Exhibit 24 - Power of Attorney

LIMITED POWER OF ATTORNEY ? SECURITIES LAW COMPLIANCE


            The undersigned, as an officer, director, or employee of
Equitrans Midstream Corporation or its subsidiaries or affiliates
(the ?Company?), hereby constitutes Nathaniel D. DeRose, Joseph F. D?Amico,
Mary Krejsa, Lisa M. Lind and Laetitia Lukusa or any one of them the
undersigned?s true and lawful attorney-in-fact and agent to complete and
execute such Form ID Uniform Applications for Access Codes to File On Edgar,
Forms 144, Forms 3, 4 and 5, Schedules 13D and 13G and other forms and schedules
as any attorney shall in his or her discretion determine to be required or
advisable pursuant to Rule 144 promulgated under the Securities Act of 1933
(as amended), Sections 13 and 16 of the Securities Exchange Act of 1934
(as amended) and the rules and regulations promulgated thereunder, or any
successor laws and regulations, as a consequence of the undersigned?s
ownership, acquisition, or disposition of securities of the Company, and
to do all acts necessary in order to file such forms with the Securities
and Exchange Commission, any securities exchange or national association,
the Company and such other person or agency as the attorney shall deem
appropriate.  The undersigned hereby ratifies and confirms all that
said attorneys-in-fact and agents shall do or cause to be done by virtue
hereof.

            This Limited Power of Attorney shall remain in effect until the
undersigned is no longer required to make filings pursuant to Rule 144
promulgated under the Securities Act of 1933 (as amended), Sections 13 and
16 of the Securities Exchange Act of 1934 (as amended) and the rules and
regulations promulgated thereunder, or any successor laws and regulations,
unless earlier revoked by the undersigned in a signed writing delivered to
the foregoing attorneys-in-fact.

            This Limited Power of Attorney is executed in Pittsburgh,
Pennsylvania as of the date set forth below.


  /s/ Justin S. Macken
Signature

       Justin S. Macken
Type or Print Name

Date:	12/12/23