Report of Foreign Issuer Pursuant to Rule 13a-16 or 15d-16 (6-k)

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

_____________

FORM 6-K

Report of Foreign Issuer

Pursuant to Rule 13a-16 or 15d-16 of

the Securities and Exchange Act of 1934

For May 1, 2023

Commission file number: 1-13.396

Transportadora de Gas del Sur S.A.

Don Bosco 3672, Fifth Floor

1206 Capital Federal

Argentina

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F  X  Form 40-F   

Indicate by check mark if registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): __

Indicate by check mark if registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): __

Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to the Rule 12g3-2(b) under the Securities Exchange Act of 1934.

Yes   No X  

If "Yes" is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b):

City of Buenos Aires, May 1, 2023.

DAL N° 371/23

Messrs.

Comisión Nacional de Valores (Argentine Securities and Exchange Commission)

Bolsas y Mercados Argentinos S.A. (Argentine Stock Exchanges and Markets)

Bolsa de Comercio de Buenos Aires (Buenos Aires Stock Exchange)

Gerencia Técnica y de Valores Negociables (Technical and Negotiable Securities Management)

Mercado Abierto Electrónico S.A. (Open Electronic Market)

Re.: Material fact. Tariff increase.

 Sirs,

I am writing to you in my capacity as Head of Market Relations of Transportadora de Gas del Sur S.A. (“tgs”), in order to report that pursuant to the provisions of Law no. 27,541 Decree no. 1020/20 and Decree no. 815/2022; tgs, the Ministry of Economy and the Gas Regulatory National Entity (ENARGAS), on April 24^th, 2023, entered into an amendment to the renegotiation transitory agreement called “Renegotiation Transitory Amendment Agreement. Transition Tariff Scheme: Transitory Adjustment on the Natural Gas Transportation Tariff” (the “Addendum”) which sets for an adjustment of 95% on the natural gas transportation tariffs.

It is worth pointing out that the Addendum was in force on April 29, 2023, as of the publication in the Argentine Official Gazette of Decree no. 250/2023 by which the National Executive Branch ratified the mentioned Addendum.

Yours sincerely,

Hernán Diego Flores Gómez

Head of Market Relations

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Transportadora de Gas del Sur S.A.

By:	/s/Alejandro M. Basso
Name:		Alejandro M. Basso
Title:		Chief Financial Officer and Services Vice President

By:	/s/Hernán D. Flores Gómez
Name:		Hernán Diego Flores Gómez
Title:		Legal Affairs Vice President

Date: May 1, 2023.