller  shall  exercise  its  rights  to  request  or  engage  in
         renegotiation of the Firm Service Fee under Section 3d) of Exhibit "A" 
         of the FS Agreements.

4.       Base Load FS Credit. No later than three (3) business days prior to the
         first-of-the-month nomination deadline of TGPL, Buyer may notify Seller
         of its election to receive and purchase a specified quantity of Gas (in
         Dts) each day  during  such  month not to exceed  Buyer's  Daily  Sales
         Entitlement  (such specified daily quantity the "Base Load  Quantity").
         In the event Buyer  timely  elects to receive and  purchase a Base Load
         Quantity  during a month,  (a) each day during  such month  Buyer shall
         purchase and receive a quantity of gas not less than the full Base Load
         Quantity,  and (b) Buyer shall  purchase  and receive a quantity of gas
         not less


















  Amendment to FS Service Agreements
  Public Service Company of North Carolina, Inc.
  Page 2 of 2


         than the full Base Load Quantity,  and (b) the Gas Commodity Charge for
         such month shall be reduced by an amount  equal to $0.10 times the Base
         Load  Quantity  times  the  number  of days in  such  month;  provided,
         however, in the event Buyer fails to receive and purchase a quantity of
         gas at least  equal to the full Base Load  Quantity  on any day  during
         such  month,  (i) Buyer  shall not be  entitled  to such Gas  Commodity
         Charge  reduction  for that day and (ii)  Buyer  shall pay  Seller  the
         Market  Differential  plus $0.05  (for  administrative  and  incidental
         costs),  in both  cases  (i) and  (ii)  for  each Dt not  received  and
         purchased.  For purposes of this Amendment,  the "Market  Differential"
         shall  mean the  amount,  in no  event  less  than  zero,  obtained  by
         subtracting the Market Price from the Gas Commodity Rate.

5.   Demand  Ceiling FS Credit.  No later than three (3) business  days prior to
     the  first-of-the-month nomination  deadline  of TGPL,  Buyer may notify 
     Seller of its election to receive and purchase no more than a  specified
     quantity of Gas (in Dts) each day during such month that is less than 
     Buyer's Daily Sales  Entitlement  (such  specified  daily quantity the 
     "Demand Ceiling  Quantity").  In the event Buyer timely elects to receive
     and purchase not more than the Demand Ceiling  Quantity during a month, 
     (a) each day during such month Buyer shall  purchase  and receive a
     quantity of gas not more than the Demand Ceiling Quantity,  and (b) the Gas
     Commodity  Charge  for such month  shall be  reduced by an amount  equal to
     $0.10 times (the Daily Sales Entitlement minus the Demand Ceiling Quantity)
     times the number of days in such  month;  provided,  however,  in the event
     Buyer  receives a quantity  of gas more than the Demand  Ceiling
     Quantity on any day during such  month,  (i)Buyer  shall not be entitled to
     such Gas Commodity  Charge  reduction for that day and (ii) Buyer shall pay
     Seller the Market Price (in lieu of the Gas Commodity Rate) plus $0.05 (for
     administrative  and incidental  costs), in both cases (i) and (ii) for each
     Dt received in excess of the Demand Ceiling Quantity.
     
6.   Market Price. As used in this  Amendment,  the "Market Price" shall mean
     the higher of (i) the weighted average of the spot gas posted indices in 
     Inside F. E. R. C. 's Gas Market  Report,  the relevant first of the
     month   issue,   "Prices  of  Spot  Gas   delivered   to   Pipelines,"
     Transcontinental Gas Pipeline Corporation Zones 1, 2 and 3 fully telescoped
     in the same proportions as Buyer's  converted firm  transportation  service
     purchased  from TGPL,  or (ii) an amount equal to the sum of the  following
     (a), (b) and (c), to be calculated using price listings as published by Gas
     Daily as applicable to the day Buyer fails to receive and purchase at least
     the full Base Load  Quantity;  provided,  if such day  occurs on  Saturday,
     Sunday or any other day on which Gas Daily is not published,  the following
     (a), (b), and (c) shall be calculated  using the applicable  price listings
     in the nearest subsequent publication of Gas Daily.

(a)  (Under the heading  "Daily Price Survey," the highest price in the range
     of  prices   listed   under  the  heading   "Common"   for  the  section
     "South--Corpus Christi," delivery in "Transco Zl St.



















  Amendment to FS Service Agreements
  Public Service Company of North Carolina, Inc.
  Page 3 of 3

      30") multiplied by the percentage  applicable to such  delivery/receipt
      point as listed in Section 3.2 of TGPL's Rate Schedule FT (currently 17%);

         (b)  (Under the heading  "Daily Price Survey," the highest price in
              the range of prices listed under the heading  "Common" for the
              section "East-Houston-Katy," delivery in "Transco Z2 St. 45;")
              multiplied    by   the    percentage    applicable   to   such
              delivery/receipt point as listed in Section 3.2 of TGPL's Rate
              Schedule FT (currently 25 %); and

         (c)  (Under the heading  "Daily Price Survey," the highest price in
              the range of prices listed under the heading  "Common" for the
              section "Louisiana-Onshore South," delivery in "Transco Z3 St.
              50,  62,  65 ")  multiplied  by the  sum  of  the  percentages
              applicable  to  such  delivery/receipt  points  as  listed  in
              Section  3.2 of TGPL's Rate  Schedule  FT (such sum  currently
              58%).

7.       Buyer and Seller acknowledge and agree that the remedies and measure of
         damages  provided herein are reasonably  designed to compensate  Seller
         for actual  damages  in the event of a failure by Buyer to receive  and
         purchase at least the full Base Load Quantity, and are not individually
         or cumulatively a penalty.

8.      Except as otherwise  modified herein, the terms and conditions of the FS
        Agreements shall remain as originally written in full force and effect.


        ACCEPTED AND AGREED:      WILLIAMS ENERGY SERVICES COMPANY
                                  As Agent for
                                  TRANSCONTINENTAL GAS PIPE LINE
                                  CORPORATION

                                  By: /s/ H. Dean Jones, II
                                  H. Dean Jones, II
                                  Vice President
                                  Date: November 25, 1998


                                  PUBLIC SERVICE COMPANY OF
                                  NORTH CAROLINA.  INC.

                                  By: /s/ Franklin H. Yoho
                                  Name:  Franklin H. Yoho
                                  Title: Vice President-Marketing & Gas Supply
                                  Date:  November 20, 1998