Exhibit 12.1  CFO Certification  I, Leandro Carlos Montero, certify that: 1.         I have reviewed this annual report on Form 20-F of
Empresa Distribuidora y Comercializadora Norte S.A.; 2.         Based on my knowledge, this report does not contain any
untrue statement of a material fact or omit to state a material fact necessary
to make the statements made, in light of the circumstances under which such
statements were made, not misleading with respect to the period covered by this
report; 3.         Based on my knowledge, the financial statements, and
other financial information included in this report, fairly present in all
material respects the financial condition, results of operations and cash flows
of the company as of, and for, the periods presented in this report; 4.         The company’s other certifying officer(s) and I are
responsible for establishing and maintaining disclosure controls and procedures
(as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control
over financial reporting (as defined in Exchange Act Rules 13a-15(f) and
15d-15(f)) for the company and have: (a) Designed such disclosure controls and
procedures, or caused such disclosure controls and procedures to be designed
under our supervision, to ensure that material information relating to the
company, including its consolidated subsidiaries, is made known to us by others
within those entities, particularly during the period in which this report is
being prepared; (b) Designed such internal control over
financial reporting, or caused such internal control over financial reporting
to be designed under our supervision, to provide reasonable assurance regarding
the reliability of financial reporting and the preparation of financial
statements for external purposes in accordance with generally accepted
accounting principles; (c) Evaluated the effectiveness of the
company’s disclosure controls and procedures and presented in this report our
conclusions about the effectiveness of the disclosure controls and procedures,
as of the end of the period covered by this report based on such evaluation;
and (d) Disclosed in this report any change in
the company’s internal control over financial reporting that occurred during
the period covered by the annual report that has materially affected, or is
reasonably likely to materially affect, the company’s internal control over
financial reporting; and


---



5.         The company’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the company’s auditors and the audit committee of the company’s board of directors (or persons performing the equivalent functions): (a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the company’s ability to record, process, summarize and report financial information; and (b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the company’s internal control over financial reporting.   Date: April 28, 2017.  /s/ Leandro Carlos Montero Leandro Carlos Montero Chief Financial Officer


2