POWER OF ATTORNEY

       For Executing Forms 3, 4 and 5, Form 144 and Schedules 13D and 13G

     Know all men by these presents that the undersigned hereby constitutes and
appoints Tracy A. McLauchlin and Mary K. Newman, signing singly, the
undersigned's true and lawful attorney-in-fact to:

     (1) execute for and on behalf of the undersigned (a) Forms 3, 4 and 5
         (including amendments thereto) in accordance with Section 16(a) of the
         Securities Exchange Act of 1934 and the rules thereunder, (b) Form 144
         and (c) Schedules 13D and 13G (including amendments thereto) in
         accordance with Sections 13(d) and 13(g) of the Securities Exchange Act
         of 1934 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 Form 3, 4 or 5, Form 144 of Schedule 13D or 13G (including
         amendments thereto) and timely file such Forms or Schedules with the
         Securities and Exchange Commission and any stock exchange, self-
         regulatory association or any other authority; and

     (3) take any other action of any type whatsoever in connection with
         the foregoing that, in the opinion of each such attorney-in-fact, may
         be of benefit to, in the best interest of, or legally required of the
         undersigned, it being understood that the documents executed by the
         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 the attorney-in-fact may approve in the
         attorney-in-fact's discretion.

     The undersigned hereby grants to each attorney-in-fact full power and
authority to do and perform all 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 the attorney-in-fact, or the attorneys-
in-fact substitute or substitutes, 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, and their
substitutes, in serving in such capacity at the request of the undersigned, are
not assuming (nor is IES Holdings, Inc. assuming) any of the undersigned's
responsibilities to comply with Section 16 of the Securities Exchange Act of
1934. The undersigned agrees that each such attorney-in-fact may rely entirely
on information furnished orally or in writing by the undersigned to the
attorney-in-fact.

     This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Forms 3, 4 and 5, Form 144 and
Schedules 13D and 13G (including amendments thereto) with respect to the
undersigned's holdings of and transactions in securities issued by IES Holdings,
Inc., unless earlier revoked by the undersigned in a signed writing delivered to
the foregoing attorneys-in-fact. This Power of Attorney does not revoke any
other power of attorney that the undersigned has previously granted.

     IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be
executed as of this 6th day of January, 2020.


                                        By: /s/ Gary S. Matthews
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                                        Name: Gary S. Matthews
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