Exhibit 10-A-33.1


Transco
Gas Marketing Company




September 13, 1993



Public Service Company of North Carolina, Inc.
800 Cox Road
Gastonia, North Carolina 28053

Attention: Vice President, Gas Supply and Transportation

Re:  Amendment to that certain "AMENDED AND RESTATED GAS SALES AGREEMENT" by and
between Transco Energy Marketing Company,  as Seller, and Public Service Company
of North Carolina, Incorporated, as Buyer, dated November 1, 1990

Gentlemen:

Pursuant to our previous discussions,  please accept this letter as amending the
above-named agreement as follows:

1.    Effective  November 1, 1993 - Article I, Section  l.Ol(g) shall be amended
      to reduce the Daily Contract  Maximum from twenty thousand  (20,000) dt of
      gas per day to ten thousand (10,000) dt of gas per day; and,

2.    Effective November 1, 1992, Article VIII, Section 8.01(a) shall be amended
      to reduce the eighteen cents ($.18) reference therein to ten cents ($.10).

All other terms and conditions of the above-named agreement shall remain in full
force and effect.






Public Service Company of North Carolina, Inc.
September 13, 1993
Page Two

If the foregoing  represents your understanding of the transaction  contemplated
by the  parties  hereto,  please so indicate  by  executing  both copies of this
letter and returning one (1) to the undersigned.

Sincerely,

TRANSCO ENERGY MARKETING COMPANY

/s/H. Dean Jones II

H. Dean Jones II
Senior Vice President

HDJ/MJS/dms/9300 1

Agreed to and Accepted this the 20 day of Sept., 1993.

PUBLIC SERVICE COMPANY OF NORTH CAROLINA, INCORPORATED

By:       /s/Franklin H. Yoho

Title:    Franklin H. Yoho
          Vice President
          Corporate Development & Gas Supply