Exhibit 24 - Power of Attorney

LIMITED POWER OF ATTORNEY ? SECURITIES LAW COMPLIANCE


The undersigned, as an officer, director, or employee of EQT Midstream
Services, LLC, the general partner of EQT Midstream Partners, LP,
or its subsidiaries or affiliates (the "Company"), hereby constitutes
Jonathan M. Lushko, Tobin M. Nelson, Mary C. Krejsa and Melissa E. Lauteri
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 London, England as of
the date set forth below.


/s/ Stephen A. Thorington
Signature
Stephen A. Thorington                     .
Type or Print Name

Date: February 27, 2018