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 Tobin M. Nelson, Joseph D?Amico,
Nathaniel D. DeRose, Lisa M. Lind and Kelly Fritz 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/ Stephen M. Moore
Signature

Stephen M. Moore
Type or Print Name

Date:  April 4, 2019