<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>kirbypoa.txt
<DESCRIPTION>EX-24
<TEXT>
POWER OF ATTORNEY

Know all by these presents, that the
undersigned hereby makes, constitutes
and appoints each of Stephanie Zapata Moore,
Yuki Whitmire, Daniela Gutierrez
and Katherine Reilly, or either of
them acting individually, and
each of their successors in office and
designees, with full power of substitution,
the undersigned's true and lawful
attorney-in-fact to:

prepare, execute in the undersigned's
name and on the undersigned'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 (the "Exchange Act"), Rule 144 under the
Securities Act of 1933 ("Rule 144"), or any
rule or regulation of the SEC;

serve as an account administrator for the
undersigned's account in the SEC's enhanced
Electronic Data Gathering, Analysis, and
Retrieval system ("EDGAR Next"), which
includes, among other things, the power to:
(i) appoint and remove account administrators,
users, technical administrators and delegated
entities; (ii) submit, or cause a person or
entity so appointed to submit, filings through
the EDGAR Next system on behalf of the undersigned;
(iii) manage the undersigned's EDGAR access
codes; and (iv) modify and annually confirm the
information in the undersigned's EDGAR Next
account, and delegate authority to Vistra Corp.,
a Delaware corporation (the "Company"), or cause
the Company to accept a delegation of authority,
as a delegated entity for the undersigned's
EDGAR Next account;

execute for and on behalf of the undersigned,
in the undersigned's capacity as an officer
and/or director of the Company, Forms 3, 4, and 5,
and Forms 144, each including amendments thereto,
in accordance with Section 16(a) of the Securities
Exchange Act of 1934 and the rules and regulations
thereunder and Rule 144, respectively;

do and perform any and all acts for and on
behalf of the undersigned which may be
necessary or desirable to complete and
execute any such Form 3, 4, or 5, or Form 144,
complete and execute any amendment or
amendments thereto, and timely file such
form with the SEC and any stock exchange or
similar authority; and

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, the undersigned, it
being understood that the documents executed by
such attorney-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 attorney-in-fact
may approve in such attorney-in-fact's discretion.

The undersigned hereby grants to each 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 the undersigned
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. 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
of the Exchange Act or Rule 144.



This Power of Attorney shall remain in full
force and effect until the undersigned is no
longer required to file Forms 3, 4, 5 and 144
with respect to the undersigned's holdings of
and transactions in securities issued by the
Company, unless earlier (a) revoked by the
undersigned in a signed writing delivered to
the foregoing attorney-in-fact or (b)
superseded by a new power of attorney
regarding the purposes outlined herein at
a later date.



IN WITNESS WHEREOF, the undersigned has
caused this Power of Attorney to be
executed as of this 1st day of August, 2025.


/s/Carrie Kirby/
Signature

Carrie Kirby
Print Name
</TEXT>
</DOCUMENT>
