EOCA Endesa Americas S.A. American Depositary Share (Each Representing 30 Shares of )

SCHEDULE 13D/A

Explanatory Note

This Amendment No. 3 to Schedule 13D (this “ Amendment ”) amends and supplements the Statement on Schedule 13D originally filed by Enel S.p.A. (“ Enel ”), an Italian societá per azioni ; Enel Iberoamérica, S.R.L. (“ EIA ”), a Spanish sociedad de responsibilidad limitada ; Enel Latinoamérica, S.A. (“ ELA ”), a Spanish sociedad anónima ; and Enel Américas S.A., a Chilean sociedad anónima , formerly named Enersis Américas S.A. (“ Enel Américas ”) (collectively, the “ Reporting Persons ”) with the United States Securities and Exchange Commission (the “ SEC ”) on August 12, 2016 (the “ Schedule 13D ”) with respect to the shares of Common Stock, no par value (the “ Common Stock ”), of Endesa Américas S.A., a Chilean sociedad anónima (“ Endesa Américas ” or the “ Issuer ”), and American Depositary Shares (“ ADSs ”) of Endesa Américas, each representing 30 shares of Common Stock of Endesa Américas, as amended and supplemented by the joint Schedule TO and Schedule 13D amendments filed with the SEC on September 2, 2016 and September 14, 2016.

Except as set forth below, all previous Items are unchanged.

Item 3. Source and Amount of Funds or Other Consideration.

Item 3 of Schedule 13D is amended and supplemented by adding the following:

Item 4 of this Amendment is incorporated herein by reference.

Item 4 of Schedule 13D is amended and supplemented by adding the following:

The previously disclosed merger of Endesa Américas and Chilectra Américas S.A. (“ Chilectra Américas ”) with and into Enel Américas (the “ Merger ”), which was approved by the shareholders of Enel Américas, Endesa Américas and Chilectra Américas on September 28, 2016, became effective on December 1, 2016. As a result of the effectiveness of the Merger, Endesa Américas and Chilectra Américas ceased to exist as separate corporate entities and Enel Américas continues as the surviving company. In connection with the Merger, holders of Endesa Américas shares and ADSs (other than Enel Américas) will receive 2.8 shares of Enel Américas for each Endesa Américas share and 1.68 ADSs of Enel Américas for each Endesa Américas ADS, respectively. The holders of Chilectra Américas (other than Enel Américas) will receive 4.0 shares of Enel Américas for each Chilectra Américas share. In addition, on November 9, 2016, the Issuer purchased 3,599,954 shares of Common Stock from stockholders of the Issuer that exercised their statutory merger dissenters’ withdrawal rights in connection with Merger. Such purchase was made using the Issuer’s cash on hand.

In connection with the effectiveness of the Merger, the Issuer notified the New York Stock Exchange (the “ NYSE ”) of the effectiveness of the Merger and requested that trading in the Endesa Américas ADSs be suspended and that the Endesa Américas ADSs be withdrawn from listing on the NYSE. On December 1, 2016, the NYSE filed a notification of removal from listing on Form 25 with the SEC with respect to the Endesa Américas ADSs to report the delisting of the Endesa Américas ADSs from the NYSE and the suspension of trading of the Endesa Américas ADSs on the NYSE as of December 1, 2016.

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Enel Américas, as successor to the Issuer, intends to file with the SEC a notice of termination on Form 15 with respect to the Endesa Américas ADSs, for the deregistration of the Endesa Américas ADSs under the Securities Exchange Act of 1934, as amended (the “ Exchange Act ”), and the termination of the reporting obligations of the Issuer with respect to the Endesa Américas ADSs under Sections 13(a) and 15(d) of the Exchange Act.

Item 5. Interest in Securities of the Issuer .

Item 5 of Schedule 13D is amended and restated in its entirety as follows:

(a) See Items 11 and 13 on pages 2, 3, 4 and 5 of this Schedule 13D.

(b) See Items 7, 9 and 11 on pages 2, 3, 4 and 5 of this Schedule 13D.

(c) Except as described in this Amendment, there have been no transactions in shares of Common Stock of Endesa Américas or any securities directly or indirectly convertible into or exchangeable for shares of Common Stock of Endesa Américas, by the Reporting Persons, since the date that is 60 days prior to the date of this Amendment.

(d) Not applicable.

(e) As of December 1, 2016, as a result of the Merger, the Reporting Persons cased to be the beneficial owner of more than 5% of the Common Stock of Endesa Américas.

Item 7. Material to be Filed as Exhibits .

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SIGNATURE

After reasonable inquiry and to the best of their knowledge and belief, the undersigned hereby certify that the information set forth in this statement is true, complete and correct.