On April 5, 2023, ESGEN Acquisition Corporation (the “Company”) issued an unsecured promissory note (the “Note”) in the principal amount of up to $1,500,000 to ESGEN LLC, the Company's sponsor (“Sponsor”), which may be drawn down by the Company from time to time prior to the consummation of the Company's initial merger, share exchange, asset acquisition, stock purchase, recapitalization, reorganization or other similar business combination with one or more businesses or entities (the “Business Combination”). The Note does not bear interest, matures on the date of consummation the Business Combination and is subject to customary events of default. The Note will be repaid only to the extent that the Company has funds available to it outside of its trust account established in connection with its initial public offering.