Zedillo Ernesto Form 4 Alcoa / ERNESTO ZEDILLO ownership change

ALCOA CORPORATION



POWER OF ATTORNEY



     KNOW ALL PERSONS BY THESE PRESENTS, that I, the undersigned director and/or officer of Alcoa

Corporation, a Delaware corporation (the Company), hereby constitute and appoint Jeffrey D. Heeter,

Marissa P. Earnest, Eryn F. Correa, Mary A. Vogel and any Assistant Secretary of the Company, and

each of them, my true and lawful attorneys-in-fact and agents, with full power to act, together or each

without the other, with full power of substitution and resubstitution, for me and in my name, place and

stead, in any and all capacities, to execute and file for and on behalf of the undersigned (i) any reports on

Forms 3, 4 and 5 (including any amendments thereto and any successors to such Forms) with respect to

ownership acquisition or disposition of securities of the Company that the undersigned may be required to

file with the U.S. Securities and Exchange Commission (the SEC) in accordance with Section 16(a) of the

Securities Exchange Act of 1934, as amended (the Exchange Act), and the rules promulgated

thereunder, (ii) any voluntary filings under Section 16(a) of the Exchange Act, (iii) to request electronic

filing codes from the SEC by filing the Form ID (including amendments thereto) and any other documents

necessary or appropriate to obtain codes and passwords enabling the undersigned to file such reports

electronically, (iv) any documents or reports that may be required under SEC Rule 144 to permit the

undersigned to sell Company common stock without registration under the Securities Act of 1933, as

amended (the Securities Act) in reliance on Rule 144 as amended from time to time, or (v) take any other

action of any type whatsoever in connection with the foregoing which, in the opinion of such attorneys-in-

fact, may be of benefit to, in the best interest of, or legally required by, the undersigned, it being

understood that the documents executed by such attorneys-in-fact on behalf of the undersigned pursuant

to this Power of Attorney shall be in such form and shall contain such terms and conditions as such

attorneys-in-fact may approve in such attorney-in-fact's or attorneys-in-fact's discretion.



      The undersigned acknowledges that the foregoing attorneys-in-fact, in serving in such capacity at the

request of the undersigned, are not assuming, nor is the Company assuming, any of the undersigned's

responsibilities to comply with Section 16(a) of the Exchange Act or the Securities Act.  The Company will

use all reasonable efforts to apprise the undersigned of applicable filing requirements for purposes of

Section 16(a) of the Exchange Act or the Securities Act.



     This Power of Attorney shall remain in full force and effect until the undersigned is no longer required

to file Forms 3, 4 and 5 with respect to the undersigned's holdings and transactions in securities issued by

the Company, unless earlier revoked by the undersigned in a signed writing delivered to the foregoing

attorneys-in-fact.  This Power of Attorney revokes and replaces any prior Power of Attorney executed by

the undersigned with respect to the ownership, acquisition or disposition of securities of the Company.





      IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be executed as of

this

     14th   day of      May   , 2018.









Signature:  /s/ Ernesto Zedillo







Printed Name:   Ernesto Zedillo

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