Exhibit 23.1

INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM’S CONSENT

We consent to the inclusion in this Registration Statement of Roth CH Acquisition I Co. Parent Corp. (the “Registrant”) on Form S-4 of our report dated February 14, 2020 with respect to our audit of the financial statements of Roth CH Acquisition I Co. (the “Company”) as of December 31, 2019 and for the period from February 13, 2019 (inception) through December 31, 2019, which includes an explanatory paragraph as to the Company’s ability to continue as a going concern, which report appears in the proxy statement/prospectus, which is part of this Registration Statement. We also consent to the reference to our Firm under the heading “Experts” in such proxy statement/prospectus.

/s/ Marcum llp

New York, NY

November 20, 2020