POWER OF ATTORNEY

      KNOW ALL BY THESE PRESENTS, that the undersigned hereby makes, constitutes
and appoints Charlotte MacVane and Nipul Patel, signing singly, the
undersigned's true and lawful attorneys-in-fact, with full power and authority
as hereinafter described on behalf of and in the name, place and stead of the
undersigned to:

      (i)   execute for and on behalf of the undersigned, in the undersigned's
            capacity as a director, director nominee, officer or beneficial
            owner of shares of common stock (the "Shares") of Array
            Technologies, Inc., a Delaware corporation (the "Company"), any
            Schedule 13D or Schedule 13G, and any amendments, supplements or
            exhibits thereto (including any joint filing agreements) required to
            be filed by the undersigned under Section 13 of the Securities
            Exchange Act of 1934, as amended, and the rules and regulations
            promulgated thereunder (the "Exchange Act"), and any Forms 3, 4, and
            5 and any amendments, supplements or exhibits thereto required to be
            filed by the undersigned under Section 16(a) of the Exchange Act;

     (ii)   do and perform any and all acts for and on behalf of the undersigned
            which may be necessary or desirable to complete and execute any such
            Schedule 13D, Schedule 13G, Form 3, 4, or 5 and timely file such
            forms with the United States Securities and Exchange Commission and
            any stock exchange on which the Shares are then listed; and

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

      The undersigned hereby grants to such attorneys-in-fact full power and
authority to do and perform any 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 such attorneys-in-fact's 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, in serving in such capacity at the
request of the undersigned, are not assuming, nor is the Company assuming, any
of the undersigned's responsibilities to comply with Section 13 and Section 16
of the Exchange Act.

      This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file reports or schedules under Section 13
or Section 16 of the Exchange Act with respect to the undersigned's holdings of
and transactions in securities issued by the Company, unless earlier revoked by
the undersigned in a signed writing delivered to the foregoing attorneys-in-
fact.

                                 *  *  *  *  *


      IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to
be executed as of this 14th day of October, 2020.

                                 /s/ Jason Lee
                                 ----------------------
                                 Name: Jason Lee
                                 Title: Vice President and Assistant Secretary