POWER OF ATTORNEY

     KNOW ALL BY THESE PRESENTS, THAT I, Felipe de Jesus Calderon Hinojosa, do
hereby appoint Scott R. Mahoney, Elizabeth Riotte and Susan Johnston, or either
of them, my true and lawful attorney-in-fact to:

     (1)  prepare, execute in my name and on my behalf, and submit to the U.S.
          Securities and Exchange Commission (the "SEC") a Form ID, including
          amendments thereto, and any other documents necessary or appropriate
          to obtain codes and passwords enabling me to make electronic filings
          with the SEC of reports required by Section 16(a) of the Securities
          Exchange Act of 1934 or any rule or regulation of the SEC;

     (2)  execute for me and on my behalf, in my capacity as an officer and/or
          director of Avangrid, Inc. (the "Company"), Forms 3, 4, and 5 in
          accordance with Section 16(a) of the Securities Exchange Act of 1934,
          as amended, and the rules thereunder;

     (3)  do and perform any and all acts for me and on my behalf which may be
          necessary or desirable to complete and execute any such Form 3, 4, or
          5, complete and execute any amendment or amendments thereto, and
          timely file such form with the SEC and any stock exchange or similar
          authority; and

     (4)  take any other action of any type whatsoever in connection with the
          foregoing which, in the opinion of such attorney-in-fact, may be of
          benefit to, in the best interest of, or legally required by, me, it
          being understood that the documents executed by such attorney-in-fact
          on my behalf pursuant to this Power of Attorney shall be in such form
          and shall contain such terms and conditions as such attorney-in-fact
          may approve in such attorney-in-fact's discretion.

     I hereby grant to such attorney-in-fact full power and authority to do and
perform any and every act and thing whatsoever requisite, necessary, or proper
to be done in the exercise of any of the rights and powers herein granted, as
fully to all intents and purposes as I might or could do if personally present,
with full power of substitution or revocation, hereby ratifying and confirming
all that such attorney-in-fact, or such attorney-in-fact's substitute or
substitutes, shall lawfully do or cause to be done by virtue of this Power of
Attorney and the rights and powers herein granted. I acknowledge that the
foregoing attorney-in-fact, in serving in such capacity at my request, is not
assuming, nor is the Company assuming, any of my responsibilities to comply with
Section 16 of the Securities Exchange Act of 1934.

     This Power of Attorney shall remain in full force and effect until I am no
longer required to file Forms 3, 4, and 5 with respect to my holdings of and
transactions in securities issued by the Company, unless earlier revoked by me
in a signed writing delivered to the foregoing attorney-in-fact.

     IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be
executed as of this 14th day of July, 2016.

                                        /s/ Felipe de Jesus Calderon Hinojosa
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                                        Signature

                                        Felipe de Jesus Calderon Hinojosa
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