Report of Foreign Issuer (6-k)

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16 UNDER

THE SECURITIES EXCHANGE ACT OF 1934

For the month of December, 2017

EMPRESA DISTRIBUIDORA Y COMERCIALIZADORA NORTE S.A. (EDENOR)

(DISTRIBUTION AND MARKETING COMPANY OF THE NORTH )

(Translation of Registrant's Name Into English)

Argentina

(Jurisdiction of incorporation or organization)

Av. del Libertador 6363,

12th Floor,

City of Buenos Aires (A1428ARG),

Tel: 54-11-4346-5000

(Address of principal executive offices)

(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 whether the registrant by furnishing the information contained in this form is also thereby furnishing the information to the Commission pursuant to 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): 82- .)

Buenos Aires, December 6 ^th, 2017

GAL Note 153/17

COMISIÓN NACIONAL DE VALORES

Argentine Securities and Exchange Commission

25 de Mayo 175

Issuers´ Sub-Management Office

BOLSA DE COMERCIO DE BUENOS AIRES

Argentine Stock Exchange

Sarmiento 299

Ref: Material Fact

Dear Sirs,

I hereby address you on behalf of Empresa Distribuidora y Comercializadora Norte S.A. (EDENOR) (the “Company”) in accordance with the regulations in force in order to inform the Resolution N°603/17 issued by the National Regulatory Entity for Electricity (ENRE) by which it approves Edenor’s new tariff schedule for consumptions occurred as from December 1 ^st 2017 pursuant to the new values fixed by the Secretariat of Energy for the seasonal reference price of electricity and the increase foreseen in 19% of the Distribution Added Value approved by the Integral Tarif Review on February 1 ^st 2017, in addition to the semi-annual adjustment of 11.6% in August 2017 differed to December 2017. The above mentioned together with new electricity prices fixed caused the tariff final value to increase, in the case of T1 category users a 66,3% on average, in the T2 category a 58,1% on average, in the T3 category 48.5% on average; and in the Public lighting category a 63,4% on average.

Yours faithfully,

Carlos Ariosa

Attorney-in-fact

Empresa Distribuidora y Comercializadora Norte Sociedad Anónima (EDENOR S.A.)

Avda. del Libertador 6363 – Buenos Aires, C1428ARG – Argentina. Tel.: 4346-5400 Fax: 4346-5327

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.