This Confirming Statement ("Statement") confirms that the undersigned, Stephanie
Zapata Moore, pursuant to her power and authority in her role as
attorney-in-fact for Hilary E. Ackermann ("Reporting Person") granted by that
certain Power of Attorney entered into as of May 21, 2019 ("Power of Attorney"),
hereby authorizes, directs and designates Yuki Whitmire ("Designee"), acting
singly, to: (1) prepare, execute in the Reporting Person's name and on the
Reporting Person's 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 the
undersigned to make electronic filings with the SEC of reports required by
Section 16(a) of the Securities Exchange Act of 1934 ("Exchange Act") or any
rule or regulation of the SEC; (2) execute for and on behalf of the Reporting
Person, in the Reporting Person's capacity as an officer and/or director of
Vistra Corp. (the "Company"), Forms 4 and 5 in accordance with Section 16(a) of
the Exchange Act and the rules thereunder; (3) do and perform any and all acts
for and on behalf of the Reporting Person which may be necessary or desirable to
complete and execute any such Form 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 the
Designee, may be of, benefit to, in the best interest of, or legally required
by, the Reporting Person, it being understood that the documents executed by the
Designee on behalf of the Reporting Person pursuant to this Statement shall be
in such form and shall contain such terms and conditions as the Designee may
approve in the Designee's discretion.

The undersigned, pursuant to her power and authority in her role as
attorney-in-fact for the Reporting Person, hereby grants to the Designee full
power and authority to do and perform any and every act and thing whatsoever
requisite, necessary, or property to be done in the exercise of any of the
rights and powers granted under this Statement, as fully to all intents and
purposes as the Reporting Person might or that the Designee, or the Designee's
substitute or substitutes, shall lawfully do or cause to be done by virtue of
this Statement and the rights and powers herein granted. On behalf of the
Reporting Person, the undersigned acknowledges that the foregoing Designee, in
serving in such capacity on behalf of the Reporting Person, is not assuming, nor
is the Company assuming, any of the Reporting Person's responsibilities to
comply with Section 16 of the Exchange Act.

The authority of the Designee under this Statement shall continue until the
Reporting Person is no longer required to file Forms 4 and 5 with respect to the
Reporting Person's holdings of and/or transactions in securities of the Company,
unless earlier revoked by the Reporting Person, or any attorney-in-fact, in a
signed writing delivered to the Designee.

IN WITNESS WHEREOF, the undersigned has caused this Statement to be executed as
of this 4th day of May, 2022.

 	By: /s/ Stephanie Zapata Moore, as attorney-in-fact for Hilary E. Ackermann

 	Name: Stephanie Zapata Moore