POWER OF ATTORNEY

Know all persons by these present that the undersigned hereby constitutes
and appoints each of Mary M. Swann and Daniel M. Dunlap the undersigned's
true and lawful attorney in fact to:

(1)  execute for and on behalf of the undersigned, in the undersigned's
capacity as an officer, employee and/or director of FirstEnergy Corp.
and/or any of its subsidiaries and affiliates (referred to as the ?Company?),
as applicable, Forms 3, 4 and 5 in accordance with Section 16(a) of the
Securities Exchange Act of 1934, as amended (?Section 16?) and Form 144
(?Form 144?) pursuant to Rule 144 under the Securities Act of 1933
(?Rule 144?) and the rules thereunder;

(2)  do and perform any and all acts for and on behalf of the undersigned
that may be necessary or desirable to complete and execute any such
Forms 3, 4, 5 or 144 and file such form with the United States
Securities and Exchange Commission and any stock exchange or similar
authority; and

(3)  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 reasonable 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 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 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 revoked by the undersigned in a
signed writing delivered to the foregoing attorneys in fact.
Additionally, this Power of Attorney revokes any and all
previous Power of Attorney forms for this same purpose which
was entered into by the undersigned.

		This Power of Attorney shall be governed by
and construed in accordance with the law of the State of
Ohio, regardless of the law that might be applied under
principles of conflict of laws.

The undersigned has caused this Power of Attorney to be executed
as of this 25th day of April, 2023.

/s/Brian X. Tierney

State of New York)
		)  ss:
County of Westchester)


The foregoing Power of Attorney was acknowledged before me this
25th day of April, 2023, by Brian X. Tierney.


/s/Gina Santanastasio
        Gina Santanastasio, Notary Public
          State Wide Jurisdiction, New York
My Commission Expires Oct. 13, 2023