Athena Technology Acquisition Corp. and Heliogen, Inc., a Leading Provider of AI-Enabled Concentrated Solar Power, Announce Filing of Definitive Proxy Statement and the December 28, 2021 Special Meeting of Stockholders to Approve Business Combination - Seite 2

ATHN expects to provide stockholders with additional information on how stockholders may vote their shares on its website in the coming days, and ATHN expects to publish a subsequent press release once the website is live.

Cautionary Note Regarding Forward-Looking Statements

This communication shall not constitute an offer to sell or the solicitation of an offer to buy any securities, nor shall there be any sale of securities in any states or jurisdictions in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction.

Additional Information and Where to Find It

In connection with the proposed business combination, Athena Technology Acquisition Corp. (“Athena”) has filed with the Securities and Exchange Commission (“SEC”) a registration statement on Form S-4 that has been declared effective by the SEC, which includes a prospectus of Athena with respect to the securities to be issued in connection with the business combination with Heliogen, Inc. (“Heliogen”) and a definitive proxy statement of Athena with respect to the Special Meeting. The combined proxy statement/prospectus relating to the proposed business combination will be mailed to Athena’s stockholders on or about December 6, 2021. This press release does not contain all the information that should be considered concerning the proposed business combination and is not intended to form the basis of any investment decision or any other decision in respect of the business combination. The proposed business combination and related transactions will be submitted to stockholders of Athena for their consideration. Athena’s stockholders and other interested persons are advised to read the definitive proxy statement/prospectus and other documents filed in connection with Athena’s solicitation of proxies for its special meeting of stockholders to be held to approve, among other things, the proposed business combination and related transactions, because these materials contain important information about Heliogen, Athena and the proposed business combination and related transactions. The definitive proxy statement/prospectus and other relevant materials for the proposed business combination will be mailed to stockholders of Athena as of November 23, 2021. Stockholders may also obtain a copy of the preliminary or definitive proxy statement/prospectus, once available, as well as other documents filed with the SEC by Athena, without charge, at the SEC’s website located at www.sec.gov or by directing a request to Phyllis Newhouse, President and Chief Executive Officer, Athena Technology Acquisition Corp., 125 Townpark Drive, Suite 300, Kennesaw, GA 30144, or by telephone at [phone].