December 12, 2023

POWER OF ATTORNEY

KNOW ALL BY THESE PRESENTS, that the undersigned hereby
constitutes and appoints each of Brian E. Curci and Christine
A. Zoino, signing singly, the undersigned's true and lawful
attorney-in-fact to: (i) execute for and on behalf of the
undersigned, in the undersigned's capacity as an officer and/or
director and/or owner of greater than 10% of the outstanding
Common Stock of NRG Energy, Inc., a Delaware corporation (the
"Company"), Forms 3, 4, and 5 in accordance with Section 16(a) of
the Securities Exchange Act of 1934 and the rules thereunder;
(ii) 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 and timely file such form with
the United States Securities and Exchange Commission and any
stock exchange or similar authority, including the New York Stock
Exchange; and (iii) 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'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.  Each of 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 Securities
Exchange Act of 1934.

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 of and
transactions in securities issued by the Company, unless earlier
revoked by each of the undersigned in a signed writing delivered
to the foregoing attorneys-in-fact.

IN WITNESS WHEREOF, the undersigned have caused this Power of
Attorney to be executed as of date first written above.

Gerald Alfred Spencer
_________________
/s/ Gerald Alfred Spencer


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