Exhibit 99.1 5,175,000 COMMON SHARES ELECTROVAYA INC. UNDERWRITING AGREEMENT December 17, 2024 Roth Capital Partners, LLC As the Representative of the Several underwriters, if any, named in Schedule I hereto c/o Roth Capital Partners, LLC 888 San Clemente Dr. Newport Beach, CA 92660 Ladies and Gentlemen: The undersigned, Electrovaya Inc., a corporation existing under the laws of the Province of Ontario, Canada (the "Company"), hereby confirms its agreement (this "Agreement") with the several underwriters (s ...