EXHIBIT 99.1

PRELIMINARY PROXY CARD – SUBJECT TO COMPLETION

ROTH CH ACQUISITION I CO.

THIS PROXY IS SOLICITED BY THE BOARD OF DIRECTORS

FOR THE SPECIAL MEETING OF STOCKHOLDERS TO BE HELD ON, 2021

The undersigned, revoking any previous proxies relating to these shares, hereby acknowledges receipt of the Notice and Proxy Statement, dated                   , 2021, in connection with the Special Meeting to be held at                      Eastern Standard Time on                      , 2021 virtually by means of the internet at http://www.cstproxy.com/rothacquisitionsm.2020, and hereby appoints John Lipman and Aaron Gurewitz, and each of them (with full power to act alone), the attorneys and proxies of the undersigned, with power of substitution to each, to vote all shares of the common stock, of Roth CH Acquisition I Co. (the “Corporation”) registered in the name provided, which the undersigned is entitled to vote at the Special Meeting of Stockholders, and at any adjournments thereof, with all the powers the undersigned would have if personally present. Without limiting the general authorization hereby given, said proxies are, and each of them is, instructed to vote or act as follows on the proposals set forth in this Proxy Statement.

TO ATTEND THE VIRTUAL MEETING, YOU MUST HAVE THE CONTROL NUMBER THAT IS LOCATED ON THE REVERSE SIDE OF THIS FORM.

THIS PROXY, WHEN EXECUTED, WILL BE VOTED IN THE MANNER DIRECTED HEREIN. IF NO DIRECTION IS MADE, THIS PROXY WILL BE VOTED “FOR” THE BUSINESS COMBINATION AND RELATED PROPOSALS CONSISTING OF PROPOSALS 1, 2, 3 AND 4.

IF YOUR SHARES ARE HELD IN AN ACCOUNT AT A BROKERAGE FIRM OR BANK, YOU MUST INSTRUCT YOUR BROKER OR BANK ON HOW TO VOTE YOUR SHARES. IF YOU DO NOT PROVIDE SUCH INSTRUCTIONS, YOUR SHARES WILL NOT BE VOTED ON ANY OF THE PROPOSALS.

THE BOARD OF DIRECTORS RECOMMENDS A VOTE “FOR” PROPOSALS 1, 2, 3 AND 4.

IMPORTANT NOTICE REGARDING THE AVAILABILITY OF PROXY MATERIALS FOR THE SPECIAL MEETING: THE NOTICE AND PROXY STATEMENT ARE AVAILABLE AT https://www.cstproxy.com/rothchacquisition/sm2020

(CONTINUED AND TO BE MARKED, DATED AND SIGNED ON THE REVERSE SIDE)