Exhibit 24

POWER OF ATTORNEY

Know all by these presents, that the undersigned hereby makes, constitutes and
appoints each of Michael W. Reville, Kenneth E. Webster, Meghan A. Corcoran
and James P. Baetzhold, or any of them acting singly, and with full power of
substitution and re-substitution, the undersigned's true and lawful
attorney-in-fact (each of such persons and their substitutes being referred
to herein as the "Attorney-in-Fact"), with full power to act for the undersigned
and in the undersigned's name, place and stead, in any and all capacities, to:

1.  Prepare, execute, and submit to the Securities and Exchange Commission
("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 or considered by
the Attorney-in-Fact to be advisable under Section 13 or Section 16 of the
Securities Exchange Act of 1934 (the "Exchange Act") or any rule or regulation
of the SEC;

2.  Prepare, execute and submit to the SEC, National Fuel Gas Company (the
"Company"), and/or any national securities exchange on which the Company's
securities are listed any and all reports (including any amendments thereto)
the undersigned is required to file with the SEC, or which the Attorney-in-Fact
considers it advisable to file with the SEC, under Section 13 or Section 16
of the Exchange Act or any rule or regulation thereunder, or under Rule 144
under the Securities Act of 1933 ("Rule 144"), with respect to any security
of the Company, including Forms 3, 4 and 5, Schedules 13D and 13G,
and Forms 144; and

3.  Obtain, as the undersigned's representative and on the undersigned's behalf,
information regarding transactions in the Company's equity securities from any
third party, including the Company and any brokers, dealers, employee benefit
plan administrators and trustees, and the undersigned hereby authorizes any
such third party to release any such information to the Attorney-in-Fact.

The undersigned acknowledges that:

a) This Power of Attorney authorizes, but does not require, the Attorney-in-Fact
to act in his or her discretion on information provided to such Attorney-in-Fact
without independent verification of such information;

b) Any documents prepared or executed by the Attorney-in-Fact on behalf of
the undersigned pursuant to this Power of Attorney will be in such form
and will contain such information as the Attorney-in-Fact, in his or her
discretion, deems necessary or desirable;

c) Neither the Company nor the Attorney-in-Fact assumes any liability for
the undersigned's responsibility to comply with the requirements of Section 13
or Section 16 of the Exchange Act or Rule 144, any liability of the undersigned
for any failure to comply with such requirements, or any liability of
the undersigned for disgorgement of profits under Section 16(b) of the
Exchange Act; and

d) This Power of Attorney does not relieve the undersigned from responsibility
for compliance with the undersigned's obligations under Section 13 or Section 16
of the Exchange Act, including, without limitation, the reporting requirements
under Section 13 or Section 16 of the Exchange Act.

The undersigned hereby grants to the Attorney-in-Fact full power and authority
to do and perform each and every act and thing requisite, necessary or advisable
to be done in connection with the foregoing, as fully, to all intents and
purposes, as the undersigned might or could do in person, hereby ratifying
and confirming all that the Attorney-in-Fact, or his or her substitute or
substitutes, shall lawfully do or cause to be done by authority of this
Power of Attorney.

This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Forms 4 or 5 or Schedules 13D
or 13G or Forms 144 with respect to the undersigned's holdings of and
transactions in securities of the Company, unless earlier revoked by the
undersigned in a signed writing delivered to the Attorney-in-Fact.
This Power of Attorney revokes all previous powers of attorney with
respect to the subject matter of this Power of Attorney.

IN WITNESS WHEREOF, the undersigned has executed this
Power of Attorney as of March 24, 2023.

Signature: /s/ Timothy J. Silverstein
Name: Timothy J. Silverstein